CODEWITHSUNDEEP
pythonpowershellurllib2
Numpty
Numpty

Reputation: 1481

Fetch PowerShell script from GitHub and execute it

Running into issues executing a PowerShell script from within Python.

The Python itself is simple, but it seems to be passing in \n when invoked and errors out.

['powershell.exe -ExecutionPolicy Bypass -File', '$Username = "test";\n$Password = "password";\n$URL

This is the code in full:

import os
import subprocess
import urllib2
fetch = urllib2.urlopen('https://raw.githubusercontent.com/test')
script = fetch.read()
command = ['powershell.exe -ExecutionPolicy Bypass -File', script]

print command   #<--- this is where I see the \n. 
#\n does not appear when I simply 'print script'

So I have two questions:

  1. How do I correctly store the script as a variable without writing to disk while avoiding \n?
  2. What is the correct way to invoke PowerShell from within Python so that it would run the script stored in $script?

Upvotes: 0

Views: 446

Answers (2)

Ansgar Wiechers
Ansgar Wiechers

Reputation: 200303

  1. How do I correctly store the script as a variable without writing to disk while avoiding \n?

This question is essentially a duplicate of this one. With your example it would be okay to simply remove the newlines. A safer option would be to replace them with semicolons.

script = fetch.read().replace('\n', ';')
  1. What is the correct way to invoke PowerShell from within Python so that it would run the script stored in $script?

Your command must be passed as an array. Also you cannot run a sequence of PowerShell statements via the -File parameter. Use -Command instead:

rc = subprocess.call(['powershell.exe', '-ExecutionPolicy', 'Bypass', '-Command', script])

Upvotes: 2

Kody
Kody

Reputation: 1

I believe this is happening because you are opening up PowerShell and it is automatically formatting it a specific way.

You could possibly do a for loop that goes through the command output and print without a /n.

Upvotes: 0

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