UnicodeDecode error while printing line (#539258)

[Alexander Belchenko]

INADA Naoki пишет:
>>> What is pfmt there?
>> I've looked at your code.
>>
>> fmt = path + ":%s" + eol_marker
>>
>> path is unicode string there, right? So fmt is also unicode string and
>> therefore you get that error. This is wrong: using unicode fmt to put there
>> non-unicode string.
> 
> There is another problem.
> The path may contain "%s" so fmt % (line,) is dangerous.
> 

Right.