Built-in Functions

Table of contents

1. Description
2. Invocation
3. Example
   1. Line 1
   2. Line 2
   3. Line 3
   4. Line 4
   5. Line 5

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Description

Built-in functions are pre-installed with the Python language. They do not need to be imported or created by the programmer. Common built-in functions are print(), input(), and len()

• Python Docs: Built-in Functions

Invocation

When invoking (calling/executing) a function, you type it’s name followed by opening and closing parenthesis.

• Arguments: Some functions accept arguments (input), which are placed inside the parenthesis.
• Return Value: Some functions produce output, and return it to its caller.

Example

Line 1

• Function: input
• Argument(s): 'Hi! What\'s your name? '
• Return Value: User input

Line 2

• Function: print
• Argument(s): n-a
• Return Value: n-a

Line 3

• Function: print
• Argument(s): f'Nice to meet you, {name.title()}.'
• Return Value: n-a

Line 4

• Function: len
• Argument(s): name (a variable)
• Return Value: length of variable

Line 5

• Function: print
• Argument(s): f'Your name has {characters} characters.'
• Return Value: n-a

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