[PYTHON] 生成python doc

python -m robot.libdoc LIBS/COM_MSG/msg_command.py LIBS/COM_MSG/msg_command.html

python -m robot.libdoc LIBS/COM_MSG/msg_command.py LIBS/COM_MSG/msg_command.html

An sample for python document:

class BuiltIn(_Verify, _Converter, _Variables, _RunKeyword, _Control, _Misc):
"""An always available standard library with often needed keywords.

``BuiltIn`` is Robot Framework's standard library that provides a set
of generic keywords needed often. It is imported automatically and
thus always available. The provided keywords can be used, for example,
for verifications (e.g. `Should Be Equal`, `Should Contain`),
conversions (e.g. `Convert To Integer`) and for various other purposes
(e.g. `Log`, `Sleep`, `Run Keyword If`, `Set Global Variable`).

== Table of contents ==

- `HTML error messages`
- `Evaluating expressions`
- `Boolean arguments`
- `Multiline string comparisons`
- `Shortcuts`
- `Keywords`

= HTML error messages =

Many of the keywords accept an optional error message to use if the keyword
fails. Starting from Robot Framework 2.8, it is possible to use HTML in
these messages by prefixing them with ``*HTML*``. See `Fail` keyword for
a usage example. Notice that using HTML in messages is not limited to
BuiltIn library but works with any error message.

= Evaluating expressions =

Many keywords, such as `Evaluate`, `Run Keyword If` and `Should Be True`,
accept an expression that is evaluated in Python. These expressions are
evaluated using Python's
[https://docs.python.org/2/library/functions.html#eval|eval] function so
that all Python built-ins like ``len()`` and ``int()`` are available.
`Evaluate` allows configuring the execution namespace with custom modules,
and other keywords have [https://docs.python.org/2/library/os.html|os]
and [https://docs.python.org/2/library/sys.html|sys] modules available
automatically.