Staging
v0.5.0
v0.5.0
https://github.com/python/cpython
Tip revision: 1ad37bb508b990d73a76fdbeae9cb5aeadd0b4b0 authored by cvs2svn on 23 March 2001, 20:24:07 UTC
This commit was manufactured by cvs2svn to create tag 'r21b2'.
This commit was manufactured by cvs2svn to create tag 'r21b2'.
Tip revision: 1ad37bb
pydoc.py
#!/usr/bin/env python
"""Generate Python documentation in HTML or text for interactive use.
In the Python interpreter, do "from pydoc import help" to provide online
help. Calling help(thing) on a Python object documents the object.
Or, at the shell command line outside of Python:
Run "pydoc <name>" to show documentation on something. <name> may be
the name of a function, module, package, or a dotted reference to a
class or function within a module or module in a package. If the
argument contains a path segment delimiter (e.g. slash on Unix,
backslash on Windows) it is treated as the path to a Python source file.
Run "pydoc -k <keyword>" to search for a keyword in the synopsis lines
of all available modules.
Run "pydoc -p <port>" to start an HTTP server on a given port on the
local machine to generate documentation web pages.
For platforms without a command line, "pydoc -g" starts the HTTP server
and also pops up a little window for controlling it.
Run "pydoc -w <name>" to write out the HTML documentation for a module
to a file named "<name>.html".
"""
__author__ = "Ka-Ping Yee <ping@lfw.org>"
__date__ = "26 February 2001"
__version__ = "$Revision$"
__credits__ = """Guido van Rossum, for an excellent programming language.
Tommy Burnette, the original creator of manpy.
Paul Prescod, for all his work on onlinehelp.
Richard Chamberlain, for the first implementation of textdoc.
Mynd you, m矘se bites Kan be pretty nasti..."""
# Note: this module is designed to deploy instantly and run under any
# version of Python from 1.5 and up. That's why it's a single file and
# some 2.0 features (like string methods) are conspicuously avoided.
import sys, imp, os, stat, re, types, inspect
from repr import Repr
from string import expandtabs, find, join, lower, split, strip, rfind, rstrip
# --------------------------------------------------------- common routines
def synopsis(filename, cache={}):
"""Get the one-line summary out of a module file."""
mtime = os.stat(filename)[stat.ST_MTIME]
lastupdate, result = cache.get(filename, (0, None))
# XXX what if ext is 'rb' type in imp_getsuffixes?
if lastupdate < mtime:
file = open(filename)
line = file.readline()
while line[:1] == '#' or strip(line) == '':
line = file.readline()
if not line: break
if line[-2:] == '\\\n':
line = line[:-2] + file.readline()
line = strip(line)
if line[:3] == '"""':
line = line[3:]
while strip(line) == '':
line = file.readline()
if not line: break
result = strip(split(line, '"""')[0])
else: result = None
file.close()
cache[filename] = (mtime, result)
return result
def pathdirs():
"""Convert sys.path into a list of absolute, existing, unique paths."""
dirs = []
normdirs = []
for dir in sys.path:
dir = os.path.abspath(dir or '.')
normdir = os.path.normcase(dir)
if normdir not in normdirs and os.path.isdir(dir):
dirs.append(dir)
normdirs.append(normdir)
return dirs
def getdoc(object):
"""Get the doc string or comments for an object."""
result = inspect.getdoc(object) or inspect.getcomments(object)
return result and re.sub('^ *\n', '', rstrip(result)) or ''
def classname(object, modname):
"""Get a class name and qualify it with a module name if necessary."""
name = object.__name__
if object.__module__ != modname:
name = object.__module__ + '.' + name
return name
def isconstant(object):
"""Check if an object is of a type that probably means it's a constant."""
return type(object) in [
types.FloatType, types.IntType, types.ListType, types.LongType,
types.StringType, types.TupleType, types.TypeType,
hasattr(types, 'UnicodeType') and types.UnicodeType or 0]
def replace(text, *pairs):
"""Do a series of global replacements on a string."""
for old, new in pairs:
text = join(split(text, old), new)
return text
def cram(text, maxlen):
"""Omit part of a string if needed to make it fit in a maximum length."""
if len(text) > maxlen:
pre = max(0, (maxlen-3)/2)
post = max(0, maxlen-3-pre)
return text[:pre] + '...' + text[len(text)-post:]
return text
def stripid(text):
"""Remove the hexadecimal id from a Python object representation."""
# The behaviour of %p is implementation-dependent, so we need an example.
for pattern in [' at 0x[0-9a-f]{6,}>$', ' at [0-9A-F]{8,}>$']:
if re.search(pattern, repr(Exception)):
return re.sub(pattern, '>', text)
return text
def modulename(path):
"""Return the Python module name for a given path, or None."""
filename = os.path.basename(path)
suffixes = map(lambda (suffix, mode, kind): (len(suffix), suffix),
imp.get_suffixes())
suffixes.sort()
suffixes.reverse() # try longest suffixes first, in case they overlap
for length, suffix in suffixes:
if len(filename) > length and filename[-length:] == suffix:
return filename[:-length]
def allmethods(cl):
methods = {}
for key, value in inspect.getmembers(cl, inspect.ismethod):
methods[key] = 1
for base in cl.__bases__:
methods.update(allmethods(base)) # all your base are belong to us
for key in methods.keys():
methods[key] = getattr(cl, key)
return methods
class ErrorDuringImport(Exception):
"""Errors that occurred while trying to import something to document it."""
def __init__(self, filename, (exc, value, tb)):
self.filename = filename
self.exc = exc
self.value = value
self.tb = tb
def __str__(self):
exc = self.exc
if type(exc) is types.ClassType:
exc = exc.__name__
return 'problem in %s - %s: %s' % (self.filename, exc, self.value)
def importfile(path):
"""Import a Python source file or compiled file given its path."""
magic = imp.get_magic()
file = open(path, 'r')
if file.read(len(magic)) == magic:
kind = imp.PY_COMPILED
else:
kind = imp.PY_SOURCE
file.close()
filename = os.path.basename(path)
name, ext = os.path.splitext(filename)
file = open(path, 'r')
try:
module = imp.load_module(name, file, path, (ext, 'r', kind))
except:
raise ErrorDuringImport(path, sys.exc_info())
file.close()
return module
def ispackage(path):
"""Guess whether a path refers to a package directory."""
if os.path.isdir(path):
for ext in ['.py', '.pyc', '.pyo']:
if os.path.isfile(os.path.join(path, '__init__' + ext)):
return 1
# ---------------------------------------------------- formatter base class
class Doc:
def document(self, object, name=None, *args):
"""Generate documentation for an object."""
args = (object, name) + args
if inspect.ismodule(object): return apply(self.docmodule, args)
if inspect.isclass(object): return apply(self.docclass, args)
if inspect.isroutine(object): return apply(self.docroutine, args)
return apply(self.docother, args)
def fail(self, object, name=None, *args):
"""Raise an exception for unimplemented types."""
message = "don't know how to document object%s of type %s" % (
name and ' ' + repr(name), type(object).__name__)
raise TypeError, message
docmodule = docclass = docroutine = docother = fail
# -------------------------------------------- HTML documentation generator
class HTMLRepr(Repr):
"""Class for safely making an HTML representation of a Python object."""
def __init__(self):
Repr.__init__(self)
self.maxlist = self.maxtuple = self.maxdict = 10
self.maxstring = self.maxother = 100
def escape(self, text):
return replace(text, ('&', '&'), ('<', '<'), ('>', '>'))
def repr(self, object):
return Repr.repr(self, object)
def repr1(self, x, level):
methodname = 'repr_' + join(split(type(x).__name__), '_')
if hasattr(self, methodname):
return getattr(self, methodname)(x, level)
else:
return self.escape(cram(stripid(repr(x)), self.maxother))
def repr_string(self, x, level):
test = cram(x, self.maxstring)
testrepr = repr(test)
if '\\' in test and '\\' not in replace(testrepr, (r'\\', '')):
# Backslashes are only literal in the string and are never
# needed to make any special characters, so show a raw string.
return 'r' + testrepr[0] + self.escape(test) + testrepr[0]
return re.sub(r'((\\[\\abfnrtv\'"]|\\x..|\\u....)+)',
r'<font color="#c040c0">\1</font>',
self.escape(testrepr))
def repr_instance(self, x, level):
try:
return self.escape(cram(stripid(repr(x)), self.maxstring))
except:
return self.escape('<%s instance>' % x.__class__.__name__)
repr_unicode = repr_string
class HTMLDoc(Doc):
"""Formatter class for HTML documentation."""
# ------------------------------------------- HTML formatting utilities
_repr_instance = HTMLRepr()
repr = _repr_instance.repr
escape = _repr_instance.escape
def page(self, title, contents):
"""Format an HTML page."""
return '''
<!doctype html public "-//W3C//DTD HTML 4.0 Transitional//EN">
<html><head><title>Python: %s</title>
<style type="text/css"><!--
TT { font-family: lucida console, lucida typewriter, courier }
--></style></head><body bgcolor="#f0f0f8">
%s
</body></html>''' % (title, contents)
def heading(self, title, fgcol, bgcol, extras=''):
"""Format a page heading."""
return '''
<table width="100%%" cellspacing=0 cellpadding=2 border=0>
<tr bgcolor="%s">
<td valign=bottom><small> <br></small
><font color="%s" face="helvetica, arial"> <br>%s</font></td
><td align=right valign=bottom
><font color="%s" face="helvetica, arial">%s</font></td></tr></table>
''' % (bgcol, fgcol, title, fgcol, extras or ' ')
def section(self, title, fgcol, bgcol, contents, width=20,
prelude='', marginalia=None, gap=' '):
"""Format a section with a heading."""
if marginalia is None:
marginalia = ' ' * width
result = '''
<p><table width="100%%" cellspacing=0 cellpadding=2 border=0>
<tr bgcolor="%s">
<td colspan=3 valign=bottom><small><small> <br></small></small
><font color="%s" face="helvetica, arial">%s</font></td></tr>
''' % (bgcol, fgcol, title)
if prelude:
result = result + '''
<tr bgcolor="%s"><td rowspan=2>%s</td>
<td colspan=2>%s</td></tr>
<tr><td>%s</td>''' % (bgcol, marginalia, prelude, gap)
else:
result = result + '''
<tr><td bgcolor="%s">%s</td><td>%s</td>''' % (bgcol, marginalia, gap)
return result + '<td width="100%%">%s</td></tr></table>' % contents
def bigsection(self, title, *args):
"""Format a section with a big heading."""
title = '<big><strong>%s</strong></big>' % title
return apply(self.section, (title,) + args)
def preformat(self, text):
"""Format literal preformatted text."""
text = self.escape(expandtabs(text))
return replace(text, ('\n\n', '\n \n'), ('\n\n', '\n \n'),
(' ', ' '), ('\n', '<br>\n'))
def multicolumn(self, list, format, cols=4):
"""Format a list of items into a multi-column list."""
result = ''
rows = (len(list)+cols-1)/cols
for col in range(cols):
result = result + '<td width="%d%%" valign=top>' % (100/cols)
for i in range(rows*col, rows*col+rows):
if i < len(list):
result = result + format(list[i]) + '<br>\n'
result = result + '</td>'
return '<table width="100%%"><tr>%s</tr></table>' % result
def small(self, text): return '<small>%s</small>' % text
def grey(self, text): return '<font color="#909090">%s</font>' % text
def namelink(self, name, *dicts):
"""Make a link for an identifier, given name-to-URL mappings."""
for dict in dicts:
if dict.has_key(name):
return '<a href="%s">%s</a>' % (dict[name], name)
return name
def classlink(self, object, modname, *dicts):
"""Make a link for a class."""
name = object.__name__
if object.__module__ != modname:
name = object.__module__ + '.' + name
for dict in dicts:
if dict.has_key(object):
return '<a href="%s">%s</a>' % (dict[object], name)
return name
def modulelink(self, object):
"""Make a link for a module."""
return '<a href="%s.html">%s</a>' % (object.__name__, object.__name__)
def modpkglink(self, (name, path, ispackage, shadowed)):
"""Make a link for a module or package to display in an index."""
if shadowed:
return self.grey(name)
if path:
url = '%s.%s.html' % (path, name)
else:
url = '%s.html' % name
if ispackage:
text = '<strong>%s</strong> (package)' % name
else:
text = name
return '<a href="%s">%s</a>' % (url, text)
def markup(self, text, escape=None, funcs={}, classes={}, methods={}):
"""Mark up some plain text, given a context of symbols to look for.
Each context dictionary maps object names to anchor names."""
escape = escape or self.escape
results = []
here = 0
pattern = re.compile(r'\b((http|ftp)://\S+[\w/]|'
r'RFC[- ]?(\d+)|'
r'(self\.)?(\w+))\b')
while 1:
match = pattern.search(text, here)
if not match: break
start, end = match.span()
results.append(escape(text[here:start]))
all, scheme, rfc, selfdot, name = match.groups()
if scheme:
results.append('<a href="%s">%s</a>' % (all, escape(all)))
elif rfc:
url = 'http://www.rfc-editor.org/rfc/rfc%s.txt' % rfc
results.append('<a href="%s">%s</a>' % (url, escape(all)))
elif text[end:end+1] == '(':
results.append(self.namelink(name, methods, funcs, classes))
elif selfdot:
results.append('self.<strong>%s</strong>' % name)
else:
results.append(self.namelink(name, classes))
here = end
results.append(escape(text[here:]))
return join(results, '')
# ---------------------------------------------- type-specific routines
def formattree(self, tree, modname, classes={}, parent=None):
"""Produce HTML for a class tree as given by inspect.getclasstree()."""
result = ''
for entry in tree:
if type(entry) is type(()):
c, bases = entry
result = result + '<dt><font face="helvetica, arial"><small>'
result = result + self.classlink(c, modname, classes)
if bases and bases != (parent,):
parents = []
for base in bases:
parents.append(self.classlink(base, modname, classes))
result = result + '(' + join(parents, ', ') + ')'
result = result + '\n</small></font></dt>'
elif type(entry) is type([]):
result = result + '<dd>\n%s</dd>\n' % self.formattree(
entry, modname, classes, c)
return '<dl>\n%s</dl>\n' % result
def docmodule(self, object, name=None):
"""Produce HTML documentation for a module object."""
name = object.__name__ # ignore the passed-in name
parts = split(name, '.')
links = []
for i in range(len(parts)-1):
links.append(
'<a href="%s.html"><font color="#ffffff">%s</font></a>' %
(join(parts[:i+1], '.'), parts[i]))
linkedname = join(links + parts[-1:], '.')
head = '<big><big><strong>%s</strong></big></big>' % linkedname
try:
path = inspect.getabsfile(object)
filelink = '<a href="file:%s">%s</a>' % (path, path)
except TypeError:
filelink = '(built-in)'
info = []
if hasattr(object, '__version__'):
version = str(object.__version__)
if version[:11] == '$' + 'Revision: ' and version[-1:] == '$':
version = strip(version[11:-1])
info.append('version %s' % self.escape(version))
if hasattr(object, '__date__'):
info.append(self.escape(str(object.__date__)))
if info:
head = head + ' (%s)' % join(info, ', ')
result = self.heading(
head, '#ffffff', '#7799ee', '<a href=".">index</a><br>' + filelink)
modules = inspect.getmembers(object, inspect.ismodule)
if 0 and hasattr(object, '__all__'): # disabled for now
visible = lambda key, all=object.__all__: key in all
else:
visible = lambda key: key[:1] != '_'
classes, cdict = [], {}
for key, value in inspect.getmembers(object, inspect.isclass):
if visible(key) and (
inspect.getmodule(value) or object) is object:
classes.append((key, value))
cdict[key] = cdict[value] = '#' + key
for key, value in classes:
for base in value.__bases__:
key, modname = base.__name__, base.__module__
module = sys.modules.get(modname)
if modname != name and module and hasattr(module, key):
if getattr(module, key) is base:
if not cdict.has_key(key):
cdict[key] = cdict[base] = modname + '.html#' + key
funcs, fdict = [], {}
for key, value in inspect.getmembers(object, inspect.isroutine):
if visible(key) and (inspect.isbuiltin(value) or
inspect.getmodule(value) is object):
funcs.append((key, value))
fdict[key] = '#-' + key
if inspect.isfunction(value): fdict[value] = fdict[key]
constants = []
for key, value in inspect.getmembers(object, isconstant):
if visible(key):
constants.append((key, value))
doc = self.markup(getdoc(object), self.preformat, fdict, cdict)
doc = doc and '<tt>%s</tt>' % doc
result = result + '<p>%s</p>\n' % self.small(doc)
if hasattr(object, '__path__'):
modpkgs = []
modnames = []
for file in os.listdir(object.__path__[0]):
if file[:1] != '_':
path = os.path.join(object.__path__[0], file)
modname = modulename(file)
if modname and modname not in modnames:
modpkgs.append((modname, name, 0, 0))
modnames.append(modname)
elif ispackage(path):
modpkgs.append((file, name, 1, 0))
modpkgs.sort()
contents = self.multicolumn(modpkgs, self.modpkglink)
result = result + self.bigsection(
'Package Contents', '#ffffff', '#aa55cc', contents)
elif modules:
contents = self.multicolumn(
modules, lambda (key, value), s=self: s.modulelink(value))
result = result + self.bigsection(
'Modules', '#fffff', '#aa55cc', contents)
if classes:
classlist = map(lambda (key, value): value, classes)
contents = [self.formattree(
inspect.getclasstree(classlist, 1), name, cdict)]
for key, value in classes:
contents.append(self.document(value, key, fdict, cdict))
result = result + self.bigsection(
'Classes', '#ffffff', '#ee77aa', join(contents))
if funcs:
contents = []
for key, value in funcs:
contents.append(self.document(value, key, fdict, cdict))
result = result + self.bigsection(
'Functions', '#ffffff', '#eeaa77', join(contents))
if constants:
contents = []
for key, value in constants:
contents.append(self.document(value, key))
result = result + self.bigsection(
'Constants', '#ffffff', '#55aa55', join(contents, '<br>'))
if hasattr(object, '__author__'):
contents = self.markup(str(object.__author__), self.preformat)
result = result + self.bigsection(
'Author', '#ffffff', '#7799ee', contents)
if hasattr(object, '__credits__'):
contents = self.markup(str(object.__credits__), self.preformat)
result = result + self.bigsection(
'Credits', '#ffffff', '#7799ee', contents)
return result
def docclass(self, object, name=None, funcs={}, classes={}):
"""Produce HTML documentation for a class object."""
realname = object.__name__
name = name or realname
bases = object.__bases__
contents = ''
methods, mdict = [], {}
for key, value in allmethods(object).items():
methods.append((key, value))
mdict[key] = mdict[value] = '#' + name + '-' + key
methods.sort()
for key, value in methods:
contents = contents + self.document(
value, key, funcs, classes, mdict, object)
if name == realname:
title = '<a name="%s">class <strong>%s</strong></a>' % (
name, realname)
else:
title = '<strong>%s</strong> = <a name="%s">class %s</a>' % (
name, name, realname)
if bases:
parents = []
for base in bases:
parents.append(
self.classlink(base, object.__module__, classes))
title = title + '(%s)' % join(parents, ', ')
doc = self.markup(
getdoc(object), self.preformat, funcs, classes, mdict)
doc = self.small(doc and '<tt>%s<br> </tt>' % doc or '<tt> </tt>')
return self.section(title, '#000000', '#ffc8d8', contents, 10, doc)
def formatvalue(self, object):
"""Format an argument default value as text."""
return self.small(self.grey('=' + self.repr(object)))
def docroutine(self, object, name=None,
funcs={}, classes={}, methods={}, cl=None):
"""Produce HTML documentation for a function or method object."""
realname = object.__name__
name = name or realname
anchor = (cl and cl.__name__ or '') + '-' + name
note = ''
skipdocs = 0
if inspect.ismethod(object):
if cl:
if object.im_class is not cl:
base = object.im_class
url = '#%s-%s' % (base.__name__, name)
basename = base.__name__
if base.__module__ != cl.__module__:
url = base.__module__ + '.html' + url
basename = base.__module__ + '.' + basename
note = ' from <a href="%s">%s</a>' % (url, basename)
skipdocs = 1
else:
note = (object.im_self and
' method of ' + self.repr(object.im_self) or
' unbound %s method' % object.im_class.__name__)
object = object.im_func
if name == realname:
title = '<a name="%s"><strong>%s</strong></a>' % (anchor, realname)
else:
if (cl and cl.__dict__.has_key(realname) and
cl.__dict__[realname] is object):
reallink = '<a href="#%s">%s</a>' % (
cl.__name__ + '-' + realname, realname)
skipdocs = 1
else:
reallink = realname
title = '<a name="%s"><strong>%s</strong></a> = %s' % (
anchor, name, reallink)
if inspect.isbuiltin(object):
argspec = '(...)'
else:
args, varargs, varkw, defaults = inspect.getargspec(object)
argspec = inspect.formatargspec(
args, varargs, varkw, defaults, formatvalue=self.formatvalue)
if realname == '<lambda>':
decl = '<em>lambda</em>'
argspec = argspec[1:-1] # remove parentheses
decl = title + argspec + (note and self.small(self.grey(
'<font face="helvetica, arial">%s</font>' % note)))
if skipdocs:
return '<dl><dt>%s</dl>\n' % decl
else:
doc = self.markup(
getdoc(object), self.preformat, funcs, classes, methods)
doc = doc and '<tt>%s</tt>' % doc
return '<dl><dt>%s<dd>%s</dl>\n' % (decl, self.small(doc))
def docother(self, object, name=None):
"""Produce HTML documentation for a data object."""
return '<strong>%s</strong> = %s' % (name, self.repr(object))
def index(self, dir, shadowed=None):
"""Generate an HTML index for a directory of modules."""
modpkgs = []
if shadowed is None: shadowed = {}
seen = {}
files = os.listdir(dir)
def found(name, ispackage,
modpkgs=modpkgs, shadowed=shadowed, seen=seen):
if not seen.has_key(name):
modpkgs.append((name, '', ispackage, shadowed.has_key(name)))
seen[name] = 1
shadowed[name] = 1
# Package spam/__init__.py takes precedence over module spam.py.
for file in files:
path = os.path.join(dir, file)
if ispackage(path): found(file, 1)
for file in files:
path = os.path.join(dir, file)
if file[:1] != '_' and os.path.isfile(path):
modname = modulename(file)
if modname: found(modname, 0)
modpkgs.sort()
contents = self.multicolumn(modpkgs, self.modpkglink)
return self.bigsection(dir, '#ffffff', '#ee77aa', contents)
# -------------------------------------------- text documentation generator
class TextRepr(Repr):
"""Class for safely making a text representation of a Python object."""
def __init__(self):
Repr.__init__(self)
self.maxlist = self.maxtuple = self.maxdict = 10
self.maxstring = self.maxother = 100
def repr1(self, x, level):
methodname = 'repr_' + join(split(type(x).__name__), '_')
if hasattr(self, methodname):
return getattr(self, methodname)(x, level)
else:
return cram(stripid(repr(x)), self.maxother)
def repr_string(self, x, level):
test = cram(x, self.maxstring)
testrepr = repr(test)
if '\\' in test and '\\' not in replace(testrepr, (r'\\', '')):
# Backslashes are only literal in the string and are never
# needed to make any special characters, so show a raw string.
return 'r' + testrepr[0] + test + testrepr[0]
return testrepr
def repr_instance(self, x, level):
try:
return cram(stripid(repr(x)), self.maxstring)
except:
return '<%s instance>' % x.__class__.__name__
class TextDoc(Doc):
"""Formatter class for text documentation."""
# ------------------------------------------- text formatting utilities
_repr_instance = TextRepr()
repr = _repr_instance.repr
def bold(self, text):
"""Format a string in bold by overstriking."""
return join(map(lambda ch: ch + '\b' + ch, text), '')
def indent(self, text, prefix=' '):
"""Indent text by prepending a given prefix to each line."""
if not text: return ''
lines = split(text, '\n')
lines = map(lambda line, prefix=prefix: prefix + line, lines)
if lines: lines[-1] = rstrip(lines[-1])
return join(lines, '\n')
def section(self, title, contents):
"""Format a section with a given heading."""
return self.bold(title) + '\n' + rstrip(self.indent(contents)) + '\n\n'
# ---------------------------------------------- type-specific routines
def formattree(self, tree, modname, parent=None, prefix=''):
"""Render in text a class tree as returned by inspect.getclasstree()."""
result = ''
for entry in tree:
if type(entry) is type(()):
c, bases = entry
result = result + prefix + classname(c, modname)
if bases and bases != (parent,):
parents = map(lambda c, m=modname: classname(c, m), bases)
result = result + '(%s)' % join(parents, ', ')
result = result + '\n'
elif type(entry) is type([]):
result = result + self.formattree(
entry, modname, c, prefix + ' ')
return result
def docmodule(self, object, name=None):
"""Produce text documentation for a given module object."""
name = object.__name__ # ignore the passed-in name
namesec = name
lines = split(strip(getdoc(object)), '\n')
if len(lines) == 1:
if lines[0]: namesec = namesec + ' - ' + lines[0]
lines = []
elif len(lines) >= 2 and not rstrip(lines[1]):
if lines[0]: namesec = namesec + ' - ' + lines[0]
lines = lines[2:]
result = self.section('NAME', namesec)
try:
file = inspect.getabsfile(object)
except TypeError:
file = '(built-in)'
result = result + self.section('FILE', file)
if lines:
result = result + self.section('DESCRIPTION', join(lines, '\n'))
classes = []
for key, value in inspect.getmembers(object, inspect.isclass):
if (inspect.getmodule(value) or object) is object:
classes.append((key, value))
funcs = []
for key, value in inspect.getmembers(object, inspect.isroutine):
if inspect.isbuiltin(value) or inspect.getmodule(value) is object:
funcs.append((key, value))
constants = []
for key, value in inspect.getmembers(object, isconstant):
if key[:1] != '_':
constants.append((key, value))
if hasattr(object, '__path__'):
modpkgs = []
for file in os.listdir(object.__path__[0]):
if file[:1] != '_':
path = os.path.join(object.__path__[0], file)
modname = modulename(file)
if modname and modname not in modpkgs:
modpkgs.append(modname)
elif ispackage(path):
modpkgs.append(file + ' (package)')
modpkgs.sort()
result = result + self.section(
'PACKAGE CONTENTS', join(modpkgs, '\n'))
if classes:
classlist = map(lambda (key, value): value, classes)
contents = [self.formattree(
inspect.getclasstree(classlist, 1), name)]
for key, value in classes:
contents.append(self.document(value, key))
result = result + self.section('CLASSES', join(contents, '\n'))
if funcs:
contents = []
for key, value in funcs:
contents.append(self.document(value, key))
result = result + self.section('FUNCTIONS', join(contents, '\n'))
if constants:
contents = []
for key, value in constants:
contents.append(self.docother(value, key, 70))
result = result + self.section('CONSTANTS', join(contents, '\n'))
if hasattr(object, '__version__'):
version = str(object.__version__)
if version[:11] == '$' + 'Revision: ' and version[-1:] == '$':
version = strip(version[11:-1])
result = result + self.section('VERSION', version)
if hasattr(object, '__date__'):
result = result + self.section('DATE', str(object.__date__))
if hasattr(object, '__author__'):
result = result + self.section('AUTHOR', str(object.__author__))
if hasattr(object, '__credits__'):
result = result + self.section('CREDITS', str(object.__credits__))
return result
def docclass(self, object, name=None):
"""Produce text documentation for a given class object."""
realname = object.__name__
name = name or realname
bases = object.__bases__
if name == realname:
title = 'class ' + self.bold(realname)
else:
title = self.bold(name) + ' = class ' + realname
if bases:
def makename(c, m=object.__module__): return classname(c, m)
parents = map(makename, bases)
title = title + '(%s)' % join(parents, ', ')
doc = getdoc(object)
contents = doc and doc + '\n'
methods = allmethods(object).items()
methods.sort()
for key, value in methods:
contents = contents + '\n' + self.document(value, key, object)
if not contents: return title + '\n'
return title + '\n' + self.indent(rstrip(contents), ' | ') + '\n'
def formatvalue(self, object):
"""Format an argument default value as text."""
return '=' + self.repr(object)
def docroutine(self, object, name=None, cl=None):
"""Produce text documentation for a function or method object."""
realname = object.__name__
name = name or realname
note = ''
skipdocs = 0
if inspect.ismethod(object):
if cl:
if object.im_class is not cl:
base = object.im_class
basename = base.__name__
if base.__module__ != cl.__module__:
basename = base.__module__ + '.' + basename
note = ' from %s' % basename
skipdocs = 1
else:
if object.im_self:
note = ' method of %s' % self.repr(object.im_self)
else:
note = ' unbound %s method' % object.im_class.__name__
object = object.im_func
if name == realname:
title = self.bold(realname)
else:
if (cl and cl.__dict__.has_key(realname) and
cl.__dict__[realname] is object):
skipdocs = 1
title = self.bold(name) + ' = ' + realname
if inspect.isbuiltin(object):
argspec = '(...)'
else:
args, varargs, varkw, defaults = inspect.getargspec(object)
argspec = inspect.formatargspec(
args, varargs, varkw, defaults, formatvalue=self.formatvalue)
if realname == '<lambda>':
title = 'lambda'
argspec = argspec[1:-1] # remove parentheses
decl = title + argspec + note
if skipdocs:
return decl + '\n'
else:
doc = getdoc(object) or ''
return decl + '\n' + (doc and rstrip(self.indent(doc)) + '\n')
def docother(self, object, name=None, maxlen=None):
"""Produce text documentation for a data object."""
repr = self.repr(object)
if maxlen:
line = name + ' = ' + repr
chop = maxlen - len(line)
if chop < 0: repr = repr[:chop] + '...'
line = self.bold(name) + ' = ' + repr
return line
# --------------------------------------------------------- user interfaces
def pager(text):
"""The first time this is called, determine what kind of pager to use."""
global pager
pager = getpager()
pager(text)
def getpager():
"""Decide what method to use for paging through text."""
if type(sys.stdout) is not types.FileType:
return plainpager
if not sys.stdin.isatty() or not sys.stdout.isatty():
return plainpager
if os.environ.has_key('PAGER'):
return lambda a: pipepager(a, os.environ['PAGER'])
if sys.platform == 'win32':
return lambda a: tempfilepager(a, 'more <')
if hasattr(os, 'system') and os.system('less 2>/dev/null') == 0:
return lambda a: pipepager(a, 'less')
import tempfile
filename = tempfile.mktemp()
open(filename, 'w').close()
try:
if hasattr(os, 'system') and os.system('more %s' % filename) == 0:
return lambda text: pipepager(text, 'more')
else:
return ttypager
finally:
os.unlink(filename)
def pipepager(text, cmd):
"""Page through text by feeding it to another program."""
pipe = os.popen(cmd, 'w')
try:
pipe.write(text)
pipe.close()
except IOError:
# Ignore broken pipes caused by quitting the pager program.
pass
def tempfilepager(text, cmd):
"""Page through text by invoking a program on a temporary file."""
import tempfile
filename = tempfile.mktemp()
file = open(filename, 'w')
file.write(text)
file.close()
try:
os.system(cmd + ' ' + filename)
finally:
os.unlink(filename)
def plain(text):
"""Remove boldface formatting from text."""
return re.sub('.\b', '', text)
def ttypager(text):
"""Page through text on a text terminal."""
lines = split(plain(text), '\n')
try:
import tty
fd = sys.stdin.fileno()
old = tty.tcgetattr(fd)
tty.setcbreak(fd)
getchar = lambda: sys.stdin.read(1)
except (ImportError, AttributeError):
tty = None
getchar = lambda: sys.stdin.readline()[:-1][:1]
try:
r = inc = os.environ.get('LINES', 25) - 1
sys.stdout.write(join(lines[:inc], '\n') + '\n')
while lines[r:]:
sys.stdout.write('-- more --')
sys.stdout.flush()
c = getchar()
if c in ['q', 'Q']:
sys.stdout.write('\r \r')
break
elif c in ['\r', '\n']:
sys.stdout.write('\r \r' + lines[r] + '\n')
r = r + 1
continue
if c in ['b', 'B', '\x1b']:
r = r - inc - inc
if r < 0: r = 0
sys.stdout.write('\n' + join(lines[r:r+inc], '\n') + '\n')
r = r + inc
finally:
if tty:
tty.tcsetattr(fd, tty.TCSAFLUSH, old)
def plainpager(text):
"""Simply print unformatted text. This is the ultimate fallback."""
sys.stdout.write(plain(text))
def describe(thing):
"""Produce a short description of the given thing."""
if inspect.ismodule(thing):
if thing.__name__ in sys.builtin_module_names:
return 'built-in module ' + thing.__name__
if hasattr(thing, '__path__'):
return 'package ' + thing.__name__
else:
return 'module ' + thing.__name__
if inspect.isbuiltin(thing):
return 'built-in function ' + thing.__name__
if inspect.isclass(thing):
return 'class ' + thing.__name__
if inspect.isfunction(thing):
return 'function ' + thing.__name__
if inspect.ismethod(thing):
return 'method ' + thing.__name__
if type(thing) is types.InstanceType:
return 'instance of ' + thing.__class__.__name__
return type(thing).__name__
def freshimport(name, cache={}):
"""Import a module, reloading it if the source file has changed."""
topmodule = __import__(name)
module = None
for component in split(name, '.'):
if module == None:
module = topmodule
path = split(name, '.')[0]
else:
module = getattr(module, component)
path = path + '.' + component
if hasattr(module, '__file__'):
file = module.__file__
if os.path.exists(file):
info = (file, os.path.getmtime(file), os.path.getsize(file))
if cache.has_key(path) and cache[path] != info:
module = reload(module)
file = module.__file__
if os.path.exists(file):
info = (file, os.path.getmtime(file), os.path.getsize(file))
cache[path] = info
return module
def locate(path):
"""Locate an object by name (or dotted path), importing as necessary."""
if not path: # special case: imp.find_module('') strangely succeeds
return None
if type(path) is not types.StringType:
return path
parts = split(path, '.')
n = len(parts)
while n > 0:
path = join(parts[:n], '.')
try:
module = freshimport(path)
except:
# Did the error occur before or after the module was found?
(exc, value, tb) = info = sys.exc_info()
if sys.modules.has_key(path):
# An error occured while executing the imported module.
raise ErrorDuringImport(sys.modules[path].__file__, info)
elif exc is SyntaxError:
# A SyntaxError occurred before we could execute the module.
raise ErrorDuringImport(value.filename, info)
elif exc is ImportError and \
split(lower(str(value)))[:2] == ['no', 'module']:
# The module was not found.
n = n - 1
continue
else:
# Some other error occurred before executing the module.
raise DocImportError(filename, sys.exc_info())
try:
x = module
for p in parts[n:]:
x = getattr(x, p)
return x
except AttributeError:
n = n - 1
continue
if hasattr(__builtins__, path):
return getattr(__builtins__, path)
return None
# --------------------------------------- interactive interpreter interface
text = TextDoc()
html = HTMLDoc()
def doc(thing):
"""Display documentation on an object (for interactive use)."""
if type(thing) is type(""):
try:
object = locate(thing)
except ErrorDuringImport, value:
print value
return
if object:
thing = object
else:
print 'no Python documentation found for %s' % repr(thing)
return
desc = describe(thing)
module = inspect.getmodule(thing)
if module and module is not thing:
desc = desc + ' in module ' + module.__name__
pager('Help on %s:\n\n' % desc + text.document(thing))
def writedoc(key):
"""Write HTML documentation to a file in the current directory."""
try:
object = locate(key)
except ErrorDuringImport, value:
print value
else:
if object:
page = html.page('Python: ' + describe(object),
html.document(object, object.__name__))
file = open(key + '.html', 'w')
file.write(page)
file.close()
print 'wrote', key + '.html'
else:
print 'no Python documentation found for %s' % repr(key)
def writedocs(dir, pkgpath='', done={}):
"""Write out HTML documentation for all modules in a directory tree."""
for file in os.listdir(dir):
path = os.path.join(dir, file)
if ispackage(path):
writedocs(path, pkgpath + file + '.')
elif os.path.isfile(path):
modname = modulename(path)
if modname:
modname = pkgpath + modname
if not done.has_key(modname):
done[modname] = 1
writedoc(modname)
class Helper:
def __repr__(self):
return '''To get help on a Python object, call help(object).
To get help on a module or package, either import it before calling
help(module) or call help('modulename').'''
def __call__(self, *args):
if args:
doc(args[0])
else:
print repr(self)
help = Helper()
def man(key):
"""Display documentation on an object in a form similar to man(1)."""
object = locate(key)
if object:
title = 'Python Library Documentation: ' + describe(object)
lastdot = rfind(key, '.')
if lastdot > 0: title = title + ' in ' + key[:lastdot]
pager('\n' + title + '\n\n' + text.document(object, key))
found = 1
else:
print 'no Python documentation found for %s' % repr(key)
class Scanner:
"""A generic tree iterator."""
def __init__(self, roots, children, recurse):
self.roots = roots[:]
self.state = []
self.children = children
self.recurse = recurse
def next(self):
if not self.state:
if not self.roots:
return None
root = self.roots.pop(0)
self.state = [(root, self.children(root))]
node, children = self.state[-1]
if not children:
self.state.pop()
return self.next()
child = children.pop(0)
if self.recurse(child):
self.state.append((child, self.children(child)))
return child
class ModuleScanner(Scanner):
"""An interruptible scanner that searches module synopses."""
def __init__(self):
roots = map(lambda dir: (dir, ''), pathdirs())
Scanner.__init__(self, roots, self.submodules, self.ispackage)
def submodules(self, (dir, package)):
children = []
for file in os.listdir(dir):
path = os.path.join(dir, file)
if ispackage(path):
children.append((path, package + (package and '.') + file))
else:
children.append((path, package))
children.sort()
return children
def ispackage(self, (dir, package)):
return ispackage(dir)
def run(self, key, callback, completer=None):
self.quit = 0
seen = {}
for modname in sys.builtin_module_names:
if modname != '__main__':
seen[modname] = 1
desc = split(freshimport(modname).__doc__ or '', '\n')[0]
if find(lower(modname + ' - ' + desc), lower(key)) >= 0:
callback(None, modname, desc)
while not self.quit:
node = self.next()
if not node: break
path, package = node
modname = modulename(path)
if os.path.isfile(path) and modname:
modname = package + (package and '.') + modname
if not seen.has_key(modname):
seen[modname] = 1
desc = synopsis(path) or ''
if find(lower(modname + ' - ' + desc), lower(key)) >= 0:
callback(path, modname, desc)
if completer: completer()
def apropos(key):
"""Print all the one-line module summaries that contain a substring."""
def callback(path, modname, desc):
if modname[-9:] == '.__init__':
modname = modname[:-9] + ' (package)'
print modname, '-', desc or '(no description)'
ModuleScanner().run(key, callback)
# --------------------------------------------------- web browser interface
def serve(port, callback=None):
import BaseHTTPServer, mimetools, select
# Patch up mimetools.Message so it doesn't break if rfc822 is reloaded.
class Message(mimetools.Message):
def __init__(self, fp, seekable=1):
Message = self.__class__
Message.__bases__[0].__bases__[0].__init__(self, fp, seekable)
self.encodingheader = self.getheader('content-transfer-encoding')
self.typeheader = self.getheader('content-type')
self.parsetype()
self.parseplist()
class DocHandler(BaseHTTPServer.BaseHTTPRequestHandler):
def send_document(self, title, contents):
try:
self.send_response(200)
self.send_header('Content-Type', 'text/html')
self.end_headers()
self.wfile.write(html.page(title, contents))
except IOError: pass
def do_GET(self):
path = self.path
if path[-5:] == '.html': path = path[:-5]
if path[:1] == '/': path = path[1:]
if path and path != '.':
try:
obj = locate(path)
except ErrorDuringImport, value:
self.send_document(path, html.escape(str(value)))
return
if obj:
self.send_document(describe(obj), html.document(obj, path))
else:
self.send_document(path,
'no Python documentation found for %s' % repr(path))
else:
heading = html.heading(
'<big><big><strong>Python: Index of Modules</strong></big></big>',
'#ffffff', '#7799ee')
def bltinlink(name):
return '<a href="%s.html">%s</a>' % (name, name)
names = filter(lambda x: x != '__main__',
sys.builtin_module_names)
contents = html.multicolumn(names, bltinlink)
indices = ['<p>' + html.bigsection(
'Built-in Modules', '#ffffff', '#ee77aa', contents)]
seen = {}
for dir in pathdirs():
indices.append(html.index(dir, seen))
contents = heading + join(indices) + '''<p align=right>
<small><small><font color="#909090" face="helvetica, arial"><strong>
pydoc</strong> by Ka-Ping Yee <ping@lfw.org></font></small></small>'''
self.send_document('Index of Modules', contents)
def log_message(self, *args): pass
class DocServer(BaseHTTPServer.HTTPServer):
def __init__(self, port, callback):
host = (sys.platform == 'mac') and '127.0.0.1' or 'localhost'
self.address = ('', port)
self.url = 'http://%s:%d/' % (host, port)
self.callback = callback
self.base.__init__(self, self.address, self.handler)
def serve_until_quit(self):
import select
self.quit = 0
while not self.quit:
rd, wr, ex = select.select([self.socket.fileno()], [], [], 1)
if rd: self.handle_request()
def server_activate(self):
self.base.server_activate(self)
if self.callback: self.callback(self)
DocServer.base = BaseHTTPServer.HTTPServer
DocServer.handler = DocHandler
DocHandler.MessageClass = Message
try:
DocServer(port, callback).serve_until_quit()
except (KeyboardInterrupt, select.error):
pass
print 'server stopped'
# ----------------------------------------------------- graphical interface
def gui():
"""Graphical interface (starts web server and pops up a control window)."""
class GUI:
def __init__(self, window, port=7464):
self.window = window
self.server = None
self.scanner = None
import Tkinter
self.server_frm = Tkinter.Frame(window)
self.title_lbl = Tkinter.Label(self.server_frm,
text='Starting server...\n ')
self.open_btn = Tkinter.Button(self.server_frm,
text='open browser', command=self.open, state='disabled')
self.quit_btn = Tkinter.Button(self.server_frm,
text='quit serving', command=self.quit, state='disabled')
self.search_frm = Tkinter.Frame(window)
self.search_lbl = Tkinter.Label(self.search_frm, text='Search for')
self.search_ent = Tkinter.Entry(self.search_frm)
self.search_ent.bind('<Return>', self.search)
self.stop_btn = Tkinter.Button(self.search_frm,
text='stop', pady=0, command=self.stop, state='disabled')
if sys.platform == 'win32':
# Trying to hide and show this button crashes under Windows.
self.stop_btn.pack(side='right')
self.window.title('pydoc')
self.window.protocol('WM_DELETE_WINDOW', self.quit)
self.title_lbl.pack(side='top', fill='x')
self.open_btn.pack(side='left', fill='x', expand=1)
self.quit_btn.pack(side='right', fill='x', expand=1)
self.server_frm.pack(side='top', fill='x')
self.search_lbl.pack(side='left')
self.search_ent.pack(side='right', fill='x', expand=1)
self.search_frm.pack(side='top', fill='x')
self.search_ent.focus_set()
font = ('helvetica', sys.platform == 'win32' and 8 or 10)
self.result_lst = Tkinter.Listbox(window, font=font, height=6)
self.result_lst.bind('<Button-1>', self.select)
self.result_lst.bind('<Double-Button-1>', self.goto)
self.result_scr = Tkinter.Scrollbar(window,
orient='vertical', command=self.result_lst.yview)
self.result_lst.config(yscrollcommand=self.result_scr.set)
self.result_frm = Tkinter.Frame(window)
self.goto_btn = Tkinter.Button(self.result_frm,
text='go to selected', command=self.goto)
self.hide_btn = Tkinter.Button(self.result_frm,
text='hide results', command=self.hide)
self.goto_btn.pack(side='left', fill='x', expand=1)
self.hide_btn.pack(side='right', fill='x', expand=1)
self.window.update()
self.minwidth = self.window.winfo_width()
self.minheight = self.window.winfo_height()
self.bigminheight = (self.server_frm.winfo_reqheight() +
self.search_frm.winfo_reqheight() +
self.result_lst.winfo_reqheight() +
self.result_frm.winfo_reqheight())
self.bigwidth, self.bigheight = self.minwidth, self.bigminheight
self.expanded = 0
self.window.wm_geometry('%dx%d' % (self.minwidth, self.minheight))
self.window.wm_minsize(self.minwidth, self.minheight)
import threading
threading.Thread(target=serve, args=(port, self.ready)).start()
def ready(self, server):
self.server = server
self.title_lbl.config(
text='Python documentation server at\n' + server.url)
self.open_btn.config(state='normal')
self.quit_btn.config(state='normal')
def open(self, event=None, url=None):
url = url or self.server.url
try:
import webbrowser
webbrowser.open(url)
except ImportError: # pre-webbrowser.py compatibility
if sys.platform == 'win32':
os.system('start "%s"' % url)
elif sys.platform == 'mac':
try:
import ic
ic.launchurl(url)
except ImportError: pass
else:
rc = os.system('netscape -remote "openURL(%s)" &' % url)
if rc: os.system('netscape "%s" &' % url)
def quit(self, event=None):
if self.server:
self.server.quit = 1
self.window.quit()
def search(self, event=None):
key = self.search_ent.get()
self.stop_btn.pack(side='right')
self.stop_btn.config(state='normal')
self.search_lbl.config(text='Searching for "%s"...' % key)
self.search_ent.forget()
self.search_lbl.pack(side='left')
self.result_lst.delete(0, 'end')
self.goto_btn.config(state='disabled')
self.expand()
import threading
if self.scanner:
self.scanner.quit = 1
self.scanner = ModuleScanner()
threading.Thread(target=self.scanner.run,
args=(key, self.update, self.done)).start()
def update(self, path, modname, desc):
if modname[-9:] == '.__init__':
modname = modname[:-9] + ' (package)'
self.result_lst.insert('end',
modname + ' - ' + (desc or '(no description)'))
def stop(self, event=None):
if self.scanner:
self.scanner.quit = 1
self.scanner = None
def done(self):
self.scanner = None
self.search_lbl.config(text='Search for')
self.search_lbl.pack(side='left')
self.search_ent.pack(side='right', fill='x', expand=1)
if sys.platform != 'win32': self.stop_btn.forget()
self.stop_btn.config(state='disabled')
def select(self, event=None):
self.goto_btn.config(state='normal')
def goto(self, event=None):
selection = self.result_lst.curselection()
if selection:
modname = split(self.result_lst.get(selection[0]))[0]
self.open(url=self.server.url + modname + '.html')
def collapse(self):
if not self.expanded: return
self.result_frm.forget()
self.result_scr.forget()
self.result_lst.forget()
self.bigwidth = self.window.winfo_width()
self.bigheight = self.window.winfo_height()
self.window.wm_geometry('%dx%d' % (self.minwidth, self.minheight))
self.window.wm_minsize(self.minwidth, self.minheight)
self.expanded = 0
def expand(self):
if self.expanded: return
self.result_frm.pack(side='bottom', fill='x')
self.result_scr.pack(side='right', fill='y')
self.result_lst.pack(side='top', fill='both', expand=1)
self.window.wm_geometry('%dx%d' % (self.bigwidth, self.bigheight))
self.window.wm_minsize(self.minwidth, self.bigminheight)
self.expanded = 1
def hide(self, event=None):
self.stop()
self.collapse()
import Tkinter
try:
gui = GUI(Tkinter.Tk())
Tkinter.mainloop()
except KeyboardInterrupt:
pass
# -------------------------------------------------- command-line interface
def ispath(x):
return type(x) is types.StringType and find(x, os.sep) >= 0
def cli():
"""Command-line interface (looks at sys.argv to decide what to do)."""
import getopt
class BadUsage: pass
# Scripts don't get the current directory in their path by default.
sys.path.insert(0, '.')
try:
opts, args = getopt.getopt(sys.argv[1:], 'gk:p:w')
writing = 0
for opt, val in opts:
if opt == '-g':
gui()
return
if opt == '-k':
apropos(val)
return
if opt == '-p':
try:
port = int(val)
except ValueError:
raise BadUsage
def ready(server):
print 'server ready at %s' % server.url
serve(port, ready)
return
if opt == '-w':
writing = 1
if not args: raise BadUsage
for arg in args:
try:
if ispath(arg) and os.path.isfile(arg):
arg = importfile(arg)
if writing:
if ispath(arg) and os.path.isdir(arg):
writedocs(arg)
else:
writedoc(arg)
else:
man(arg)
except ErrorDuringImport, value:
print value
except (getopt.error, BadUsage):
cmd = sys.argv[0]
print """pydoc - the Python documentation tool
%s <name> ...
Show text documentation on something. <name> may be the name of a
function, module, or package, or a dotted reference to a class or
function within a module or module in a package. If <name> contains
a '%s', it is used as the path to a Python source file to document.
%s -k <keyword>
Search for a keyword in the synopsis lines of all available modules.
%s -p <port>
Start an HTTP server on the given port on the local machine.
%s -g
Pop up a graphical interface for serving and finding documentation.
%s -w <name> ...
Write out the HTML documentation for a module to a file in the current
directory. If <name> contains a '%s', it is treated as a filename.
""" % (cmd, os.sep, cmd, cmd, cmd, cmd, os.sep)
if __name__ == '__main__': cli()
