sys.argv - Command Line Argument List

Q

How to retrieve command line arguments with sys.argv list?

✍: FYIcenter.com

A

If execute a Python script file with the "python" command, you can use the sys.argv list to retrieve command line arguments.

Note that the first argument, sys.argv[0], represents the Python script file name.

Here is a Python script file example, the displays command line arguments:

import sys
print("Python version: "+sys.version)
print("Command line arguments:")
for i, e in enumerate(sys.argv):
   print("   sys.argv["+str(i)+"]: "+e)

You can run it with the "python" command:

C:\fyicenter>python echo_argv.py apple orange
Python version: 3.6.2 (v3.6.2:5fd33b5, Jul  8 2017, 04:14:34) 
Command line arguments:
sys.argv[0]: echo_argv.py
sys.argv[1]: apple
sys.argv[2]: orange

⇒ 're' Module - Regular Expression Operations

⇐ Printing Python Engine Information

⇑ 'sys' Module - System Parameters and Functions

⇑⇑ Python Tutorials

2018-11-11, ∼3013🔥, 0💬

What Is Python Module 'sys'
What Is Python module "sys"? "sys" is a Python internal module that provides access to some variables used or maintained by the interpreter and to functions that interact strongly with the interpreter. Here are some important properties and functions provided by the "sys" module: >>&am... 2018-11-11, ∼3190🔥, 0💬

re.findall() - Find All Matches
How to find all matches of a regular expression using re.findall()? The re.findall() function allows you to find all matches of a given regular expression in a target string. import re l = re.findall(pattern, string, flags=0) Where: pattern is the regular expression string is the target string l is ... 2018-10-19, ∼3021🔥, 0💬

sys.argv - Command Line Argument List
How to retrieve command line arguments with sys.argv list? If execute a Python script file with the "python" command, you can use the sys.argv list to retrieve command line arguments. Note that the first argument, sys.argv[0], represents the Python script file name. Here is a Python script file exam... 2018-11-11, ∼3014🔥, 0💬

'for ... in' Statement with List of Tuples
How to use "for ... in" statements with a list of tuples in Python code? Usually, "for ... in" statements are used with simple lists. But you can also use a "for ... in" statement with a list of tuples. In this case, you can put multiple looping variables inside the loop item: for (v1, v2, ... ) in ... 2018-08-14, ∼2864🔥, 0💬

re.match() - Match from String Beginning
How to match the beginning part of a target string with a regular expression using re.match()? The re.match() function allows you to match the beginning part of a target string with of a given regular expression. import re m = re.match(pattern, string, flags=0) Where: pattern is the regular expressi... 2018-10-19, ∼2705🔥, 0💬

're' Module - Regular Expression Operations
Where to find tutorials on Python "re" Module? Here is a list of tutorials to answer many frequently asked questions compiled by FYIcenter.com team on Python "re" Module. What Is Python Module 're' re.search() - Search for First Match re.findall() - Find All Matches re.match() - Match from String Be... 2018-11-11, ∼2633🔥, 0💬

Printing Python Engine Information
How to print out Python engine information? Here is a Python example on how to print out Python engine information: >>> import sys >>> sys.getwindowsversion() sys.getwindowsversion(major=6, minor=1, build=7601, platform=2, service_pack='Service Pack 1') &... 2018-11-11, ∼2550🔥, 0💬

Setup Policy to Azure API Operations - 2017 Version
What are steps to set up policy to an Azure API Operation 2017 version? If you want to add policy statements to be executed between the Azure API and the backend service, you need to setup policy to the Azure API operation as shown in this tutorial: 1. Login to Azure Portal . 2. Go to API Management... 2018-06-12, ∼2514🔥, 0💬

What Is Python Module 're'
What Is Python module "re"? "re" is a Python internal module that provides regular expression matching and replacement operations similar to those found in Perl. Here are some important properties and functions provided by the "re" module: >>> import re >>> ... 2018-10-19, ∼2508🔥, 0💬

All rights in the contents of this web site are reserved by the individual author. fyicenter.com does not guarantee the truthfulness, accuracy, or reliability of any contents.