擅长:python、mysql、java
<p>我就是这样解决的:</p>
<pre><code>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)
</code></pre>