maya.standalone

[tomas mikulak]

Hi everyone,

could somebody help me with running script with argument(path) to save new file maya standalone will create and save it to given location and all that from maya.

I wrote simple python script that takes path argument and when I do it manually openning cmd and typing mayapy path\\script.py -p “c:\\”

it works and creates simple scene with sphere named test on c drive

but I can’t figure it out how to run it from maya.

this is just concept what I need standalone to do.

[Justin Israel]

Are you saying that you are seeing failures when you run it from Maya? Or that you don't know how to execute it from Maya? If its a matter of how to even run the script, you would go about that using the 'subprocess' module:

import subprocess

exitcode = subprocess.call(["mayapy", "/path/to/script.py", "-p", "c:\\"]) 

See:

https://docs.python.org/2/library/subprocess.html

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[tomas mikulak]

I used subprocess but it didn’t create a file. and it gave me error wrong path, now I see a light there, I put -p “c:\\” as one argument and you separated it, I will give it a try, thanks

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[tomas mikulak]

no still nothing.

here is how I try to run it from maya

import maya.cmds as mc
import os
import subprocess
import sys

mp = 'c:\Program Files\Autodesk\Maya2016.5\bin\mayapy.exe'

function = '\\discobolos1\websters\install\MAYA_SCRIPTS\PYTHON\batchMaya.py'

print(function)
arg = ' -p '
arg2 = '"c:\\"'
print(arg)
print(command)


subprocess.call([mp,function,arg,arg2])

if I run subprocess.call([mp]) it runs mayapy su I know it is not all wrong, but I have tried many \ or \\ variations for paths and it always ends with Result:2 in maya and no file is created

pi 24. 5. 2019 o 6:56 tomas mikulak <mikula...@gmail.com> napísal(a):

[Justin Israel]

It is much easier if you just stick with forward slashing for your paths, which will work fine in Windows as far as I know:

mp = 'c:/Program Files/Autodesk/Maya2016.5/bin/mayapy.exe'
function = '//discobolos1/websters/install/MAYA_SCRIPTS/PYTHON/batchMaya.py'

I'm not really sure about the first part of the function. Is that a network path? Do you get any errors in your console/shell?

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[Justin Israel]

On Fri, May 24, 2019 at 6:07 PM Justin Israel <justin...@gmail.com> wrote:

It is much easier if you just stick with forward slashing for your paths, which will work fine in Windows as far as I know:

mp = 'c:/Program Files/Autodesk/Maya2016.5/bin/mayapy.exe'
function = '//discobolos1/websters/install/MAYA_SCRIPTS/PYTHON/batchMaya.py'

I'm not really sure about the first part of the function. Is that a network path? Do you get any errors in your console/shell?

I'm still not fully clear if UNC paths can use forward slashes or not, but if you want to try with backslashes, you need to remember to use a raw string, otherwise you would have to double escape the backslashes:

mp = r'c:\Program Files\Autodesk\Maya2016.5\bin\mayapy.exe'

function = r'\\discobolos1\websters\install\MAYA_SCRIPTS\PYTHON\batchMaya.py'

 

Note the r character in front of the string which means python won't interpret the backslashes.

[tomas mikulak]

no error now, before I got error about path don’t exist. I might just save script on c:/ to see if that was some path problem or what, it is just frustraiting.

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[Marcus Ottosson]

The path didn’t exist because, as Justin mentioned, Python interpreted those backslashes to make “escape characters”.

path = '\\discobolos1\websters\install\MAYA_SCRIPTS\PYTHON\batchMaya.py'  
raw_path = r'\\discobolos1\websters\install\MAYA_SCRIPTS\PYTHON\batchMaya.py'

print("path: %s" % path)
print("raw_path: %s" % raw_path)

# path: \discobolos1\websters\install\MAYA_SCRIPTS\PYTHOatchMaya.py
# raw_path: \\discobolos1\websters\install\MAYA_SCRIPTS\PYTHON\batchMaya.py

Note the PYTHONOathMaya.py, that’s what Python was looking for because \b got converted into O.

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[tomas mikulak]

ok, 

I changed backslash to forward slash 

import maya.cmds as mc
import os
import subprocess
import sys

mp = 'c://Program Files//Autodesk//Maya2016.5//bin//mayapy.exe'
function = 'c://batchMaya.py'
arg = ' -p '
arg2 = 'c://'

subprocess.call([mp,function,arg,arg2])

even version like this

import maya.cmds as mc
import os
import subprocess
import sys

mp = r'c:/Program Files/Autodesk/Maya2016.5/bin/mayapy.exe'
function = r'c:/batchMaya.py'
arg = ' -p '
arg2 = r'c:/'



subprocess.call([mp,function,arg,arg2])

no file created.

pi 24. 5. 2019 o 8:45 Marcus Ottosson <konstr...@gmail.com> napísal(a):

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[tomas mikulak]

could somebody just run my script with any path to prove me I can’t do simple things, thanks

[tomas mikulak]

I have some progress, I put variable name and path to one arrgument and it is tryint to work now, but it starts to complain about path again and I don't know why it is trying to save to default scenes

so 25. 5. 2019 o 20:47 tomas mikulak <mikula...@gmail.com> napísal(a):

[tomas mikulak]

ok, I finally made it, I had to use another set of brackets for argument

a=subprocess.Popen([mp ,function, [' -p \"c:\\ \"']],stdout=subprocess.PIPE, stderr=subprocess.STDOUT)

I also found out how to print to maya console when it breaks,

thanks guys, very much appreciated,

tomas

ne 26. 5. 2019 o 1:42 tomas mikulak <mikula...@gmail.com> napísal(a):

[Justin Israel]

On Mon, May 27, 2019 at 12:44 PM tomas mikulak <mikula...@gmail.com> wrote:

ok, I finally made it, I had to use another set of brackets for argument

a=subprocess.Popen([mp ,function, [' -p \"c:\\ \"']],stdout=subprocess.PIPE, stderr=subprocess.STDOUT)

Say whaaat? How does that not result in an exception when you try to pass a list as one of the args in the command? Is this a Windows specific thing? It is definitely not portable for Linux:

    >>> subprocess.call(['echo', ['test']])

    TypeError: execv() arg 2 must contain only string

 

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