<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def assert_files_same(path1, path2):
 # type: (str, str) -> None """Asserts that two files are the same and returns delta using -, ?, + format if not Args: path1 (str):
 Path to first file path2 (str):
 Path to second file Returns: None """

    difflines = compare_files(path1, path2)
    assert len(difflines) == 0, ''.join(['\n'] + difflines)