Python provides a set of built-in functions that are always available for use. These functions perform common tasks and operations, simplifying coding and reducing the need to write repetitive code. Built-in functions cover a range of functionalities, from mathematical operations to type conversions.

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Mathematical Functions

abs()

Returns the absolute value of a number.

Syntax:

abs(number)

Example:

print(abs(-5))  # Output: 5

pow()

Returns the power of a number, optionally with a modulus.

Syntax:

pow(base, exp[, mod])

Example:

print(pow(2, 3))         # Output: 8
print(pow(2, 3, 5))      # Output: 3

round()

Rounds a floating-point number to a specified number of decimal places.

Syntax:

round(number[, ndigits])

Example:

print(round(3.14159, 2))  # Output: 3.14

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