¿Cómo se pasa un argumento a una función principal en Python?

How do you pass an argument to a main function in Python?

Command Line Args Python Code The main() above begins with a CS106A standard line args = sys. argv[1:] which sets up a list named args to contain the command line arg strings. This line works and you can always use it.

Creating functions using the CLI is very similar to creating functions in scripts. Type your function name and arguments on the first line and append a colon. After that the Pyhton interpreter asks for further input. Now you have to indent the next code you want write in the function body.

Python has a variety of native libraries, available by a simple import. Argparse — short for argument parser — is a library that allows us to define command-line arguments. These arguments can be either required or optional. Additionally, we can define the data type and helper text for each argument.

It is a list of command line arguments. len (sys.argv) provides the number of command line arguments. sys.argv [0] is the name of the current Python script. Example: Let’s suppose there is a Python script for adding two numbers and the numbers are passed as command-line arguments. Python getopt module is similar to the getopt () function of C.

It takes the name of the module, class and method you want to call and the parameters you want to pass. I call it PyRun and left off the .py extension and made it executable with chmod +x PyRun so that I can just call it quickly as follow: Here is a sample module to show how it works.

Pass list as command line argument in Python. The arguments that are given after the name of the program in the command line shell of the operating system are known as Command Line Arguments. Python provides various ways of dealing with these types of arguments. One of them is sys module.