Python help() Built in Function

Python help() is a built-in function that invokes the built-in help system. The help system provides information about the syntax, parameters, return values and examples of Python objects such as modules, classes, functions, etc.

Here are some examples of how to use Python help():

To get the general help message:

help()

To get the help message for a specific object:

help(print) # prints the help message for the print function
help(list) # prints the help message for the list class
help(math) # prints the help message for the math module

To get the help message for a specific attribute or method of an object:

help(list.append) # prints the help message for the append method of list class
help(math.pi) # prints the help message for the pi attribute of math module

You can also use the argparse module to create a command-line interface for your Python script that displays a help message when invoked with the -h or --help option. For example:

import argparse
parser = argparse.ArgumentParser(description="This is my help")
args = parser.parse_args()

If you have any questions about this code, you can drop a line in comment.

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