Passing argument from one python script to another

Question

I've got 3 files in total : clean.txt, origin.py and pump.py

Clean.txt has some lines in it (actually website links. For eg:

www.link1.com
www.link2.com
www.link3.com
www.link4.com

origin.py is the script that's reading lines one by one and I want this script to send the link (one at a time) to pump.py

pump.py is a script which asks me for one input, which is a link.

Now, I want to make it so that I read lines from clean.txt (origin.py is doing this task) and send them to the pump.py one at a time. Like a loop. Code for Origin.py is :

fo = open("Clean.txt", "r")
nremoval = str(fo.readlines()).replace('\\n','')
      for lines in fo :
          if __name__ =="__main__":
             response = nremoval
             p = subprocess.Popen("pump.py", stdin = subprocess.PIPE)
             time.sleep(2) 
             p.stdin.write(bytes(response, 'ascii'))
             print("injected string :", response)

what is nremoval and response ? why do you write it instead of lines ? — furas
– furas, Commented Jan 25, 2016 at 2:03
updated the code, had forgotten to add that line. nremoval is removing the \n character from the lines fo is reading from. I tried lines, it didn't work. It's not even showing any output for it. — Xonshiz
– Xonshiz, Commented Jan 25, 2016 at 2:26
readlines() returns list and you convert this list into one string - print it to see what strange string you created. You can use lines = lines.strip() to get one line without \n and then you can send it to pump.py — furas
– furas, Commented Jan 25, 2016 at 2:31

furas · Accepted Answer · 2016-01-25 02:57:51Z

2

origin.py

import subprocess
import time

# open file 
with open("Clean.txt", "r") as fo:

     # read line by line
     for line in fo:

         # remove ENTER and SPACES from single line 
         line = line.strip() 

         # call "python pump.py" 
         p = subprocess.Popen(["python","pump.py"], stdin=subprocess.PIPE)

         # or "python3 pump.py"
         #p = subprocess.Popen(["python3","pump.py"], stdin=subprocess.PIPE)

         #time.sleep(2) 

         # send line to standard input
         #p.stdin.write(bytes(line, 'ascii')) # python 3
         p.stdin.write(line) # python 2

         print("injected string:", line)

pump.py

#line = input() # python 3
line = raw_input() # python 2

print("received:", line)

edited Jan 25, 2016 at 2:57

answered Jan 25, 2016 at 2:40

furas

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7 Comments

Xonshiz Over a year ago

I tried his code, but, it's sending all the links at once. And hence, it's giving me an error : i.imgur.com/jw0dhBn.png

Xonshiz Over a year ago

Plus I had to remove 'python3' to make it work. I'm on python 2.7 and it's taking python3 as a file name. Maybe 'cause a lot of things changed in python 3 from python 2.7

furas Over a year ago

try use p.stdin.write(line)

Xonshiz Over a year ago

This is getting weird now. When I remove 'python3', it s [Error 193] %1 is not a valid Win32 application and when I keep 'python3', it says [Error 2] The system cannot find the file specified

Xonshiz Over a year ago

However, If i use pump.bat, it doesn't show up any error. However, it's not passing any value as well.

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