New submission from Nick Coghlan:
A problem we're starting to see on distutils-sig is folks trying to type pip
commands into the Python REPL rather than their system shell, and getting
cryptic syntax errors back:
>>> pip install requests
File "<stdin>", line 1
pip install requests
^
SyntaxError: invalid syntax
>>> python -m pip install requests
File "<stdin>", line 1
python -m pip install requests
^
SyntaxError: invalid syntax
This may be amenable to a similar solution to the one we used to give a custom
error message for "print ":
>>> print foo
File "<stdin>", line 1
print foo
^
SyntaxError: Missing parentheses in call to 'print'
That code currently checks for "print " and "exec ", so it would be a matter of
adding another special case that looked for "pip install " appearing anywhere
in the string that's failing to compile (it can't be limited to the start as it
may be an attempt to invoke pip via "-m")
----------
messages: 276373
nosy: ncoghlan
priority: normal
severity: normal
status: open
title: Attempt to give better errors for shell commands typed into the REPL
type: enhancement
versions: Python 3.6, Python 3.7
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Python tracker <rep...@bugs.python.org>
<http://bugs.python.org/issue28140>
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