What is this?

A note about the tool ** mayapy ** provided within Autodesk Maya. This is a continuation of the Maya part of this article

Python interpreter in Maya, Houdini, blender, Nuke http://qiita.com/it_ks/items/ae1d0ae01d831c2fc9ae

mayapy Maya version of python.exe. It's called python.exe that can summon Maya functions.

Roughly speaking, if you have Maya installed You don't have to install Python separately (in a win environment) to use this.

place

Location in win

C:\Program Files\Autodesk¥Maya{ver}\bin\mayapy.exe It is in the same order as Maya itself (maya.exe). Double-click to open a black window and use it as a normal Python interpreter.

Location on OS X

~~ I will look it up later and write it ~~ ([Addition] I told you in the comments!)

/Applications/Autodesk/maya{ver}/Maya.app/Contents/bin/mayapy

version

Mayapy 2016 built-in mayapy.exe The version as Python is ** 2.7.6 **.

Verification

The version is displayed when mayapy.exe is started, but if you want to get it in your Python code

`version confirmation`


import sys
sys.version

sys.version_info

Around.

init There is a module for using Maya features, Must be initialized after import. I'm touching that area lightly here

http://qiita.com/it_ks/items/ae1d0ae01d831c2fc9ae#%E3%83%A2%E3%82%B8%E3%83%A5%E3%83%BC%E3%83%AB

option

You can give a script at startup to automatically process it, or specify options to change the behavior. When checking what options are available

"C:\Program Files\Autodesk\Maya2016\bin\mayapy.exe" -h

Add -h or --help. Then it looks like this (▼)

`mayapy-help`


usage: C:\Program Files\Autodesk\Maya2016\bin\mayapy.exe [option] ... [-c cmd | -m mod | file | -] [arg] ...

Options and arguments (and corresponding environment variables):
-B     : don't write .py[co] files on import; also PYTHONDONTWRITEBYTECODE=x
-c cmd : program passed in as string (terminates option list)
-d     : debug output from parser; also PYTHONDEBUG=x
-E     : ignore PYTHON* environment variables (such as PYTHONPATH)
-h     : print this help message and exit (also --help)
-i     : inspect interactively after running script; forces a prompt even
         if stdin does not appear to be a terminal; also PYTHONINSPECT=x
-m mod : run library module as a script (terminates option list)
-O     : optimize generated bytecode slightly; also PYTHONOPTIMIZE=x
-OO    : remove doc-strings in addition to the -O optimizations
-R     : use a pseudo-random salt to make hash() values of various types be
         unpredictable between separate invocations of the interpreter, as
         a defense against denial-of-service attacks
-Q arg : division options: -Qold (default), -Qwarn, -Qwarnall, -Qnew
-s     : don't add user site directory to sys.path; also PYTHONNOUSERSITE
-S     : don't imply 'import site' on initialization
-t     : issue warnings about inconsistent tab usage (-tt: issue errors)
-u     : unbuffered binary stdout and stderr; also PYTHONUNBUFFERED=x
         see man page for details on internal buffering relating to '-u'
-v     : verbose (trace import statements); also PYTHONVERBOSE=x
         can be supplied multiple times to increase verbosity
-V     : print the Python version number and exit (also --version)
-W arg : warning control; arg is action:message:category:module:lineno
         also PYTHONWARNINGS=arg
-x     : skip first line of source, allowing use of non-Unix forms of #!cmd
-3     : warn about Python 3.x incompatibilities that 2to3 cannot trivially fix
file   : program read from script file
-      : program read from stdin (default; interactive mode if a tty)
arg ...: arguments passed to program in sys.argv[1:]

Other environment variables:
PYTHONSTARTUP: file executed on interactive startup (no default)
PYTHONPATH   : ';'-separated list of directories prefixed to the
               default module search path.  The result is sys.path.
PYTHONHOME   : alternate <prefix> directory (or <prefix>;<exec_prefix>).
               The default module search path uses <prefix>\lib.
PYTHONCASEOK : ignore case in 'import' statements (Windows).
PYTHONIOENCODING: Encoding[:errors] used for stdin/stdout/stderr.
PYTHONHASHSEED: if this variable is set to 'random', the effect is the same
   as specifying the -R option: a random value is used to seed the hashes of
   str, bytes and datetime objects.  It can also be set to an integer
   in the range [0,4294967295] to get hash values with a predictable seed.

What seems to be particularly important

-c
-m
file

is.

-c -c cmd : program passed in as string (terminates option list) Write a Python command following the -c option. Use this option at the end of the options list (this option exits the options list)

-m -m mod : run library module as a script (terminates option list) Run the module as a script. This option, like -c, is used at the end of the options list

file file : program read from script file Give mayapy the file you want it to run (the .py file that contains the Python code). For some reason, I think this is the one I use most often.

arg arg ...: arguments passed to program in sys.argv[1:] Items written after the option are stored after the second item of sys.argv.

For example "C:\Program Files\Autodesk\Maya2016\bin\mayapy.exe" -c "import sys;print sys.argv" test 1234 %date% If you do this ['-c', 'test', '1234', '2015/12/29'] It will be printed like this. Even if it is not enclosed in "~", it is treated as a character string, and numbers are also character strings. Variables from% to% can also be used.

Remarks

environment

Microsoft Windows [Version 10.0.10240]
Autodesk Maya 2016 Ext.1 SP4 -* Autodesk family does not officially support win10 ~~

After that, the verification was completed and now it is described as "Win10 support in Maya 2016 or later" [** Support for Windows 10 and .NET 4.6 for Autodesk products **](https://knowledge.autodesk.com/en/support/autocad/learn-explore/caas/sfdcarticles/sfdcarticles/JPN/Windows-10- support-for-Autodesk-products.html)

reference

Use Python from an external interpreter http://help.autodesk.com/view/MAYAUL/2016/JPN/?guid=GUID-83799297-C629-48A8-BCE4-061D3F275215

How to process multiple scene files at once http://www.dfx.co.jp/dftalk/?p=17829

Maya Python help usage options and environment variables http://www.cghelpline.com/article/maya-python-help-usage-options-and-environment-variables/133

(▲) Last updated = 2012-10-01 15:08:23

Python command line options http://docs.python.jp/2/using/cmdline.html

mayapy --Python in Maya