Greg Ward added the comment:
The original reproduction I posted was incorrect -- it makes difflib look worse
than it should. (I passed strings rather than lists of strings.) Here is a more
accurate version:
>>> import difflib
>>> a = [b'hello']
>>> b = [b'hello!']
>>> '\n'.join(line for line in difflib.unified_diff(a, b))
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "<stdin>", line 1, in <genexpr>
File "/home/greg/src/cpython/3.3/Lib/difflib.py", line 1223, in unified_diff
yield '-' + line
TypeError: Can't convert 'bytes' object to str implicitly
So it still crashes, but the exception makes it pretty clear what the problem
is.
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Python tracker <rep...@bugs.python.org>
<http://bugs.python.org/issue17445>
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