v0.8.1
https://github.com/python/cpython
- HEAD
- refs/heads/2.7
- refs/heads/3.6
- refs/heads/3.7
- refs/heads/3.8
- refs/heads/3.9
- refs/heads/Mariatta-patch-1
- refs/heads/Mariatta-patch-2
- refs/heads/buildbot-custom
- refs/heads/descr-howto-feedback
- refs/heads/master
- refs/heads/revert-23107-revert-13893-fix-issue-37193
- refs/tags/v0.9.8
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- refs/tags/v1.0.1
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- 6c52d76db8b1cb836c136bd6a1044e85bfe8241e
- v3.9.1rc1
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- v3.8.0a1
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- v3.7.9
- v3.7.8rc1
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- 3.1
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- 2.4
- 2.3
- 2.2
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#! /usr/bin/env python
# Print digits of pi forever.
#
# The algorithm, using Python's 'long' integers ("bignums"), works
# with continued fractions, and was conceived by Lambert Meertens.
#
# See also the ABC Programmer's Handbook, by Geurts, Meertens & Pemberton,
# published by Prentice-Hall (UK) Ltd., 1990.
import sys
from mpz import mpz
def main():
mpzone, mpztwo, mpzten = mpz(1), mpz(2), mpz(10)
k, a, b, a1, b1 = mpz(2), mpz(4), mpz(1), mpz(12), mpz(4)
while 1:
# Next approximation
p, q, k = k*k, mpztwo*k+mpzone, k+mpzone
a, b, a1, b1 = a1, b1, p*a+q*a1, p*b+q*b1
# Print common digits
d, d1 = a/b, a1/b1
while d == d1:
output(d)
a, a1 = mpzten*(a%b), mpzten*(a1%b1)
d, d1 = a/b, a1/b1
def output(d):
# Use write() to avoid spaces between the digits
# Use int(d) to avoid a trailing L after each digit
sys.stdout.write(`int(d)`)
# Flush so the output is seen immediately
sys.stdout.flush()
main()
Computing file changes ...