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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def isvalid(path, access=None, extensions=None, filetype=None, minsize=None):
 """Check whether file meets access, extension, size, and type criteria."""

    return ((access is None or os.access(path, access)) and
            (extensions is None or checkext(path, extensions)) and
            (((filetype == 'all' and os.path.exists(path)) or
              (filetype == 'dir' and os.path.isdir(path)) or
              (filetype == 'file' and os.path.isfile(path))) or
             filetype is None) and
            (minsize is None or (not os.path.isfile(path) or
                                 os.path.getsize(path) > minsize)))