variable inside a subprocess.call in python

Question

I want to insert a variable in place of the ip address this is my working code without the variable:

subprocess.call(r'net use T: \\192.168.1.10\myshare /PERSISTENT:YES', shell=True)

this is my not workings attempts with the variable:

myip = "192.168.1.10"
subprocess.call(r'net use T: \\'+myip'\myshare /PERSISTENT:YES', shell=True)

#or:
subprocess.call(r'net use T: \\', 'myip', '\myshare /PERSISTENT:YES', shell=True)

#or:
subprocess.call(r'net use T: \\'+myip+'\myshare /PERSISTENT:YES', shell=True)

#or:
subprocess.call(r'net use T: \\+myip+\myshare /PERSISTENT:YES', shell=True)

none of these works any suggestions?

Your third example (subprocess.call(r'net use T: \\'+myip+'\myshare /PERSISTENT:YES', shell=True)) should have worked. Did you get any error message? — 0x5453
– 0x5453, Commented Jul 19, 2022 at 20:25
The second substring also has backslashes and needs the r prefix. — Tim Roberts
– Tim Roberts, Commented Jul 19, 2022 at 20:27

Tim Roberts · Accepted Answer · 2022-07-19 20:26:52Z

1

You need the raw prefix on any substring that has backslashes:

subprocess.call(r'net use T: \\'+myip+r'\myshare /PERSISTENT:YES', shell=True)

Or:

subprocess.call(
   ['net', 'use', rf'\\{myip}\myshare', '/PERSISTENT:YES'],
   shell=True
)

answered Jul 19, 2022 at 20:26

Tim Roberts

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