GeezerVisonThe World Wide Web, restored to 800 pixels of glory. |
| Home|About|Gaming cabinet|Archives|How it works|Starter sites |
GeezerVison is showing github.com — cpython/Lib/pathlib.py at 3.12 · python/cpython Expand file tree/ Copy pathpathlib.pyMore file actions 1435 lines (1231 loc) · 49.9 KB / Copy pathpathlib.pyFile metadata and controls1435 lines (1231 loc) · 49.9 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 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760 761 762 763 764 765 766 767 768 769 770 771 772 773 774 775 776 777 778 779 780 781 782 783 784 785 786 787 788 789 790 791 792 793 794 795 796 797 798 799 800 801 802 803 804 805 806 807 808 809 810 811 812 813 814 815 816 817 818 819 820 821 822 823 824 825 826 827 828 829 830 831 832 833 834 835 836 837 838 839 840 841 842 843 844 845 846 847 848 849 850 851 852 853 854 855 856 857 858 859 860 861 862 863 864 865 866 867 868 869 870 871 872 873 874 875 876 877 878 879 880 881 882 883 884 885 886 887 888 889 890 891 892 893 894 895 896 897 898 899 900 901 902 903 904 905 906 907 908 909 910 911 912 913 914 915 916 917 918 919 920 921 922 923 924 925 926 927 928 929 930 931 932 933 934 935 936 937 938 939 940 941 942 943 944 945 946 947 948 949 950 951 952 953 954 955 956 957 958 959 960 961 962 963 964 965 966 967 968 969 970 971 972 973 974 975 976 977 978 979 980 981 982 983 984 985 986 987 988 989 990 991 992 993 994 995 996 997 998 999 1000 """Object-oriented filesystem paths. This module provides classes to represent abstract paths and concrete paths with operations that have semantics appropriate for different operating systems. """ import fnmatch import functools import io import ntpath import os import posixpath import re import sys import warnings from _collections_abc import Sequence from errno import ENOENT, ENOTDIR, EBADF, ELOOP from stat import S_ISDIR, S_ISLNK, S_ISREG, S_ISSOCK, S_ISBLK, S_ISCHR, S_ISFIFO from urllib.parse import quote_from_bytes as urlquote_from_bytes __all__ = [ "PurePath", "PurePosixPath", "PureWindowsPath", "Path", "PosixPath", "WindowsPath", ] # # Internals # # Reference for Windows paths can be found at # https://learn.microsoft.com/en-gb/windows/win32/fileio/naming-a-file . _WIN_RESERVED_NAMES = frozenset( {'CON', 'PRN', 'AUX', 'NUL', 'CONIN$', 'CONOUT$'} | {f'COM{c}' for c in '123456789\xb9\xb2\xb3'} | {f'LPT{c}' for c in '123456789\xb9\xb2\xb3'} ) _WINERROR_NOT_READY = 21 # drive exists but is not accessible _WINERROR_INVALID_NAME = 123 # fix for bpo-35306 _WINERROR_CANT_RESOLVE_FILENAME = 1921 # broken symlink pointing to itself # EBADF - guard against macOS `stat` throwing EBADF _IGNORED_ERRNOS = (ENOENT, ENOTDIR, EBADF, ELOOP) _IGNORED_WINERRORS = ( _WINERROR_NOT_READY, _WINERROR_INVALID_NAME, _WINERROR_CANT_RESOLVE_FILENAME) def _ignore_error(exception): return (getattr(exception, 'errno', None) in _IGNORED_ERRNOS or getattr(exception, 'winerror', None) in _IGNORED_WINERRORS) @functools.cache def _is_case_sensitive(flavour): return flavour.normcase('Aa') == 'Aa' # # Globbing helpers # # fnmatch.translate() returns a regular expression that includes a prefix and # a suffix, which enable matching newlines and ensure the end of the string is # matched, respectively. These features are undesirable for our implementation # of PurePatch.match(), which represents path separators as newlines and joins # pattern segments together. As a workaround, we define a slice object that # can remove the prefix and suffix from any translate() result. See the # _compile_pattern_lines() function for more details. _FNMATCH_PREFIX, _FNMATCH_SUFFIX = fnmatch.translate('_').split('_') _FNMATCH_SLICE = slice(len(_FNMATCH_PREFIX), -len(_FNMATCH_SUFFIX)) _SWAP_SEP_AND_NEWLINE = { '/': str.maketrans({'/': '\n', '\n': '/'}), '\\': str.maketrans({'\\': '\n', '\n': '\\'}), } @functools.lru_cache() def _make_selector(pattern_parts, flavour, case_sensitive): pat = pattern_parts[0] if not pat: return _TerminatingSelector() if pat == '**': child_parts_idx = 1 while child_parts_idx < len(pattern_parts) and pattern_parts[child_parts_idx] == '**': child_parts_idx += 1 child_parts = pattern_parts[child_parts_idx:] if '**' in child_parts: cls = _DoubleRecursiveWildcardSelector else: cls = _RecursiveWildcardSelector else: child_parts = pattern_parts[1:] if pat == '..': cls = _ParentSelector elif '**' in pat: raise ValueError("Invalid pattern: '**' can only be an entire path component") else: cls = _WildcardSelector return cls(pat, child_parts, flavour, case_sensitive) @functools.lru_cache(maxsize=256) def _compile_pattern(pat, case_sensitive): flags = re.NOFLAG if case_sensitive else re.IGNORECASE return re.compile(fnmatch.translate(pat), flags).match @functools.lru_cache() def _compile_pattern_lines(pattern_lines, case_sensitive): """Compile the given pattern lines to an `re.Pattern` object. The *pattern_lines* argument is a glob-style pattern (e.g. '*/*.py') with its path separators and newlines swapped (e.g. '*\n*.py`). By using newlines to separate path components, and not setting `re.DOTALL`, we ensure that the `*` wildcard cannot match path separators. The returned `re.Pattern` object may have its `match()` method called to match a complete pattern, or `search()` to match from the right. The argument supplied to these methods must also have its path separators and newlines swapped. """ # Match the start of the path, or just after a path separator parts = ['^'] for part in pattern_lines.splitlines(keepends=True): if part == '*\n': part = r'.+\n' elif part == '*': part = r'.+' else: # Any other component: pass to fnmatch.translate(). We slice off # the common prefix and suffix added by translate() to ensure that # re.DOTALL is not set, and the end of the string not matched, # respectively. With DOTALL not set, '*' wildcards will not match # path separators, because the '.' characters in the pattern will # not match newlines. part = fnmatch.translate(part)[_FNMATCH_SLICE] parts.append(part) # Match the end of the path, always. parts.append(r'\Z') flags = re.MULTILINE if not case_sensitive: flags |= re.IGNORECASE return re.compile(''.join(parts), flags=flags) class _Selector: """A selector matches a specific glob pattern part against the children of a given path.""" def __init__(self, child_parts, flavour, case_sensitive): self.child_parts = child_parts if child_parts: self.successor = _make_selector(child_parts, flavour, case_sensitive) self.dironly = True else: self.successor = _TerminatingSelector() self.dironly = False def select_from(self, parent_path): """Iterate over all child paths of `parent_path` matched by this selector. This can contain parent_path itself.""" path_cls = type(parent_path) scandir = path_cls._scandir if not parent_path.is_dir(): return iter([]) return self._select_from(parent_path, scandir) class _TerminatingSelector: def _select_from(self, parent_path, scandir): yield parent_path class _ParentSelector(_Selector): def __init__(self, name, child_parts, flavour, case_sensitive): _Selector.__init__(self, child_parts, flavour, case_sensitive) def _select_from(self, parent_path, scandir): path = parent_path._make_child_relpath('..') for p in self.successor._select_from(path, scandir): yield p class _WildcardSelector(_Selector): def __init__(self, pat, child_parts, flavour, case_sensitive): _Selector.__init__(self, child_parts, flavour, case_sensitive) if case_sensitive is None: # TODO: evaluate case-sensitivity of each directory in _select_from() case_sensitive = _is_case_sensitive(flavour) self.match = _compile_pattern(pat, case_sensitive) def _select_from(self, parent_path, scandir): try: # We must close the scandir() object before proceeding to # avoid exhausting file descriptors when globbing deep trees. with scandir(parent_path) as scandir_it: entries = list(scandir_it) except OSError: pass else: for entry in entries: if self.dironly: try: if not entry.is_dir(): continue except OSError: continue name = entry.name if self.match(name): path = parent_path._make_child_relpath(name) for p in self.successor._select_from(path, scandir): yield p class _RecursiveWildcardSelector(_Selector): def __init__(self, pat, child_parts, flavour, case_sensitive): _Selector.__init__(self, child_parts, flavour, case_sensitive) def _iterate_directories(self, parent_path): yield parent_path for dirpath, dirnames, _ in parent_path.walk(): for dirname in dirnames: yield dirpath._make_child_relpath(dirname) def _select_from(self, parent_path, scandir): successor_select = self.successor._select_from for starting_point in self._iterate_directories(parent_path): for p in successor_select(starting_point, scandir): yield p class _DoubleRecursiveWildcardSelector(_RecursiveWildcardSelector): """ Like _RecursiveWildcardSelector, but also de-duplicates results from successive selectors. This is necessary if the pattern contains multiple non-adjacent '**' segments. """ def _select_from(self, parent_path, scandir): yielded = set() try: for p in super()._select_from(parent_path, scandir): if p not in yielded: yield p yielded.add(p) finally: yielded.clear() # # Public API # class _PathParents(Sequence): """This object provides sequence-like access to the logical ancestors of a path. Don't try to construct it yourself.""" __slots__ = ('_path', '_drv', '_root', '_tail') def __init__(self, path): self._path = path self._drv = path.drive self._root = path.root self._tail = path._tail def __len__(self): return len(self._tail) def __getitem__(self, idx): if isinstance(idx, slice): return tuple(self[i] for i in range(*idx.indices(len(self)))) if idx >= len(self) or idx < -len(self): raise IndexError(idx) if idx < 0: idx += len(self) return self._path._from_parsed_parts(self._drv, self._root, self._tail[:-idx - 1]) def __repr__(self): return "<{}.parents>".format(type(self._path).__name__) class PurePath(object): """Base class for manipulating paths without I/O. PurePath represents a filesystem path and offers operations which don't imply any actual filesystem I/O. Depending on your system, instantiating a PurePath will return either a PurePosixPath or a PureWindowsPath object. You can also instantiate either of these classes directly, regardless of your system. """ __slots__ = ( # The `_raw_paths` slot stores unnormalized string paths. This is set # in the `__init__()` method. '_raw_paths', # The `_drv`, `_root` and `_tail_cached` slots store parsed and # normalized parts of the path. They are set when any of the `drive`, # `root` or `_tail` properties are accessed for the first time. The # three-part division corresponds to the result of # `os.path.splitroot()`, except that the tail is further split on path # separators (i.e. it is a list of strings), and that the root and # tail are normalized. '_drv', '_root', '_tail_cached', # The `_str` slot stores the string representation of the path, # computed from the drive, root and tail when `__str__()` is called # for the first time. It's used to implement `_str_normcase` '_str', # The `_str_normcase_cached` slot stores the string path with # normalized case. It is set when the `_str_normcase` property is # accessed for the first time. It's used to implement `__eq__()` # `__hash__()`, and `_parts_normcase` '_str_normcase_cached', # The `_parts_normcase_cached` slot stores the case-normalized # string path after splitting on path separators. It's set when the # `_parts_normcase` property is accessed for the first time. It's used # to implement comparison methods like `__lt__()`. '_parts_normcase_cached', # The `_lines_cached` slot stores the string path with path separators # and newlines swapped. This is used to implement `match()`. '_lines_cached', # The `_hash` slot stores the hash of the case-normalized string # path. It's set when `__hash__()` is called for the first time. '_hash', ) _flavour = os.path def __new__(cls, *args, **kwargs): """Construct a PurePath from one or several strings and or existing PurePath objects. The strings and path objects are combined so as to yield a canonicalized path, which is incorporated into the new PurePath object. """ if cls is PurePath: cls = PureWindowsPath if os.name == 'nt' else PurePosixPath return object.__new__(cls) def __reduce__(self): # Using the parts tuple helps share interned path parts # when pickling related paths. return (self.__class__, self.parts) def __init__(self, *args): paths = [] for arg in args: if isinstance(arg, PurePath): if arg._flavour is not self._flavour: # GH-103631: Convert separators for backwards compatibility. paths.append(arg.as_posix()) else: paths.extend(arg._raw_paths) else: try: path = os.fspath(arg) except TypeError: path = arg if not isinstance(path, str): raise TypeError( "argument should be a str or an os.PathLike " "object where __fspath__ returns a str, " f"not {type(path).__name__!r}") paths.append(path) self._raw_paths = paths def with_segments(self, *pathsegments): """Construct a new path object from any number of path-like objects. Subclasses may override this method to customize how new path objects are created from methods like `iterdir()`. """ return type(self)(*pathsegments) @classmethod def _parse_path(cls, path): if not path: return '', '', [] sep = cls._flavour.sep altsep = cls._flavour.altsep if altsep: path = path.replace(altsep, sep) drv, root, rel = cls._flavour.splitroot(path) if not root and drv.startswith(sep) and not drv.endswith(sep): drv_parts = drv.split(sep) if len(drv_parts) == 4 and drv_parts[2] not in '?.': # e.g. //server/share root = sep elif len(drv_parts) == 6: # e.g. //?/unc/server/share root = sep parsed = [sys.intern(str(x)) for x in rel.split(sep) if x and x != '.'] return drv, root, parsed def _load_parts(self): paths = self._raw_paths if len(paths) == 0: path = '' elif len(paths) == 1: path = paths[0] else: path = self._flavour.join(*paths) drv, root, tail = self._parse_path(path) self._drv = drv self._root = root self._tail_cached = tail def _from_parsed_parts(self, drv, root, tail): path_str = self._format_parsed_parts(drv, root, tail) path = self.with_segments(path_str) path._str = path_str or '.' path._drv = drv path._root = root path._tail_cached = tail return path @classmethod def _format_parsed_parts(cls, drv, root, tail): if drv or root: return drv + root + cls._flavour.sep.join(tail) elif tail and cls._flavour.splitdrive(tail[0])[0]: tail = ['.'] + tail return cls._flavour.sep.join(tail) def __str__(self): """Return the string representation of the path, suitable for passing to system calls.""" try: return self._str except AttributeError: self._str = self._format_parsed_parts(self.drive, self.root, self._tail) or '.' return self._str def __fspath__(self): return str(self) def as_posix(self): """Return the string representation of the path with forward (/) slashes.""" f = self._flavour return str(self).replace(f.sep, '/') def __bytes__(self): """Return the bytes representation of the path. This is only recommended to use under Unix.""" return os.fsencode(self) def __repr__(self): return "{}({!r})".format(self.__class__.__name__, self.as_posix()) def as_uri(self): """Return the path as a 'file' URI.""" if not self.is_absolute(): raise ValueError("relative path can't be expressed as a file URI") drive = self.drive if len(drive) == 2 and drive[1] == ':': # It's a path on a local drive => 'file:///c:/a/b' prefix = 'file:///' + drive path = self.as_posix()[2:] elif drive: # It's a path on a network drive => 'file://host/share/a/b' prefix = 'file:' path = self.as_posix() else: # It's a posix path => 'file:///etc/hosts' prefix = 'file://' path = str(self) return prefix + urlquote_from_bytes(os.fsencode(path)) @property def _str_normcase(self): # String with normalized case, for hashing and equality checks try: return self._str_normcase_cached except AttributeError: if _is_case_sensitive(self._flavour): self._str_normcase_cached = str(self) else: self._str_normcase_cached = str(self).lower() return self._str_normcase_cached @property def _parts_normcase(self): # Cached parts with normalized case, for comparisons. try: return self._parts_normcase_cached except AttributeError: self._parts_normcase_cached = self._str_normcase.split(self._flavour.sep) return self._parts_normcase_cached @property def _lines(self): # Path with separators and newlines swapped, for pattern matching. try: return self._lines_cached except AttributeError: path_str = str(self) if path_str == '.': self._lines_cached = '' else: trans = _SWAP_SEP_AND_NEWLINE[self._flavour.sep] self._lines_cached = path_str.translate(trans) return self._lines_cached def __eq__(self, other): if not isinstance(other, PurePath): return NotImplemented return self._str_normcase == other._str_normcase and self._flavour is other._flavour def __hash__(self): try: return self._hash except AttributeError: self._hash = hash(self._str_normcase) return self._hash def __lt__(self, other): if not isinstance(other, PurePath) or self._flavour is not other._flavour: return NotImplemented return self._parts_normcase < other._parts_normcase def __le__(self, other): if not isinstance(other, PurePath) or self._flavour is not other._flavour: return NotImplemented return self._parts_normcase <= other._parts_normcase def __gt__(self, other): if not isinstance(other, PurePath) or self._flavour is not other._flavour: return NotImplemented return self._parts_normcase > other._parts_normcase def __ge__(self, other): if not isinstance(other, PurePath) or self._flavour is not other._flavour: return NotImplemented return self._parts_normcase >= other._parts_normcase @property def drive(self): """The drive prefix (letter or UNC path), if any.""" try: return self._drv except AttributeError: self._load_parts() return self._drv @property def root(self): """The root of the path, if any.""" try: return self._root except AttributeError: self._load_parts() return self._root @property def _tail(self): try: return self._tail_cached except AttributeError: self._load_parts() return self._tail_cached @property def anchor(self): """The concatenation of the drive and root, or ''.""" anchor = self.drive + self.root return anchor @property def name(self): """The final path component, if any.""" tail = self._tail if not tail: return '' return tail[-1] @property def suffix(self): """ The final component's last suffix, if any. This includes the leading period. For example: '.txt' """ name = self.name i = name.rfind('.') if 0 < i < len(name) - 1: return name[i:] else: return '' @property def suffixes(self): """ A list of the final component's suffixes, if any. These include the leading periods. For example: ['.tar', '.gz'] """ name = self.name if name.endswith('.'): return [] name = name.lstrip('.') return ['.' + suffix for suffix in name.split('.')[1:]] @property def stem(self): """The final path component, minus its last suffix.""" name = self.name i = name.rfind('.') if 0 < i < len(name) - 1: return name[:i] else: return name def with_name(self, name): """Return a new path with the file name changed.""" if not self.name: raise ValueError("%r has an empty name" % (self,)) f = self._flavour if not name or f.sep in name or (f.altsep and f.altsep in name) or name == '.': raise ValueError("Invalid name %r" % (name)) return self._from_parsed_parts(self.drive, self.root, self._tail[:-1] + [name]) def with_stem(self, stem): """Return a new path with the stem changed.""" return self.with_name(stem + self.suffix) def with_suffix(self, suffix): """Return a new path with the file suffix changed. If the path has no suffix, add given suffix. If the given suffix is an empty string, remove the suffix from the path. """ f = self._flavour if f.sep in suffix or f.altsep and f.altsep in suffix: raise ValueError("Invalid suffix %r" % (suffix,)) if suffix and not suffix.startswith('.') or suffix == '.': raise ValueError("Invalid suffix %r" % (suffix)) name = self.name if not name: raise ValueError("%r has an empty name" % (self,)) old_suffix = self.suffix if not old_suffix: name = name + suffix else: name = name[:-len(old_suffix)] + suffix return self._from_parsed_parts(self.drive, self.root, self._tail[:-1] + [name]) def relative_to(self, other, /, *_deprecated, walk_up=False): """Return the relative path to another path identified by the passed arguments. If the operation is not possible (because this is not related to the other path), raise ValueError. The *walk_up* parameter controls whether `..` may be used to resolve the path. """ if _deprecated: msg = ("support for supplying more than one positional argument " "to pathlib.PurePath.relative_to() is deprecated and " "scheduled for removal in Python {remove}") warnings._deprecated("pathlib.PurePath.relative_to(*args)", msg, remove=(3, 14)) other = self.with_segments(other, *_deprecated) for step, path in enumerate([other] + list(other.parents)): if self.is_relative_to(path): break elif not walk_up: raise ValueError(f"{str(self)!r} is not in the subpath of {str(other)!r}") elif path.name == '..': raise ValueError(f"'..' segment in {str(other)!r} cannot be walked") else: raise ValueError(f"{str(self)!r} and {str(other)!r} have different anchors") parts = ['..'] * step + self._tail[len(path._tail):] return self.with_segments(*parts) def is_relative_to(self, other, /, *_deprecated): """Return True if the path is relative to another path or False. """ if _deprecated: msg = ("support for supplying more than one argument to " "pathlib.PurePath.is_relative_to() is deprecated and " "scheduled for removal in Python {remove}") warnings._deprecated("pathlib.PurePath.is_relative_to(*args)", msg, remove=(3, 14)) other = self.with_segments(other, *_deprecated) return other == self or other in self.parents @property def parts(self): """An object providing sequence-like access to the components in the filesystem path.""" if self.drive or self.root: return (self.drive + self.root,) + tuple(self._tail) else: return tuple(self._tail) def joinpath(self, *pathsegments): """Combine this path with one or several arguments, and return a new path representing either a subpath (if all arguments are relative paths) or a totally different path (if one of the arguments is anchored). """ return self.with_segments(self, *pathsegments) def __truediv__(self, key): try: return self.joinpath(key) except TypeError: return NotImplemented def __rtruediv__(self, key): try: return self.with_segments(key, self) except TypeError: return NotImplemented @property def parent(self): """The logical parent of the path.""" drv = self.drive root = self.root tail = self._tail if not tail: return self return self._from_parsed_parts(drv, root, tail[:-1]) @property def parents(self): """A sequence of this path's logical parents.""" # The value of this property should not be cached on the path object, # as doing so would introduce a reference cycle. return _PathParents(self) def is_absolute(self): """True if the path is absolute (has both a root and, if applicable, a drive).""" if self._flavour is ntpath: # ntpath.isabs() is defective - see GH-44626. return bool(self.drive and self.root) elif self._flavour is posixpath: # Optimization: work with raw paths on POSIX. for path in self._raw_paths: if path.startswith('/'): return True return False else: return self._flavour.isabs(str(self)) def is_reserved(self): """Return True if the path contains one of the special names reserved by the system, if any.""" if self._flavour is posixpath or not self._tail: return False # NOTE: the rules for reserved names seem somewhat complicated # (e.g. r"..\NUL" is reserved but not r"foo\NUL" if "foo" does not # exist). We err on the side of caution and return True for paths # which are not considered reserved by Windows. if self.drive.startswith('\\\\'): # UNC paths are never reserved. return False name = self._tail[-1].partition('.')[0].partition(':')[0].rstrip(' ') return name.upper() in _WIN_RESERVED_NAMES def match(self, path_pattern, *, case_sensitive=None): """ Return True if this path matches the given pattern. """ if not isinstance(path_pattern, PurePath): path_pattern = self.with_segments(path_pattern) if case_sensitive is None: case_sensitive = _is_case_sensitive(self._flavour) pattern = _compile_pattern_lines(path_pattern._lines, case_sensitive) if path_pattern.drive or path_pattern.root: return pattern.match(self._lines) is not None elif path_pattern._tail: return pattern.search(self._lines) is not None else: raise ValueError("empty pattern") # Can't subclass os.PathLike from PurePath and keep the constructor # optimizations in PurePath.__slots__. os.PathLike.register(PurePath) class PurePosixPath(PurePath): """PurePath subclass for non-Windows systems. On a POSIX system, instantiating a PurePath should return this object. However, you can also instantiate it directly on any system. """ _flavour = posixpath __slots__ = () class PureWindowsPath(PurePath): """PurePath subclass for Windows systems. On a Windows system, instantiating a PurePath should return this object. However, you can also instantiate it directly on any system. """ _flavour = ntpath __slots__ = () # Filesystem-accessing classes class Path(PurePath): """PurePath subclass that can make system calls. Path represents a filesystem path but unlike PurePath, also offers methods to do system calls on path objects. Depending on your system, instantiating a Path will return either a PosixPath or a WindowsPath object. You can also instantiate a PosixPath or WindowsPath directly, but cannot instantiate a WindowsPath on a POSIX system or vice versa. """ __slots__ = () def stat(self, *, follow_symlinks=True): """ Return the result of the stat() system call on this path, like os.stat() does. """ return os.stat(self, follow_symlinks=follow_symlinks) def lstat(self): """ Like stat(), except if the path points to a symlink, the symlink's status information is returned, rather than its target's. """ return self.stat(follow_symlinks=False) # Convenience functions for querying the stat results def exists(self, *, follow_symlinks=True): """ Whether this path exists. This method normally follows symlinks; to check whether a symlink exists, add the argument follow_symlinks=False. """ try: self.stat(follow_symlinks=follow_symlinks) except OSError as e: if not _ignore_error(e): raise return False except ValueError: # Non-encodable path return False return True def is_dir(self): """ Whether this path is a directory. """ try: return S_ISDIR(self.stat().st_mode) except OSError as e: if not _ignore_error(e): raise # Path doesn't exist or is a broken symlink # (see http://web.archive.org/web/20200623061726/https://bitbucket.org/pitrou/pathlib/issues/12/ ) return False except ValueError: # Non-encodable path return False def is_file(self): """ Whether this path is a regular file (also True for symlinks pointing to regular files). """ try: return S_ISREG(self.stat().st_mode) except OSError as e: if not _ignore_error(e): raise # Path doesn't exist or is a broken symlink # (see http://web.archive.org/web/20200623061726/https://bitbucket.org/pitrou/pathlib/issues/12/ ) return False except ValueError: # Non-encodable path return False def is_mount(self): """ Check if this path is a mount point """ return self._flavour.ismount(self) def is_symlink(self): """ Whether this path is a symbolic link. """ try: return S_ISLNK(self.lstat().st_mode) except OSError as e: if not _ignore_error(e): raise # Path doesn't exist return False except ValueError: # Non-encodable path return False def is_junction(self): """ Whether this path is a junction. """ return self._flavour.isjunction(self) def is_block_device(self): """ Whether this path is a block device. """ try: return S_ISBLK(self.stat().st_mode) except OSError as e: if not _ignore_error(e): raise # Path doesn't exist or is a broken symlink # (see http://web.archive.org/web/20200623061726/https://bitbucket.org/pitrou/pathlib/issues/12/ ) return False except ValueError: # Non-encodable path return False def is_char_device(self): """ Whether this path is a character device. """ try: return S_ISCHR(self.stat().st_mode) except OSError as e: if not _ignore_error(e): raise # Path doesn't exist or is a broken symlink # (see http://web.archive.org/web/20200623061726/https://bitbucket.org/pitrou/pathlib/issues/12/ ) return False except ValueError: # Non-encodable path return False def is_fifo(self): """ Whether this path is a FIFO. """ try: return S_ISFIFO(self.stat().st_mode) except OSError as e: if not _ignore_error(e): raise # Path doesn't exist or is a broken symlink # (see http://web.archive.org/web/20200623061726/https://bitbucket.org/pitrou/pathlib/issues/12/ ) return False except ValueError: # Non-encodable path return False def is_socket(self): """ Whether this path is a socket. """ try: return S_ISSOCK(self.stat().st_mode) except OSError as e: if not _ignore_error(e): raise # Path doesn't exist or is a broken symlink # (see http://web.archive.org/web/20200623061726/https://bitbucket.org/pitrou/pathlib/issues/12/ ) return False except ValueError: # Non-encodable path return False def samefile(self, other_path): """Return whether other_path is the same or not as this file (as returned by os.path.samefile()). """ st = self.stat() try: other_st = other_path.stat() |
| You are visitor 01402503 — GeezerVison does not store the pages you look up. Best viewed with Netscape Navigator 4.7 or Internet Explorer 6 at 800×600. No cookies required. |