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v0.5.1
https://github.com/python/cpython
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Tip revision: 1015e38be4a52488a506ccb311ab7b23e46f9fa9 authored by Ned Deily on 12 June 2018, 04:24:03 UTC
3.6.6rc1
Tip revision: 1015e38
compat.py
"""Compatibility helpers for the different Python versions."""

import sys

PY34 = sys.version_info >= (3, 4)
PY35 = sys.version_info >= (3, 5)
PY352 = sys.version_info >= (3, 5, 2)


def flatten_list_bytes(list_of_data):
    """Concatenate a sequence of bytes-like objects."""
    if not PY34:
        # On Python 3.3 and older, bytes.join() doesn't handle
        # memoryview.
        list_of_data = (
            bytes(data) if isinstance(data, memoryview) else data
            for data in list_of_data)
    return b''.join(list_of_data)
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