After the documentation was rearranged by Issue 23342 (revision f0a00ee094ff), the “older high-level APIs” lost the paragraphs that said “The arguments shown above are merely the most common ones”. Given the limited signatures of call(), check_call() and check_output(), it is now too easy to assume that these functions do not accept the less-common Popen arguments.

Also, in that issue I discovered an awkward edge case: there is actually no default value for the check_output() input parameter. Without an “input” parameter, the subprocess inherits its parent’s input, but input=None is equivalent to passing an empty string of the correct type.

This patch hopefully fixes both problems.

Thanks, this looks good to me.

LGTM, too. I just left a comment on Rietveld.

Thanks!

New patch dropping the [, input] parameter from the signature. I also removed the bit about *stdout*, since it should be obvious from the equivalent run() call given, and equally applies to *check*.

New changeset bedff93d778d by Berker Peksag in branch '3.5':
Issue #24420: Fix documentation regression introduced by f0a00ee094ff.
https://hg.python.org/cpython/rev/bedff93d778d

New changeset 9b17df697a3c by Berker Peksag in branch 'default':
Issue #24420: Fix documentation regression introduced by f0a00ee094ff.
https://hg.python.org/cpython/rev/9b17df697a3c

Thanks Martin.