[docs] [issue29072] the message of help(os.environ.setdefault) have some error

[劉劍峰]

New submission from 劉劍峰:

the message `D.setdefault(k[,d])', compiler inform SyntaxError: invalid syntax. I think that it woulld be D.setdefault([k, d]).

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assignee: docs at python
components: Documentation
messages: 284015
nosy: docs at python, 劉劍峰
priority: normal
severity: normal
status: open
title: the message of help(os.environ.setdefault) have some error
versions: Python 3.5

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue29072>
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