file.py 文件源码

def has_same_content_as(self, other):
        logger.debug('File.has_same_content: %s %s', self, other)
        if os.path.isdir(self.path) or os.path.isdir(other.path):
            return False
        # try comparing small files directly first
        try:
            my_size = os.path.getsize(self.path)
            other_size = os.path.getsize(other.path)
        except OSError:
            # files not readable (e.g. broken symlinks) or something else,
            # just assume they are different
            return False
        if my_size == other_size and my_size <= SMALL_FILE_THRESHOLD:
            try:
                with profile('command', 'cmp (internal)'):
                    with open(self.path, 'rb') as file1, open(other.path, 'rb') as file2:
                        return file1.read() == file2.read()
            except OSError:
                # one or both files could not be opened for some reason,
                # assume they are different
                return False

        return self.cmp_external(other)