SunFounder Thales Kit, Manual, Page: 126 / 167

SunFounder Thales Kit for Raspberry Pi Pico, Release 1.0
– Case sensitive.
• Parameters (arguments) through which we pass values to a function. They are optional.
• The colon (:) marks the end of the function header.
• Optional docstring, used to describe the function of the function, we usually use triple quotes so that the doc-
string can be expanded to multiple lines.
• One or more valid Micropython statements that make up the function body. Statements must have the same
indentation level (usually 4 spaces).
• Each function needs at least one statement, but if for some reason there is a function that does not contain any
statement, please put in the pass statement to avoid errors.
• An optional
return
statement to return a value from the function.
Calling a Function
To call a function, add parentheses after the function name.
def my_function ():
print ( "Your first function" )
my_function()
>>> %Run -c $EDITOR_CONTENT
Your first function
The return Statement
The return statement is used to exit a function and return to the place where it was called.
Syntax of return
return [expression_list]
The statement can contain an expression that is evaluated and returns a value. If there is no expression in the statement,
or the
return
statement itself does not exist in the function, the function will return a
None
object.
def my_function ():
print ( "Your first function" )
print (my_function())
>>> %Run -c $EDITOR_CONTENT
Your first function
None
Here, None is the return value, because the return statement is not used.
122 Chapter 3. For MicroPython User