Please note, this is a STATIC archive of website www.w3resource.com from 19 Jul 2022, cach3.com does not collect or store any user information, there is no "phishing" involved.
w3resource

Python: Command line arguments

Python Basic: Exercise-76 with Solution

Write a Python program to get the command-line arguments (name of the script, the number of arguments, arguments) passed to a script.

Sample Solution:

Python Code (test.py): 

import sys
print("This is the name/path of the script:"),sys.argv[0]
print("Number of arguments:",len(sys.argv))
print("Argument List:",str(sys.argv))

The command executed in command prompt:

[email protected]:~$ python test.py arg1 arg2 arg3

Sample Output: 

This is the name/path of the script: test.py
('Number of arguments:', 4)
('Argument List:', "['test.py', 'arg1', 'arg2', 'arg3']")

Flowchart:

Flowchart: Get the command-line arguments passed to a script.

 

Have another way to solve this solution? Contribute your code (and comments) through Disqus.

Previous: Write a Python program to get the copyright information and write Copyright information in Python code.
Next: Write a Python program to test whether the system is a big-endian platform or little-endian platform.

What is the difficulty level of this exercise?

Test your Programming skills with w3resource's quiz.



Python: Tips of the Day

Find current directory and file's directory:

To get the full path to the directory a Python file is contained in, write this in that file:

import os 
dir_path = os.path.dirname(os.path.realpath(__file__))

(Note that the incantation above won't work if you've already used os.chdir() to change your current working directory, since the value of the __file__ constant is relative to the current working directory and is not changed by an os.chdir() call.)

To get the current working directory use

import os
cwd = os.getcwd()

Documentation references for the modules, constants and functions used above:

  • The os and os.path modules.
  • The __file__ constant
  • os.path.realpath(path) (returns "the canonical path of the specified filename, eliminating any symbolic links encountered in the path")
  • os.path.dirname(path) (returns "the directory name of pathname path")
  • os.getcwd() (returns "a string representing the current working directory")
  • os.chdir(path) ("change the current working directory to path")

Ref: https://bit.ly/3fy0R6m