gh-102541: Fix Helper.help("mod") for non-existent mod (#105934)

If the output arg to Helper() is a stream rather than the default None, which means 'page to stdout', the ImportError from pydoc.resolve is currently not caught in pydoc.doc. The same error is caught when output is None.
---------

Co-authored-by: Terry Jan Reedy <tjreedy@udel.edu>
This commit is contained in:
Kirill Podoprigora 2023-07-02 01:46:06 +03:00 committed by GitHub
parent 46d77610fc
commit 0530f4f646
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3 changed files with 13 additions and 1 deletions

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@ -1790,7 +1790,11 @@ def doc(thing, title='Python Library Documentation: %s', forceload=0,
raise
print(exc)
else:
output.write(render_doc(thing, title, forceload, plaintext))
try:
s = render_doc(thing, title, forceload, plaintext)
except ImportError as exc:
s = str(exc)
output.write(s)
def writedoc(thing, forceload=0):
"""Write HTML documentation to a file in the current directory."""