Control & Math

14. Control Statements

Control statements change the normal execution of a program.

break

Stops a loop immediately.

for i in range(10):



    if i == 5:

        break



    print(i)

continue

Skips the current repetition and continues with the next one.

for i in range(10):



    if i == 5:

        break



    print(i)

pass

Does nothing. It is used as a placeholder when you want to write the code later.

def my_function():

    pass



if True:

    pass

15. Math Functions

MicroPython includes built-in mathematical functions and a math module for more advanced calculations.

Built-in math functions

Function	Description	Example
`abs()`	Absolute value	`abs(-5)` → 5
`round()`	Rounds a number	`round(3.7)` → 4
`min()`	Smallest value	`min(2, 5, 1)` → 1
`max()`	Largest value	`max(2, 5, 1)` → 5
`sum()`	Adds list values	`sum([1,2,3])` → 6

Example:

numbers = [10, 20, 30]



print("Total:", sum(numbers))

print("Minimum:", min(numbers))

print("Maximum:", max(numbers))

Using the math module

Import the module before using its functions.

import math



print(math.sqrt(25))       # Square root

print(math.pow(2, 3))      # Power

print(math.pi)             # Pi

print(math.floor(4.8))     # Round down

print(math.ceil(4.2))      # Round up

Some useful trigonometric functions include:

import math



angle = math.radians(90)



print(math.sin(angle))

print(math.cos(angle))