How do I put a variable inside a String in Python?

[evilcode1]

hello all ...

im trying to add a variable inside a String ...
this is my code :

import os 
import sys

cmd2 = """powershell -command "Get-Process | where {$_.Description -like 'VMware Tools Core Service'} | select -expand id""" # the commnad run the powerashell and search for a proccess with Description then get her pid number 
tmp = os.popen(cmd2).read()

cmd3 = "wmic process where processId="+tmp+"get name | findstr /v Name"  # this commnad show the name of the pid number thet getting from first command 

tmp2 = os.popen(cmd3).read()
#print("hey " + tmp ) 
print tmp2

the problem here : wmic process where processId="+tmp+"get name | findstr /v Name" ,,,, my script ignore this section of command ( get name | findstr /v Name ) it's add new line and just run the commnad until here : wmic process where processId="+tmp

how i can solve this issue ?

---

i think the problem is here :


the powershell add a new empty line !! when i try to use len() it gives me 5 while they are just 4 !!
how i can remove the empty line ?

[ichabod801]

If I understand correctly, it is adding what you want it to add, but it is also adding a newline. The solution to that would be to change tmp to tmp.strip(), which will remove any leading or trailing white space (like newlines).

[Larz60+]

if python 3.6 or newer, use f-string:

>>> tmp = '12345'
>>> cmd3 = f"wmic process where processId = {tmp} get name | findstr /v Name"
>>> cmd3
'wmic process where processId = 12345 get name | findstr /v Name'
>>>

[evilcode1]

if python 3.6 or newer, use f-string:

>>> tmp = '12345'
>>> cmd3 = f"wmic process where processId = {tmp} get name | findstr /v Name"
>>> cmd3
'wmic process where processId = 12345 get name | findstr /v Name'
>>>

i use python 2.7 how i can use f"wmic process where processId = {tmp} get name | findstr /v Name" ??
note : "wmic process where processId = {tmp} get name | findstr /v Name" ===> not work in in python 2.7
: "wmic process where processId={}get name | findstr /v Name".format(tmp) ===> work in python 2.7 but ignore ( get name | findstr /v Name )

[nilamo]

: "wmic process where processId={}get name | findstr /v Name".format(tmp) ===> work in python 2.7 but ignore ( get name | findstr /v Name )

What does that mean? It works?

[evilcode1]

: "wmic process where processId={}get name | findstr /v Name".format(tmp) ===> work in python 2.7 but ignore ( get name | findstr /v Name )

What does that mean? It works?

i mean it takes the variable result from tmp (7128) ... but its run command until this wmic process where processId={}get name
if i use "wmic process where processId={tmp}get name | findstr /v Name" i got nothing just empty space

[evilcode1]

any help ?

[nilamo]

What's the current issue? Is string interpolation still not working? Or is the external command pipeline failing?

[evilcode1]

What's the current issue? Is string interpolation still not working? Or is the external command pipeline failing?

string interpolation is working ... but python os.popen ignore this section from my commnad : ( get name | findstr /v Name )

it's run commnad until here after getting the pid number for the process from tmp .. its hit enter

wmic process where processId={}

---

1= the result should be like this
2= the python result

by the way is there anyway to do this in pure python without using powershell and cmd ?? can i get the whole process description with psutil ??