Get myself path with maya python

Coding
#1

I want to know myself path with maya python like “file”.
Following code, getScriptPath() will do this.
This code saved to /document/maya/2020/script/working/getScriptPath.py and called from shelf.

from PySide2 import QtCore
from PySide2 import QtWidgets
from shiboken2 import wrapInstance

import os
import sys

import maya.OpenMayaUI as omui


def maya_main_window():
"""
Return the Maya main window widget as a Python object
"""
main_window_ptr = omui.MQtUtil.mainWindow()
return wrapInstance(long(main_window_ptr), QtWidgets.QWidget)


class TestDialog(QtWidgets.QDialog):

def __init__(self, parent=maya_main_window()):
    super(TestDialog, self).__init__(parent)

    self.setWindowTitle("Test Dialog")
    self.setMinimumWidth(200)

    # Remove the ? from the dialog on Windows
    self.setWindowFlags(self.windowFlags() ^ QtCore.Qt.WindowContextHelpButtonHint)
    self.create_testbtn()
    
def create_testbtn(self):
    main_lo = QtWidgets.QVBoxLayout(self)
    test_button = QtWidgets.QPushButton("Test it")
    main_lo.addWidget(test_button)
    test_button.clicked.connect(self.getScriptPath)
    
def getScriptPath(self):
    print os.path.abspath(__file__)
    
            
if __name__ == "__main__":
    d = TestDialog()
    d.show()

I tried…

  • os.path.abspath(file)
  • os.path.dirname(sys.argv[0])
  • os.getcwd()

These seems to returned maya’s path.

This is my first post, so if there’s anything I’m missing, I’d appreciate it if you could let me know.
Thanks to your help.

#2

Not sure exactly how you are running this script.

  • I saved this script to %HOME%/Documents/maya/2020/scripts as foo.py
  • I imported the module and TestDialog().getScriptPath() seems to work just fine.

Are you familiar with how Python modules and packages works? If not, check this link:
Python Modules and Packages – An Introduction – Real Python

It’s a good start.

If you are familiar with packages and modules and how they are imported. You might want to check how your PYTHONPATH and MAYA_SCRIPT_PATH are constructed.

For reference, __file__ is only created when the package/module is imported.

#3

Thanks to your advice, my problem is solved!

1 Like
#4

Just chiming in:

I’ve noticed sometimes when sending modules to Maya via a PyCharm setup with MayaCharm, things like __file__ return nulls.

Guessing here that MayaCharm is sending a block of text and executing it, not an import process.

Either way, Writing a little header file that imports what you are working on and pointing the project config at that is a good practice if using that sort of workflow.

#5

__file__ is not guaranteed to exist and won’t point to anything in a variety of circumstances.

Much better to use the inspect module.
inspect.getfile(inspect.currentframe())

3 Likes
#6

@ross-g if you’re not in the scope of an imported module, wont __file__ just return the same thing? If not, what does it return?

#7

__file__ is an optional attribute set on a module, as part of the import process.
Not all modules come from files, and as such would struggle with using the __file__ attribute.

However, any .py file that you import, will generally speaking have a __file__ attribute. Unless you’ve done something clever to the import system.

2 Likes