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"""
Python 2 Compatibility Layer
This module exists to work around compatibility issues between Python 2 and
Python 3. The main code-base will use Python 3 idioms and this module will
patch Python 2 code to support those changes. When Python 2 support is
dropped this module can be removed and imports can be updated.
"""
try:
from configparser import ConfigParser
except ImportError:
from ConfigParser import SafeConfigParser
class ConfigParser(SafeConfigParser):
def read_file(self, fp):
return self.readfp(fp)
# Used in pydora
def input(prompt):
try:
return raw_input(prompt)
except NameError:
import builtins
return builtins.input(prompt)
# Only used in tests
try:
from unittest.mock import Mock, MagicMock, call, patch # noqa: F401
except ImportError:
try:
from mock import Mock, MagicMock, call, patch # noqa: F401
except ImportError:
pass
try:
from shutil import which
except ImportError:
import os
import sys
# Copypasta from Python 3.6, exists in 3.3+
def which(cmd, mode=os.F_OK | os.X_OK, path=None):
def _access_check(fn, mode):
return (os.path.exists(fn) and os.access(fn, mode)
and not os.path.isdir(fn))
if os.path.dirname(cmd):
if _access_check(cmd, mode):
return cmd
return None
if path is None:
path = os.environ.get("PATH", os.defpath)
if not path:
return None
path = path.split(os.pathsep)
if sys.platform == "win32":
if os.curdir not in path:
path.insert(0, os.curdir)
pathext = os.environ.get("PATHEXT", "").split(os.pathsep)
if any(cmd.lower().endswith(ext.lower()) for ext in pathext):
files = [cmd]
else:
files = [cmd + ext for ext in pathext]
else:
files = [cmd]
seen = set()
for dir in path:
normdir = os.path.normcase(dir)
if normdir not in seen:
seen.add(normdir)
for thefile in files:
name = os.path.join(dir, thefile)
if _access_check(name, mode):
return name
return None
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