STINNER Victor added the comment:

heapq documentation contains "François" which is not encodable to ASCII. When 
using LC_ALL=C, the locale encoding is ASCII (at least on Linux). It's not easy 
to specify a different error handler globally in pydoc, different functions are 
used and child processes are spawned. The subprocess module doesn't allow to 
specify an error handler different than strict (see #6135).

I propose pydoc_encoding.patch which escapes manually non-encodable characters. 
I chose sys.getfilesystemencoding(), I'm not sure that it's the encoding used 
for all cases of getpager() on all platforms. For example, on Windows, 
sys.getfilesystemencoding() is the ANSI code page, whereas sys.stdout.encoding 
is the OEM code page.

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keywords: +patch
Added file: http://bugs.python.org/file35132/pydoc_encoding.patch

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<http://bugs.python.org/issue21398>
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