pandas-ply-0.1.2.tar.gz

"""Utilities for writing code that runs on Python 2 and 3""" # Copyright (c) 2010-2014 Benjamin Peterson # # Permission is hereby granted, free of charge, to any person obtaining a copy # of this software and associated documentation files (the "Software"), to deal # in the Software without restriction, including without limitation the rights # to use, copy, modify, merge, publish, distribute, sublicense, and/or sell # copies of the Software, and to permit persons to whom the Software is # furnished to do so, subject to the following conditions: # # The above copyright notice and this permission notice shall be included in all # copies or substantial portions of the Software. # # THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR # IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, # FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE # AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER # LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, # OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE # SOFTWARE. from __future__ import absolute_import import functools import operator import sys import types __author__ = "Benjamin Peterson <benjamin@python.org>" __version__ = "1.8.0" # Useful for very coarse version differentiation. PY2 = sys.version_info[0] == 2 PY3 = sys.version_info[0] == 3 if PY3: string_types = str, integer_types = int, class_types = type, text_type = str binary_type = bytes MAXSIZE = sys.maxsize else: string_types = basestring, integer_types = (int, long) class_types = (type, types.ClassType) text_type = unicode binary_type = str if sys.platform.startswith("java"): # Jython always uses 32 bits. MAXSIZE = int((1 << 31) - 1) else: # It's possible to have sizeof(long) != sizeof(Py_ssize_t). class X(object): def __len__(self): return 1 << 31 try: len(X()) except OverflowError: # 32-bit MAXSIZE = int((1 << 31) - 1) else: # 64-bit MAXSIZE = int((1 << 63) - 1) del X def _add_doc(func, doc): """Add documentation to a function.""" func.__doc__ = doc def _import_module(name): """Import module, returning the module after the last dot.""" __import__(name) return sys.modules[name] class _LazyDescr(object): def __init__(self, name): self.name = name def __get__(self, obj, tp): result = self._resolve() setattr(obj, self.name, result) # Invokes __set__. # This is a bit ugly, but it avoids running this again. delattr(obj.__class__, self.name) return result class MovedModule(_LazyDescr): def __init__(self, name, old, new=None): super(MovedModule, self).__init__(name) if PY3: if new is None: new = name self.mod = new else: self.mod = old def _resolve(self): return _import_module(self.mod) def __getattr__(self, attr): _module = self._resolve() value = getattr(_module, attr) setattr(self, attr, value) return value class _LazyModule(types.ModuleType): def __init__(self, name): super(_LazyModule, self).__init__(name) self.__doc__ = self.__class__.__doc__ def __dir__(self): attrs = ["__doc__", "__name__"] attrs += [attr.name for attr in self._moved_attributes] return attrs # Subclasses should override this _moved_attributes = [] class MovedAttribute(_LazyDescr): def __init__(self, name, old_mod, new_mod, old_attr=None, new_attr=None): super(MovedAttribute, self).__init__(name) if PY3: if new_mod is None: new_mod = name self.mod = new_mod if new_attr is None: if old_attr is None: new_attr = name else: new_attr = old_attr self.attr = new_attr else: self.mod = old_mod if old_attr is None: old_attr = name self.attr = old_attr def _resolve(self): module = _import_module(self.mod) return getattr(module, self.attr) class _SixMetaPathImporter(object): """ A meta path importer to import six.moves and its submodules. This class implements a PEP302 finder and loader. It should be compatible with Python 2.5 and all existing versions of Python3 """ def __init__(self, six_module_name): self.name = six_module_name self.known_modules = {} def _add_module(self, mod, *fullnames): for fullname in fullnames: self.known_modules[self.name + "." + fullname] = mod def _get_module(self, fullname): return self.known_modules[self.name + "." + fullname] def find_module(self, fullname, path=None): if fullname in self.known_modules: return self return None def __get_module(self, fullname): try: return self.known_modules[fullname] except KeyError: raise ImportError("This loader does not know module " + fullname) def load_module(self, fullname): try: # in case of a reload return sys.modules[fullname] except KeyError: pass mod = self.__get_module(fullname) if isinstance(mod, MovedModule): mod = mod._resolve() else: mod.__loader__ = self sys.modules[fullname] = mod return mod def is_package(self, fullname): """ Return true, if the named module is a package. We need this method to get correct spec objects with Python 3.4 (see PEP451) """ return hasattr(self.__get_module(fullname), "__path__") def get_code(self, fullname): """Return None Required, if is_package is implemented""" self.__get_module(fullname) # eventually raises ImportError return None get_source = get_code # same as get_code _importer = _SixMetaPathImporter(__name__) class _MovedItems(_LazyModule): """Lazy loading of moved objects""" __path__ = [] # mark as package _moved_attributes = [ MovedAttribute("cStringIO", "cStringIO", "io", "StringIO"), MovedAttribute("filter", "itertools", "builtins", "ifilter", "filter"), MovedAttribute("filterfalse", "itertools", "itertools", "ifilterfalse", "filterfalse"), MovedAttribute("input", "__builtin__", "builtins", "raw_input", "input"), MovedAttribute("intern", "__builtin__", "sys"), MovedAttribute("map", "itertools", "builtins", "imap", "map"), MovedAttribute("range", "__builtin__", "builtins", "xrange", "range"), MovedAttribute("reload_module", "__builtin__", "imp", "reload"), MovedAttribute("reduce", "__builtin__", "functools"), MovedAttribute("shlex_quote", "pipes", "shlex", "quote"), MovedAttribute("StringIO", "StringIO", "io"), MovedAttribute("UserDict", "UserDict", "collections"), MovedAttribute("UserList", "UserList", "collections"), MovedAttribute("UserString", "UserString", "collections"), MovedAttribute("xrange", "__builtin__", "builtins", "xrange", "range"), MovedAttribute("zip", "itertools", "builtins", "izip", "zip"), MovedAttribute("zip_longest", "itertools", "itertools", "izip_longest", "zip_longest"), MovedModule("builtins", "__builtin__"), MovedModule("configparser", "ConfigParser"), MovedModule("copyreg", "copy_reg"), MovedModule("dbm_gnu", "gdbm", "dbm.gnu"), MovedModule("_dummy_thread", "dummy_thread", "_dummy_thread"), MovedModule("http_cookiejar", "cookielib", "http.cookiejar"), MovedModule("http_cookies", "Cookie", "http.cookies"),