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GeezerVison is showing github.com — vscode-python/pythonFiles/jedi/_compatibility.py at master · feimeng115/vscode-python Expand file tree/ Copy path_compatibility.pyMore file actions 515 lines (414 loc) · 16.1 KB / Copy path_compatibility.pyFile metadata and controls515 lines (414 loc) · 16.1 KB 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 """ To ensure compatibility from Python ``2.7`` - ``3.x``, a module has been created. Clearly there is huge need to use conforming syntax. """ import binascii import errno import sys import os import re import pkgutil import warnings import inspect import subprocess try: import importlib except ImportError: pass is_py3 = sys.version_info[0] >= 3 is_py33 = is_py3 and sys.version_info[1] >= 3 is_py34 = is_py3 and sys.version_info[1] >= 4 is_py35 = is_py3 and sys.version_info[1] >= 5 py_version = int(str(sys.version_info[0]) + str(sys.version_info[1])) class DummyFile(object): def __init__(self, loader, string): self.loader = loader self.string = string def read(self): return self.loader.get_source(self.string) def close(self): del self.loader def find_module_py34(string, path=None, full_name=None): spec = None loader = None spec = importlib.machinery.PathFinder.find_spec(string, path) if spec is not None: # We try to disambiguate implicit namespace pkgs with non implicit namespace pkgs if not spec.has_location: full_name = string if not path else full_name implicit_ns_info = ImplicitNSInfo(full_name, spec.submodule_search_locations._path) return None, implicit_ns_info, False # we have found the tail end of the dotted path loader = spec.loader return find_module_py33(string, path, loader) def find_module_py33(string, path=None, loader=None, full_name=None): loader = loader or importlib.machinery.PathFinder.find_module(string, path) if loader is None and path is None: # Fallback to find builtins try: with warnings.catch_warnings(record=True): # Mute "DeprecationWarning: Use importlib.util.find_spec() # instead." While we should replace that in the future, it's # probably good to wait until we deprecate Python 3.3, since # it was added in Python 3.4 and find_loader hasn't been # removed in 3.6. loader = importlib.find_loader(string) except ValueError as e: # See #491. Importlib might raise a ValueError, to avoid this, we # just raise an ImportError to fix the issue. raise ImportError("Originally " + repr(e)) if loader is None: raise ImportError("Couldn't find a loader for {}".format(string)) try: is_package = loader.is_package(string) if is_package: if hasattr(loader, 'path'): module_path = os.path.dirname(loader.path) else: # At least zipimporter does not have path attribute module_path = os.path.dirname(loader.get_filename(string)) if hasattr(loader, 'archive'): module_file = DummyFile(loader, string) else: module_file = None else: module_path = loader.get_filename(string) module_file = DummyFile(loader, string) except AttributeError: # ExtensionLoader has not attribute get_filename, instead it has a # path attribute that we can use to retrieve the module path try: module_path = loader.path module_file = DummyFile(loader, string) except AttributeError: module_path = string module_file = None finally: is_package = False if hasattr(loader, 'archive'): module_path = loader.archive return module_file, module_path, is_package def find_module_pre_py33(string, path=None, full_name=None): # This import is here, because in other places it will raise a # DeprecationWarning. import imp try: module_file, module_path, description = imp.find_module(string, path) module_type = description[2] return module_file, module_path, module_type is imp.PKG_DIRECTORY except ImportError: pass if path is None: path = sys.path for item in path: loader = pkgutil.get_importer(item) if loader: try: loader = loader.find_module(string) if loader: is_package = loader.is_package(string) is_archive = hasattr(loader, 'archive') module_path = loader.get_filename(string) if is_package: module_path = os.path.dirname(module_path) if is_archive: module_path = loader.archive file = None if not is_package or is_archive: file = DummyFile(loader, string) return file, module_path, is_package except ImportError: pass raise ImportError("No module named {}".format(string)) find_module = find_module_py33 if is_py33 else find_module_pre_py33 find_module = find_module_py34 if is_py34 else find_module find_module.__doc__ = """ Provides information about a module. This function isolates the differences in importing libraries introduced with python 3.3 on; it gets a module name and optionally a path. It will return a tuple containin an open file for the module (if not builtin), the filename or the name of the module if it is a builtin one and a boolean indicating if the module is contained in a package. """ def _iter_modules(paths, prefix=''): # Copy of pkgutil.iter_modules adapted to work with namespaces for path in paths: importer = pkgutil.get_importer(path) if not isinstance(importer, importlib.machinery.FileFinder): # We're only modifying the case for FileFinder. All the other cases # still need to be checked (like zip-importing). Do this by just # calling the pkgutil version. for mod_info in pkgutil.iter_modules([path], prefix): yield mod_info continue # START COPY OF pkutils._iter_file_finder_modules. if importer.path is None or not os.path.isdir(importer.path): return yielded = {} try: filenames = os.listdir(importer.path) except OSError: # ignore unreadable directories like import does filenames = [] filenames.sort() # handle packages before same-named modules for fn in filenames: modname = inspect.getmodulename(fn) if modname == '__init__' or modname in yielded: continue # jedi addition: Avoid traversing special directories if fn.startswith('.') or fn == '__pycache__': continue path = os.path.join(importer.path, fn) ispkg = False if not modname and os.path.isdir(path) and '.' not in fn: modname = fn # A few jedi modifications: Don't check if there's an # __init__.py try: os.listdir(path) except OSError: # ignore unreadable directories like import does continue ispkg = True if modname and '.' not in modname: yielded[modname] = 1 yield importer, prefix + modname, ispkg # END COPY iter_modules = _iter_modules if py_version >= 34 else pkgutil.iter_modules class ImplicitNSInfo(object): """Stores information returned from an implicit namespace spec""" def __init__(self, name, paths): self.name = name self.paths = paths if is_py3: all_suffixes = importlib.machinery.all_suffixes else: def all_suffixes(): # Is deprecated and raises a warning in Python 3.6. import imp return [suffix for suffix, _, _ in imp.get_suffixes()] # unicode function try: unicode = unicode except NameError: unicode = str # re-raise function if is_py3: def reraise(exception, traceback): raise exception.with_traceback(traceback) else: eval(compile(""" def reraise(exception, traceback): raise exception, None, traceback """, 'blub', 'exec')) reraise.__doc__ = """ Re-raise `exception` with a `traceback` object. Usage:: reraise(Exception, sys.exc_info()[2]) """ class Python3Method(object): def __init__(self, func): self.func = func def __get__(self, obj, objtype): if obj is None: return lambda *args, **kwargs: self.func(*args, **kwargs) else: return lambda *args, **kwargs: self.func(obj, *args, **kwargs) def use_metaclass(meta, *bases): """ Create a class with a metaclass. """ if not bases: bases = (object,) return meta("Py2CompatibilityMetaClass", bases, {}) try: encoding = sys.stdout.encoding if encoding is None: encoding = 'utf-8' except AttributeError: encoding = 'ascii' def u(string, errors='strict'): """Cast to unicode DAMMIT! Written because Python2 repr always implicitly casts to a string, so we have to cast back to a unicode (and we now that we always deal with valid unicode, because we check that in the beginning). """ if isinstance(string, bytes): return unicode(string, encoding='UTF-8', errors=errors) return string def cast_path(obj): """ Take a bytes or str path and cast it to unicode. Apparently it is perfectly fine to pass both byte and unicode objects into the sys.path. This probably means that byte paths are normal at other places as well. Since this just really complicates everything and Python 2.7 will be EOL soon anyway, just go with always strings. """ return u(obj, errors='replace') def force_unicode(obj): # Intentionally don't mix those two up, because those two code paths might # be different in the future (maybe windows?). return cast_path(obj) try: import builtins # module name in python 3 except ImportError: import __builtin__ as builtins import ast def literal_eval(string): return ast.literal_eval(string) try: from itertools import zip_longest except ImportError: from itertools import izip_longest as zip_longest # Python 2 try: FileNotFoundError = FileNotFoundError except NameError: FileNotFoundError = IOError try: NotADirectoryError = NotADirectoryError except NameError: NotADirectoryError = IOError def no_unicode_pprint(dct): """ Python 2/3 dict __repr__ may be different, because of unicode differens (with or without a `u` prefix). Normally in doctests we could use `pprint` to sort dicts and check for equality, but here we have to write a separate function to do that. """ import pprint s = pprint.pformat(dct) print(re.sub("u'", "'", s)) def print_to_stderr(*args): if is_py3: eval("print(*args, file=sys.stderr)") else: print >> sys.stderr, args def utf8_repr(func): """ ``__repr__`` methods in Python 2 don't allow unicode objects to be returned. Therefore cast them to utf-8 bytes in this decorator. """ def wrapper(self): result = func(self) if isinstance(result, unicode): return result.encode('utf-8') else: return result if is_py3: return func else: return wrapper if is_py3: import queue else: import Queue as queue import pickle if sys.version_info[:2] == (3, 3): """ Monkeypatch the unpickler in Python 3.3. This is needed, because the argument `encoding='bytes'` is not supported in 3.3, but badly needed to communicate with Python 2. """ class NewUnpickler(pickle._Unpickler): dispatch = dict(pickle._Unpickler.dispatch) def _decode_string(self, value): # Used to allow strings from Python 2 to be decoded either as # bytes or Unicode strings. This should be used only with the # STRING, BINSTRING and SHORT_BINSTRING opcodes. if self.encoding == "bytes": return value else: return value.decode(self.encoding, self.errors) def load_string(self): data = self.readline()[:-1] # Strip outermost quotes if len(data) >= 2 and data[0] == data[-1] and data[0] in b'"\'': data = data[1:-1] else: raise pickle.UnpicklingError("the STRING opcode argument must be quoted") self.append(self._decode_string(pickle.codecs.escape_decode(data)[0])) dispatch[pickle.STRING[0]] = load_string def load_binstring(self): # Deprecated BINSTRING uses signed 32-bit length len, = pickle.struct.unpack('<i', self.read(4)) if len < 0: raise pickle.UnpicklingError("BINSTRING pickle has negative byte count") data = self.read(len) self.append(self._decode_string(data)) dispatch[pickle.BINSTRING[0]] = load_binstring def load_short_binstring(self): len = self.read(1)[0] data = self.read(len) self.append(self._decode_string(data)) dispatch[pickle.SHORT_BINSTRING[0]] = load_short_binstring def load(file, fix_imports=True, encoding="ASCII", errors="strict"): return NewUnpickler(file, fix_imports=fix_imports, encoding=encoding, errors=errors).load() def loads(s, fix_imports=True, encoding="ASCII", errors="strict"): if isinstance(s, str): raise TypeError("Can't load pickle from unicode string") file = pickle.io.BytesIO(s) return NewUnpickler(file, fix_imports=fix_imports, encoding=encoding, errors=errors).load() pickle.Unpickler = NewUnpickler pickle.load = load pickle.loads = loads _PICKLE_PROTOCOL = 2 is_windows = sys.platform == 'win32' # The Windows shell on Python 2 consumes all control characters (below 32) and expand on # all Python versions \n to \r\n. # pickle starting from protocol version 1 uses binary data, which could not be escaped by # any normal unicode encoder. Therefore, the only bytes encoder which doesn't produce # control characters is binascii.hexlify. def pickle_load(file): if is_windows: try: data = file.readline() data = binascii.unhexlify(data.strip()) if is_py3: return pickle.loads(data, encoding='bytes') else: return pickle.loads(data) # Python on Windows don't throw EOF errors for pipes. So reraise them with # the correct type, which is cought upwards. except OSError: raise EOFError() else: if is_py3: return pickle.load(file, encoding='bytes') else: return pickle.load(file) def pickle_dump(data, file): if is_windows: try: data = pickle.dumps(data, protocol=_PICKLE_PROTOCOL) data = binascii.hexlify(data) file.write(data) file.write(b'\n') # On Python 3.3 flush throws sometimes an error even if the two file writes # should done it already before. This could be also computer / speed depending. file.flush() # Python on Windows don't throw EPIPE errors for pipes. So reraise them with # the correct type and error number. except OSError: raise IOError(errno.EPIPE, "Broken pipe") else: pickle.dump(data, file, protocol=_PICKLE_PROTOCOL) file.flush() try: from inspect import Parameter except ImportError: class Parameter(object): POSITIONAL_ONLY = object() POSITIONAL_OR_KEYWORD = object() VAR_POSITIONAL = object() KEYWORD_ONLY = object() VAR_KEYWORD = object() class GeneralizedPopen(subprocess.Popen): def __init__(self, *args, **kwargs): if os.name == 'nt': try: # Was introduced in Python 3.7. CREATE_NO_WINDOW = subprocess.CREATE_NO_WINDOW except AttributeError: CREATE_NO_WINDOW = 0x08000000 kwargs['creationflags'] = CREATE_NO_WINDOW super(GeneralizedPopen, self).__init__(*args, **kwargs) |
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