# `glob` --- Unix style pathname pattern expansion

Source code: Lib/glob.py

The `glob` module finds all the pathnames matching a specified pattern according to the rules used by the Unix shell, although results are returned in arbitrary order. No tilde expansion is done, but `*`, `?`, and character ranges expressed with `[]` will be correctly matched. This is done by using the `os.scandir()` and `fnmatch.fnmatch()` functions in concert, and not by actually invoking a subshell. Note that unlike `fnmatch.fnmatch()`, `glob` treats filenames beginning with a dot (`.`) as special cases. (For tilde and shell variable expansion, use `os.path.expanduser()` and `os.path.expandvars()`.)

For a literal match, wrap the meta-characters in brackets. For example, `'[?]'` matches the character `'?'`.

也參考

The `pathlib` module offers high-level path objects.

`glob.``glob`(pathname, *, recursive=False)

  Return a possibly-empty list of path names that match pathname, which must be a string containing a path specification. pathname can be either absolute (like `/usr/src/Python-1.5/Makefile`) or relative (like `../../Tools/*/*.gif`), and can contain shell-style wildcards. Broken symlinks are included in the results (as in the shell). Whether or not the results are sorted depends on the file system.

  If recursive is true, the pattern "`**`" will match any files and zero or more directories and subdirectories. If the pattern is followed by an `os.sep`, only directories and subdirectories match.

  備註

  Using the "`**`" pattern in large directory trees may consume an inordinate amount of time.

  3.5 版更變: Support for recursive globs using "`**`".

`glob.``iglob`(pathname, *, recursive=False)

  Return an iterator which yields the same values as `glob()` without actually storing them all simultaneously.

`glob.``escape`(pathname)

  Escape all special characters (`'?'`, `'*'` and `'['`). This is useful if you want to match an arbitrary literal string that may have special characters in it. Special characters in drive/UNC sharepoints are not escaped, e.g. on Windows `escape('//?/c:/Quo vadis?.txt')` returns `'//?/c:/Quo vadis[?].txt'`.

  3.4 版新加入.

For example, consider a directory containing the following files: `1.gif`, `2.txt`, `card.gif` and a subdirectory `sub` which contains only the file `3.txt`. `glob()` will produce the following results. Notice how any leading components of the path are preserved.

    >>> import glob
    >>> glob.glob('./[0-9].*')
    ['./1.gif', './2.txt']
    >>> glob.glob('*.gif')
    ['1.gif', 'card.gif']
    >>> glob.glob('?.gif')
    ['1.gif']
    >>> glob.glob('**/*.txt', recursive=True)
    ['2.txt', 'sub/3.txt']
    >>> glob.glob('./**/', recursive=True)
    ['./', './sub/']

If the directory contains files starting with `.` they won't be matched by default. For example, consider a directory containing `card.gif` and `.card.gif`:

    >>> import glob
    >>> glob.glob('*.gif')
    ['card.gif']
    >>> glob.glob('.c*')
    ['.card.gif']

也參考

Module `fnmatch`
  Shell-style filename (not path) expansion