addCommands Method Creates Error

[benjiboy50fonz]

Hi devs, @virtuald,

Here is the requested singular file as well as the error. My machine is running Windows 10 and has the most up to date libraries, including commands-v2 version 2021.2.2.0. Here is the traceback of my error:

Traceback (most recent call last):
  File "C:\Users\Ben Bistline\AppData\Local\Programs\Python\Python39\lib\site-packages\wpilib\_impl\start.py", line 106, in start
    self.robot.startCompetition()
  File "C:\Users\Ben Bistline\Code\RobotpyDev\one_file_robot\robot.py", line 23, in robotInit
    self.myCommand = TestCommandGroup()
  File "C:\Users\Ben Bistline\Code\RobotpyDev\one_file_robot\robot.py", line 13, in __init__
    self.addCommands( # Error located at this line.
  File "C:\Users\Ben Bistline\AppData\Local\Programs\Python\Python39\lib\site-packages\wpilib\_impl\start.py", line 106, in start
    self.robot.startCompetition()
  File "C:\Users\Ben Bistline\Code\RobotpyDev\one_file_robot\robot.py", line 23, in robotInit
    self.myCommand = TestCommandGroup()
  File "C:\Users\Ben Bistline\Code\RobotpyDev\one_file_robot\robot.py", line 13, in __init__
    self.addCommands( # Error located at this line.
RuntimeError: Unable to cast Python instance to C++ type (compile in debug mode for details)

The singular file that I used to create this issue can be found here:

#!/usr/bin/env python3

from commands2 import TimedCommandRobot, SequentialCommandGroup, WaitCommand
from wpilib._impl.main import run
from wpilib import RobotBase

import shutil, sys

class TestCommandGroup(SequentialCommandGroup):
    def __init__(self):
        super().__init__()
        
        self.addCommands( # Error located at this line.
            [WaitCommand(1)]
        )

class Robot(TimedCommandRobot):
    """Implements a Command Based robot design"""

    def robotInit(self):
        """Set up everything we need for a working robot."""
        
        self.myCommand = TestCommandGroup()

    def teleopInit(self):
        self.myCommand.schedule()
        
    def autonomousInit(self):
        pass
   
if __name__ == "__main__":
    if len(sys.argv) > 1 and sys.argv[1] == "deploy":
        shutil.rmtree("opkg_cache", ignore_errors=True)
        shutil.rmtree("pip_cache", ignore_errors=True)

    run(Robot)

Thanks!

[benjiboy50fonz]

Note, after further testing, this only occurs when the arguments are given within a list.