What is the utility of the built-in function help()?

Q. What is the utility of the built-in function help()?

Answer =

Python's built-in function help() is very useful. When it is provided with a program name or a module-name or a function-name as an argument, it displays the documentation of the argument as help. It also displays the doc-string within its passed-argument's definition.

For example:

>>> help (math)

• It will display the documentation related to module math.

• It can even take function name as argument.

For example:

>>>help (math.sqrt())

• The above code will list the documentation of math.sqrt() function only.