Subprocess in Python: File Name too long

Question

I try to call a shellscript via the subprocess module in Python 2.6.

import subprocess

shellFile = open(\"linksNetCdf.txt\", \"r\")

for row in shellFile:
    s         


        

Answer 1

subprocess.call can take the command to run in two ways - either a single string like you'd type into a shell, or a list of the executable name followed by the arguments.

You want the first, but were using the second

import subprocess

shellFile = open("linksNetCdf.txt", "r")

for row in shellFile:
    subprocess.call(row, shell=True)

By converting your row into a list containing a single string, you're saying something like "Run the command named echo these were supposed to be arguments with no arguments"

Answer 2

You need to tell subprocess to execute the line as full command including arguments, not just one program.

This is done by passing shell=True to call

 import subprocess
 cmd = "ls " + "/tmp/ " * 30
 subprocess.call(cmd, shell=True)