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"""Hacks for Python 2.6"""
__all__ = ["hack_all", "hack_email", "hack_select"]
def hack_all(email=True, select=True):
"""Apply all Python 2.6 patches."""
if email:
hack_email()
if select:
hack_select()
def hack_email():
"""The python2.6 version of email.message_from_string, doesn't work with
unicode strings. And in python3 it will only work with a decoded.
So switch to using only message_from_bytes.
"""
import email
if not hasattr(email, "message_from_bytes"):
email.message_from_bytes = email.message_from_string
def hack_select():
"""The python2.6 version of SocketServer does not handle interrupt calls
from signals. Patch the select call if necessary.
"""
import sys
if sys.version_info[0] == 2 and sys.version_info[1] == 6:
import select
import errno
real_select = select.select
def _eintr_retry(*args):
"""restart a system call interrupted by EINTR"""
while True:
try:
return real_select(*args)
except (OSError, select.error) as ex:
if ex.args[0] != errno.EINTR:
raise
select.select = _eintr_retry
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