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python3.8
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aenum
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_common.py
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from __future__ import print_function __all__ = [ 'pyver', 'PY2', 'PY2_6', 'PY3', 'PY3_3', 'PY3_4', 'PY3_5', 'PY3_6', 'PY3_7', 'PY3_11', '_or_', '_and_', '_xor_', '_inv_', '_abs_', '_add_', '_floordiv_', '_lshift_', '_rshift_', '_mod_', '_mul_', '_neg_', '_pos_', '_pow_', '_truediv_', '_sub_', 'unicode', 'basestring', 'baseinteger', 'long', 'NoneType', '_Addendum', 'is_descriptor', 'is_dunder', 'is_sunder', 'is_internal_class', 'is_private_name', 'get_attr_from_chain', '_value', 'constant', 'make_class_unpicklable', 'bltin_property', 'skip', 'nonmember', 'member', 'Member', 'NonMember', 'OrderedDict', ] # imports import sys as _sys pyver = _sys.version_info[:2] PY2 = pyver < (3, ) PY3 = pyver >= (3, ) PY2_6 = (2, 6) PY3_3 = (3, 3) PY3_4 = (3, 4) PY3_5 = (3, 5) PY3_6 = (3, 6) PY3_7 = (3, 7) PY3_11 = (3, 11) import re from operator import or_ as _or_, and_ as _and_, xor as _xor_, inv as _inv_ from operator import abs as _abs_, add as _add_, floordiv as _floordiv_ from operator import lshift as _lshift_, rshift as _rshift_, mod as _mod_ from operator import mul as _mul_, neg as _neg_, pos as _pos_, pow as _pow_ from operator import truediv as _truediv_, sub as _sub_ if PY2: from . import _py2 from ._py2 import * __all__.extend(_py2.__all__) if PY3: from . import _py3 from ._py3 import * __all__.extend(_py3.__all__) bltin_property = property # shims try: from collections import OrderedDict except ImportError: OrderedDict = dict try: unicode unicode = unicode except NameError: # In Python 3 unicode no longer exists (it's just str) unicode = str try: basestring basestring = bytes, unicode except NameError: # In Python 2 basestring is the ancestor of both str and unicode # in Python 3 it's just str, but was missing in 3.1 basestring = str, try: baseinteger = int, long long = long except NameError: baseinteger = int, long = int # deprecated baseint = baseinteger try: NoneType except NameError: NoneType = type(None) class _Addendum(object): def __init__(self, dict, doc, ns): # dict is the dict to update with functions # doc is the docstring to put in the dict # ns is the namespace to remove the function names from self.dict = dict self.ns = ns self.added = set() def __call__(self, func): if isinstance(func, (staticmethod, classmethod)): name = func.__func__.__name__ elif isinstance(func, (property, bltin_property)): name = (func.fget or func.fset or func.fdel).__name__ else: name = func.__name__ self.dict[name] = func self.added.add(name) return func def __getitem__(self, name): return self.dict[name] def __setitem__(self, name, value): self.dict[name] = value def resolve(self): ns = self.ns for name in self.added: del ns[name] return self.dict def is_descriptor(obj): """Returns True if obj is a descriptor, False otherwise.""" return ( hasattr(obj, '__get__') or hasattr(obj, '__set__') or hasattr(obj, '__delete__')) def is_dunder(name): """Returns True if a __dunder__ name, False otherwise.""" return (len(name) > 4 and name[:2] == name[-2:] == '__' and name[2] != '_' and name[-3] != '_') def is_sunder(name): """Returns True if a _sunder_ name, False otherwise.""" return (len(name) > 2 and name[0] == name[-1] == '_' and name[1] != '_' and name[-2] != '_') def is_internal_class(cls_name, obj): # only 3.3 and up, always return False in 3.2 and below if pyver < PY3_3: return False else: qualname = getattr(obj, '__qualname__', False) return not is_descriptor(obj) and qualname and re.search(r"\.?%s\.\w+$" % cls_name, qualname) def is_private_name(cls_name, name): pattern = r'^_%s__\w+[^_]_?$' % (cls_name, ) return re.search(pattern, name) def get_attr_from_chain(cls, attr): sentinel = object() for basecls in cls.mro(): obj = basecls.__dict__.get(attr, sentinel) if obj is not sentinel: return obj def _value(obj): if isinstance(obj, (auto, constant)): return obj.value else: return obj class constant(object): ''' Simple constant descriptor for NamedConstant and Enum use. ''' def __init__(self, value, doc=None): self.value = value self.__doc__ = doc def __get__(self, *args): return self.value def __repr__(self): return '%s(%r)' % (self.__class__.__name__, self.value) def __and__(self, other): return _and_(self.value, _value(other)) def __rand__(self, other): return _and_(_value(other), self.value) def __invert__(self): return _inv_(self.value) def __or__(self, other): return _or_(self.value, _value(other)) def __ror__(self, other): return _or_(_value(other), self.value) def __xor__(self, other): return _xor_(self.value, _value(other)) def __rxor__(self, other): return _xor_(_value(other), self.value) def __abs__(self): return _abs_(self.value) def __add__(self, other): return _add_(self.value, _value(other)) def __radd__(self, other): return _add_(_value(other), self.value) def __neg__(self): return _neg_(self.value) def __pos__(self): return _pos_(self.value) if PY2: def __div__(self, other): return _div_(self.value, _value(other)) def __rdiv__(self, other): return _div_(_value(other), (self.value)) def __floordiv__(self, other): return _floordiv_(self.value, _value(other)) def __rfloordiv__(self, other): return _floordiv_(_value(other), self.value) def __truediv__(self, other): return _truediv_(self.value, _value(other)) def __rtruediv__(self, other): return _truediv_(_value(other), self.value) def __lshift__(self, other): return _lshift_(self.value, _value(other)) def __rlshift__(self, other): return _lshift_(_value(other), self.value) def __rshift__(self, other): return _rshift_(self.value, _value(other)) def __rrshift__(self, other): return _rshift_(_value(other), self.value) def __mod__(self, other): return _mod_(self.value, _value(other)) def __rmod__(self, other): return _mod_(_value(other), self.value) def __mul__(self, other): return _mul_(self.value, _value(other)) def __rmul__(self, other): return _mul_(_value(other), self.value) def __pow__(self, other): return _pow_(self.value, _value(other)) def __rpow__(self, other): return _pow_(_value(other), self.value) def __sub__(self, other): return _sub_(self.value, _value(other)) def __rsub__(self, other): return _sub_(_value(other), self.value) def __set_name__(self, ownerclass, name): self.name = name self.clsname = ownerclass.__name__ def make_class_unpicklable(obj): """ Make the given obj un-picklable. obj should be either a dictionary, on an Enum """ def _break_on_call_reduce(self, proto): raise TypeError('%r cannot be pickled' % self) if isinstance(obj, dict): obj['__reduce_ex__'] = _break_on_call_reduce obj['__module__'] = '<unknown>' else: setattr(obj, '__reduce_ex__', _break_on_call_reduce) setattr(obj, '__module__', '<unknown>') class NonMember(object): """ Protects item from becaming an Enum member during class creation. """ def __init__(self, value): self.value = value def __get__(self, instance, ownerclass=None): return self.value skip = nonmember = NonMember class Member(object): """ Forces item to became an Enum member during class creation. """ def __init__(self, value): self.value = value member = Member