[Python] Using python wexpect to run powershell command and start connect to a Linux AWS...

I want to using python to connect to an AWS Linux instance and run some code. Here is my chain of commands ran in a windows terminal:

powershell "Set-ExecutionPolicy -Scope Process -ExecutionPolicy Bypass -Force; H:\\\\scripts\\\\workstation\\\\headnode.ps1 -myUser username"
sudo su - ubuntu
sbatch -J job.sbatch


This works but I cannot manage to reproduce with python, I've tried

import expect
child = wexpect.spawn('powershell "Set-ExecutionPolicy -Scope Process -ExecutionPolicy Bypass -Force; H:\\\\scripts\\\\workstation\\\\headnode.ps1 -myUser username"')

# Wait for Linux prompt
child.expect([r'\$', r'#', 'ubuntu@'], timeout=60)

# Run the commands
child.sendline('sudo su - ubuntu')
child.expect([r'#', 'ubuntu@'], timeout=30)
child.sendline('sbatch -J job.sbatch')


This give a EOF error here: child.expect([r'$', r'#', 'ubuntu@'], timeout=60)

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