Q. Describe the different styles of functions in Python using appropriate examples.


Answer =

1. Built-in functions: - These are pre-defined functions and are always available for use.

For example: -
len(), type(), int(), input() etc.

2. Functions defined in modules: - These functions are pre-defined in particular modules and can only be used when the corresponding module is imported.

For example, if you to use pre-defined functions inside a module, say sin(), you need to first import the module math (that contains definition of sin() ) in your program.

3. User defined functions: - These are defined by the programmer. As programmers you can create your own functions.

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