vscode-python: Cannot read property 'toCommandArgument' of undefined

Environment data

VS Code version: 1.19.3 Python Extension version: 2018.1.0 Python Version: 3.6.4 (x86) OS and version: WIndows 10 x64

Actual behavior

Getting an error when running “Run Python File in Terminal” using a key binding

Error: Cannot read property 'toCommandArgument' of undefined
	at TerminalCodeExecutionProvider.<anonymous> (C:\Users\Szabi\.vscode\extensions\ms-python.python-2018.1.0\out\client\terminals\codeExecution\terminalCodeExecution.js:44:99)
	at Generator.next (<anonymous>)
	at fulfilled (C:\Users\Szabi\.vscode\extensions\ms-python.python-2018.1.0\out\client\terminals\codeExecution\terminalCodeExecution.js:15:58)
	at <anonymous>

Expected behavior

The python file should be executed without error.

Steps to reproduce:

I was able to reproduce this with a fresh new install of vscode and the python extension only

• Install this extension
• Run a python file in terminal using ctrl+shit+P
• Now you can assign a key binding to this command (I used ctrl+alt+P)
• Press ctrl+alt+P on the same file
• A WARN is shown and the file is not executed

Logs

Output from Python output panel

##########Linting Output - pylint##########
Using config file d:\Programming\ModernGL\.pylintrc

--------------------------------------------------------------------

Your code has been rated at 10.00/10 (previous run: 10.00/10, +0.00)

Output from Console window (Help->Developer Tools menu)

[Extension Host] Python Extension: Failed to get conda info from conda null
t.log @ /C:/Program Files/Microsoft VS Code/resources/app/out/vs/workbench/workbench.main.js:249
/C:/Program Files/Microsoft VS Code/resources/app/out/vs/workbench/workbench.main.js:1226   ERR Cannot read property 'toCommandArgument' of undefined: TypeError: Cannot read property 'toCommandArgument' of undefined
	at TerminalCodeExecutionProvider.<anonymous> (C:\Users\Szabi\.vscode\extensions\ms-python.python-2018.1.0\out\client\terminals\codeExecution\terminalCodeExecution.js:44:99)
	at Generator.next (<anonymous>)
	at fulfilled (C:\Users\Szabi\.vscode\extensions\ms-python.python-2018.1.0\out\client\terminals\codeExecution\terminalCodeExecution.js:15:58)
	at <anonymous>
/C:/Program Files/Microsoft VS Code/resources/app/out/vs/workbench/workbench.main.js:156 WARNING: Promise with no error callback:123
/C:/Program Files/Microsoft VS Code/resources/app/out/vs/workbench/workbench.main.js:156 Object
/C:/Program Files/Microsoft VS Code/resources/app/out/vs/workbench/workbench.main.js:249 [Extension Host] (node:9212) DeprecationWarning: os.tmpDir() is deprecated. Use os.tmpdir() instead.
t.log @ /C:/Program Files/Microsoft VS Code/resources/app/out/vs/workbench/workbench.main.js:249
/C:/Program Files/Microsoft VS Code/resources/app/out/vs/workbench/workbench.main.js:1226   ERR Cannot read property 'toCommandArgument' of undefined: TypeError: Cannot read property 'toCommandArgument' of undefined
	at TerminalCodeExecutionProvider.<anonymous> (C:\Users\Szabi\.vscode\extensions\ms-python.python-2018.1.0\out\client\terminals\codeExecution\terminalCodeExecution.js:44:99)
	at Generator.next (<anonymous>)
	at fulfilled (C:\Users\Szabi\.vscode\extensions\ms-python.python-2018.1.0\out\client\terminals\codeExecution\terminalCodeExecution.js:15:58)
	at <anonymous>
/C:/Program Files/Microsoft VS Code/resources/app/out/vs/workbench/workbench.main.js:156 WARNING: Promise with no error callback:125
/C:/Program Files/Microsoft VS Code/resources/app/out/vs/workbench/workbench.main.js:156 Object
/C:/Program Files/Microsoft VS Code/resources/app/out/vs/workbench/workbench.main.js:1226   ERR Cannot read property 'toCommandArgument' of undefined: TypeError: Cannot read property 'toCommandArgument' of undefined
	at TerminalCodeExecutionProvider.<anonymous> (C:\Users\Szabi\.vscode\extensions\ms-python.python-2018.1.0\out\client\terminals\codeExecution\terminalCodeExecution.js:44:99)
	at Generator.next (<anonymous>)
	at fulfilled (C:\Users\Szabi\.vscode\extensions\ms-python.python-2018.1.0\out\client\terminals\codeExecution\terminalCodeExecution.js:15:58)
	at <anonymous>
/C:/Program Files/Microsoft VS Code/resources/app/out/vs/workbench/workbench.main.js:156 WARNING: Promise with no error callback:137
/C:/Program Files/Microsoft VS Code/resources/app/out/vs/workbench/workbench.main.js:156 Object