How to print the comparison of two multiline strings in unified diff format?

Question

Do you know any library that will help doing that?

I would write a function that prints the differences between two multiline strings in the unified diff format. Somethi

Answer 1

This is how I solved:

def _unidiff_output(expected, actual):
    """
    Helper function. Returns a string containing the unified diff of two multiline strings.
    """

    import difflib
    expected=expected.splitlines(1)
    actual=actual.splitlines(1)

    diff=difflib.unified_diff(expected, actual)

    return ''.join(diff)