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import os
import sys
import types
# Credit to six authors: https://pypi.org/project/six/
# License: MIT
def with_metaclass(meta, *bases):
"""Create a base class with a metaclass."""
# This requires a bit of explanation: the basic idea is to make a dummy
# metaclass for one level of class instantiation that replaces itself with
# the actual metaclass.
class metaclass(meta):
def __new__(cls, name, this_bases, d):
return meta(name, bases, d)
return type.__new__(metaclass, 'temporary_class', (), {})
# Compatability definitions (inspired by six)
PY2 = sys.version_info[0] < 3
if PY2:
# disable flake8 checks on python 3
string_type = basestring # noqa
unicode_type = unicode # noqa
class_types = (type, types.ClassType)
buffer_type = buffer # noqa
else:
string_type = str
unicode_type = str
class_types = (type,)
buffer_type = memoryview
if PY2:
import imp
def load_module_from_file(base_name, module_name, filename):
fp, pathname, description = imp.find_module(
base_name, [os.path.dirname(filename)])
try:
module = imp.load_module(module_name, fp, pathname, description)
finally:
fp.close()
return module
else:
import importlib.util
def load_module_from_file(base_name, module_name, filename):
specs = importlib.util.spec_from_file_location(module_name, filename)
return specs.loader.load_module()
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