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gh-102541: Hide traceback in help prompt #102614

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Merged
merged 2 commits into from
Jun 14, 2023
Merged

gh-102541: Hide traceback in help prompt #102614

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gh-102541: Hide traceback in help prompt
Eclips4 Mar 11, 2023
6bfd8a2
Merge branch 'main' into issue-102541
Eclips4 Jun 14, 2023
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21 changes: 13 additions & 8 deletions Lib/pydoc.py
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Original file line number Diff line number Diff line change
Expand Up @@ -1780,10 +1780,15 @@ def render_doc(thing, title='Python Library Documentation: %s', forceload=0,
return title % desc + '\n\n' + renderer.document(object, name)

def doc(thing, title='Python Library Documentation: %s', forceload=0,
output=None):
output=None, is_cli=False):
"""Display text documentation, given an object or a path to an object."""
if output is None:
pager(render_doc(thing, title, forceload))
try:
pager(render_doc(thing, title, forceload))
except ImportError as exc:
if is_cli:
raise
print(exc)
else:
output.write(render_doc(thing, title, forceload, plaintext))

Expand Down Expand Up @@ -2044,7 +2049,7 @@ def getline(self, prompt):
self.output.flush()
return self.input.readline()

def help(self, request):
def help(self, request, is_cli=False):
if isinstance(request, str):
request = request.strip()
if request == 'keywords': self.listkeywords()
Expand All @@ -2056,13 +2061,13 @@ def help(self, request):
elif request in self.symbols: self.showsymbol(request)
elif request in ['True', 'False', 'None']:
# special case these keywords since they are objects too
doc(eval(request), 'Help on %s:')
doc(eval(request), 'Help on %s:', is_cli=is_cli)
elif request in self.keywords: self.showtopic(request)
elif request in self.topics: self.showtopic(request)
elif request: doc(request, 'Help on %s:', output=self._output)
else: doc(str, 'Help on %s:', output=self._output)
elif request: doc(request, 'Help on %s:', output=self._output, is_cli=is_cli)
else: doc(str, 'Help on %s:', output=self._output, is_cli=is_cli)
elif isinstance(request, Helper): self()
else: doc(request, 'Help on %s:', output=self._output)
else: doc(request, 'Help on %s:', output=self._output, is_cli=is_cli)
self.output.write('\n')

def intro(self):
Expand Down Expand Up @@ -2800,7 +2805,7 @@ class BadUsage(Exception): pass
else:
writedoc(arg)
else:
help.help(arg)
help.help(arg, is_cli=True)
except (ImportError, ErrorDuringImport) as value:
print(value)
sys.exit(1)
Expand Down
1 change: 1 addition & 0 deletions Misc/NEWS.d/next/Library/2023-03-12-01-17-15.gh-issue-102541.LK1adc.rst
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@@ -0,0 +1 @@
Hide traceback in :func:`help` prompt, when import failed.