Python Tarfile And Excludes

This is an excerpt from Python's documentation: If exclude is given it must be a function that takes one filename argument and returns a boolean value. Depending on this value t

Solution 1:

If exclude is given it must be a function that takes one filename argument and returns a boolean value. Depending on this value the respective file is either excluded (True) or added (False).

For example, if you wanted to exclude all filenames beginning with the letter 'a', you'd do something like...

defexclude_function(filename):
    if filename.startswith('a'):
        returnTrueelse:
        returnFalse

mytarfile.add(..., exclude=exclude_function)

For your case, you'd want something like...

EXCLUDE_FILES = ['README', 'INSTALL', '.cvsignore']

defexclude_function(filename):
    if filename in EXCLUDE_FILES:
        returnTrueelse:
        returnFalse

mytarfile.add(..., exclude=exclude_function)

...which can be reduced to...

EXCLUDE_FILES = ['README', 'INSTALL', '.cvsignore']

mytarfile.add(..., exclude=lambda x: x in EXCLUDE_FILES)

Update

TBH, I wouldn't worry too much about the deprecation warning, but if you want to use the new filter parameter, you'd need something like...

EXCLUDE_FILES = ['README', 'INSTALL', '.cvsignore']

deffilter_function(tarinfo):
    if tarinfo.name in EXCLUDE_FILES:
        returnNoneelse:
        return tarinfo

mytarfile.add(..., filter=filter_function)

...which can be reduced to...

EXCLUDE_FILES = ['README', 'INSTALL', '.cvsignore']

mytarfile.add(..., filter=lambda x: Noneif x.name in EXCLUDE_FILES else x)