Python glob fnmatch for file lookup operations

Reference:

Http://python.jobbole.com/81552/:Python Module Learning: Glob file path Lookup

A handy file name Operation module in Http://blog.csdn.net/suiyunonghen/article/details/4517103:python Glob

https://docs.python.org/2/library/glob.html:10.7. Glob-unix Style pathname Pattern expansion

https://docs.python.org/2/library/fnmatch.html#module-fnmatch:10.8. Fnmatch-unix filename pattern Matching

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Distribution of test set files:

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I glob source location:/usr/lib/python2.7/glob.py

Function Name: Glob

Parameter name: pathname-path name (can use relative or absolute path)

Function: Returns a list that stores all file paths that match your parameter name (when you use a relative path, the file path is a relative path; When you use an absolute path, the file path is the absolute path)

Note: The scope of the lookup is only in the directory where the path name resides

The pathname must use a wildcard character, but only three (*/?/[]). * represents all files,? represents a character, [] denotes the number of characters that you want to match (for example, [0-9] indicates a match number 0-9)

Find all files and directories in the current directory:

Note: It is known that only the path is provided and no results are obtained

To find the TXT file in the current directory:

There are three levels of known test sets

Find all txt files on the second tier:

The function Iglob (pathname) function is similar to Glob, except that Iglob returns an iterator. See the source, two functions are actually exactly the same

def glob (pathname): "" "    Return a list of paths matching a pathname pattern.    The pattern may contain simple shell-style wildcards a la    fnmatch. However, unlike Fnmatch, filenames starting with a    dot is special cases that is not matched by ' * ' and '? '    Patterns.    "" " Return list (Iglob (pathname))

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I fnmatch source location:/usr/lib/python2.7/fnmatch.py

A total of four functions:

Function Filter:

Returns a subset of the compliant-mode pat in the list names

function Fnmatch

Test whether name conforms to Pat's pattern

The PAT format conforms to the UNIX text type:

*-Indicates all

?-Represents a single character

[seq]-denotes a character that conforms to a sequence within []

[!seq]-indicates a character that does not conform to the sequence within []

Check the source code, the function is the same as Fnmatcncase:

def fnmatch (name, Pat): "" "    Test whether FILENAME matches PATTERN.    Patterns is Unix shell style:    *       matches everything    ?       Matches any single character    [seq]   matches any character in Seq    [!seq]  matches no char    not in seq an Initial period in FILENAME was not special.    Both FILENAME and PATTERN are first case-normalized    if the operating system requires it.    If you don ' t want this, use Fnmatchcase (FILENAME, PATTERN).    "" " Import OS    name = os.path.normcase (name)    Pat = os.path.normcase (PAT)    return Fnmatchcase (name, Pat)

function Fnmatchcase

No normalization parameters, just determine if the file name matches the pattern character, including case

Note: Parameters are a single string

Python glob fnmatch for file lookup operations