SunFounder ESP32 User Manual

SunFounder ESP32 Starter Kit
>>> %Run -c $EDITOR_CONTENT
('pear', 'apple', 'grape')
Print two messages and specify the separator:
print("Hello", "how are you?", sep="---")
>>> %Run -c $EDITOR_CONTENT
Hello---how are you?
3.6.4 Variables
Variables are containers used to store data values.
Creating a variable is very simple. You only need to name it and assign it a value. You don’t need to specify the data
type of the variable when assigning it, because the variable is a reference, and it accesses objects of different data types
through assignment.
Naming variables must follow the following rules:
• Variable names can only contain numbers, letters, and underscores
• The first character of the variable name must be a letter or underscore
• Variable names are case sensitive
Create Variable
There is no command for declaring variables in MicroPython. Variables are created when you assign a value to it for
the first time. It does not need to use any specific type declaration, and you can even change the type after setting the
variable.
x = 8 # x is of type int
x = "lily" # x is now of type str
print(x)
>>> %Run -c $EDITOR_CONTENT
lily
Casting
If you want to specify the data type for the variable, you can do it by casting.
x = int(5) # y will be 5
y = str(5) # x will be '5'
z = float(5) # z will be 5.0
print(x,y,z)
>>> %Run -c $EDITOR_CONTENT
5 5 5.0
282 Chapter 3. For MicroPython User

SunFounder ESP32 Specifications

General

Brand	SunFounder
Model	ESP32
Category	Controller
Language	English