How to read process command line arguments

0 votes

I am originally a C programmer. I have seen numerous tricks and "hacks" to read many different arguments.

What are some of the ways Python programmers can do this?

Aug 8, 2018 in Python by Priyaj
• 58,140 points
145 views

1 answer to this question.

0 votes

The canonical solution in the standard library is argparse (docs):

Here is an example:

from argparse import ArgumentParser

parser = ArgumentParser()

parser.add_argument("-f", "--file", dest="filename", help="write report to FILE", metavar="FILE")

parser.add_argument("-q", "--quiet", action="store_false", dest="verbose", default=True, help="don't print status messages to stdout")

args = parser.parse_args()

argparse supports (among other things):

  • Multiple options in any order.

  • Short and long options.

  • Default values.

  • Generation of a usage help message.

answered Aug 8, 2018 by bug_seeker
• 15,550 points

Related Questions In Python

0 votes
1 answer

How to read/process command line arguments?

The canonical solution in the standard library ...READ MORE

answered Jun 4, 2018 in Python by aryya
• 7,440 points
223 views
0 votes
1 answer

How to prompt for user input and read command-line arguments?

To read user input you can try the cmd module for ...READ MORE

answered Jan 5 in Python by Gitika
• 65,950 points
411 views
0 votes
1 answer

How to input optional arguments in python command line?

Please use this code. if len(sys.argv) == 2: first_log ...READ MORE

answered Jul 11, 2019 in Python by Suri
3,849 views
0 votes
1 answer

How to read a large file, line by line, in Python?

The correct, fully Pythonic way to read ...READ MORE

answered Jul 1, 2019 in Python by SDeb
• 13,300 points
255 views
0 votes
2 answers
+1 vote
2 answers

how can i count the items in a list?

Syntax :            list. count(value) Code: colors = ['red', 'green', ...READ MORE

answered Jul 7, 2019 in Python by Neha
• 330 points

edited Jul 8, 2019 by Kalgi 2,421 views
0 votes
0 answers
+5 votes
6 answers

Lowercase in Python

You can simply the built-in function in ...READ MORE

answered Apr 11, 2018 in Python by hemant
• 5,810 points
1,818 views
0 votes
3 answers

how to exit a python script in an if statement

In Python, the break statement provides you with the opportunity ...READ MORE

answered Dec 14, 2020 in Python by Roshni
• 10,480 points
131,017 views
+2 votes
4 answers

How can I replace values with 'none' in a dataframe using pandas

Actually in later versions of pandas this ...READ MORE

answered Aug 13, 2018 in Python by bug_seeker
• 15,550 points
51,322 views