TypeError: bufsize must be an integer?

Question

I am making a small program where I can open a file from any part of the computer with it's default editor. This is my code:

from os import *
import subprocess
print("Welcome to my File Finder. Here you can search for a file and open it.")
file_name = str(input("Your file's name:"))
print(subprocess.call(["xdg-open"], file_name))]

But instead of opening, it return this error:

Traceback (most recent call last):
File "Important_tester_projects.py", line 6, in <module>
  print(subprocess.call(["xdg-open"], file_name))
File "/usr/lib/python3.6/subprocess.py", line 267, in call
  with Popen(*popenargs, **kwargs) as p:
File "/usr/lib/python3.6/subprocess.py", line 609, in __init__
  raise TypeError("bufsize must be an integer")
TypeError: bufsize must be an integer

I have googled to find a solution for this error, but I can't find any that seems to solve my Problem. How can fix my error?

NOTE: My Linux OS uses XFCE, not Gnome.

Solution

Instead, use subprocess.check_output(). Since your command has multiple words, parse your command with split() method from shlex lib. Something like this:

import subprocess
import shlex

cmd=shlex.split('[find][2] root_dir -name file_name')
print subprocess.check_output(cmd)

Comments

[abarnert]

This is a simple typo: instead of passing ["xdg-open", file_name] as the args, you’re passing ["xdg-open"]` as the args and file_name as the bufsize.

[Mahir Islam]

@abarnert what should I pass then?

[aydow]

@mahir, he means use call like this print(subprocess.call(["xdg-open"], file_name))

[aydow]

Possible duplicate of Subprocess cp returns error - bufsize must be integer

[Mahir Islam]

@aydow it still returns error

[abarnert]

Pass ["xdg-open", file_name], just as I said. I guess this isn't a simple typo, and you don't understand the API?

[abarnert]

@aydow No I don't. That's exactly what he's already calling, so it's going to cause the exact same error he's already getting.

[aydow]

sorry, my mistake. i meant print(subprocess.call(["xdg-open", file_name]))

[abarnert]

@aydow Since that question is itself a dup of bufsize must be an integer error while grepping a message, probably better to use the latter as a dup target, unless there's something wrong with it. (I already voted to close as a typo and retracted, so I can't vote to close as a dup…)

[aydow]

@abarnert, i did see that, but i think that stackoverflow.com/questions/34156193/… better addresses this question.

[abarnert]

@aydow OK, cool. If I hadn't wasted my vote, I'd vote for your dup. :)

[aydow]

@abarnert no worries :)