IndexError: list index out of range python ( Print )

Question

I was trying to run this:

import sys

# Program 
print("Hallo",sys.argv[1])

But getting this error:

Traceback (most recent call last):
File "C:\Users\Shakh\Desktop\Hello3.py", line 4, in
print("Hallo",sys.argv[1])
IndexError: list index out of range

yeah. It's sample code was given but can't run it . That's why I asked. — Shakhawat Hossain Turag, Jun 05 '18 at 01:19
@U8-Forward It could be but I found that before but looking chaos and difficult to understand. Thanks — Shakhawat Hossain Turag, Jun 05 '18 at 01:20
How about this: https://stackoverflow.com/questions/15121717/list-index-out-of-range-when-using-sys-argv1 — U13-Forward, Jun 05 '18 at 01:25
Or this: https://stackoverflow.com/questions/31689100/sys-argv1-indexerror-list-index-out-of-range?utm_medium=organic&utm_source=google_rich_qa&utm_campaign=google_rich_qa — U13-Forward, Jun 05 '18 at 01:26

Anthony · Answer 1 · 2018-06-05T03:37:31.593

2

Try this:

import sys
print("Hallo",sys.argv[0])

There is no index 1 at the time, list's index start with 0.

edited Jun 05 '18 at 03:37

answered Jun 05 '18 at 01:55

Anthony

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score 1 · Answer 2 · answered Jun 05 '18 at 01:31

1

sys.argv contains a list of command line arguments that you have supplied.

If you don't give any arguments (except for python program.py), the list will have only one argiment i.e., only sys.argv[0].

You will need to either give some argument like python program.py xyz, or use sys.argv[0]. Using sys.argv[0] will return the name of python file to you.

answered Jun 05 '18 at 01:31

Skywalker

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Can you explain how should I give some argument like (python program.py) . What you have written in your 3rd part 1st line . – Shakhawat Hossain Turag Jun 20 '18 at 06:01
If I wanted my program to say "Hello Vaibhav", then I would give the argument like python program.py Vaibhav. And my print statement will be print("Hello",sys.argv[1]) – Skywalker Jun 21 '18 at 06:33

score 0 · Answer 3 · answered Jun 05 '18 at 01:15

0

sys.argv will hold command line arguments that you pass when you run the program. For example, you could run this as:

python Hello3.py Shakhawat

answered Jun 05 '18 at 01:15

Thursdays Coming

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This would print HalloShakhawat as Hello3.py is the first element of sys.argv – Mateus Terra Jun 05 '18 at 01:29

IndexError: list index out of range python ( Print )

3 Answers3