Flash cards
Review the key moves
What is the main idea behind Python - Global Variables?
Lesson checks
Practice each idea before moving on
Short Mimo-style checks built from this lesson's code, terms, and sequence.
Which statement best captures the main point of this lesson?
Complete the missing token from the example code.
x = "___"Put the learning moves in the order that makes the concept easiest to apply.
Global Variables
Variables that are created outside of a function (as in all of the examples in the previous pages) are known as global variables.
Global variables can be used by everyone, both inside of functions and outside.
Example
x = "awesome"
def myfunc():
print("Python is " + x)
myfunc()If you create a variable with the same name inside a function, this variable will be local, and can only be used inside the function. The global variable with the same name will remain as it was, global and with the original value.
Example
x = "awesome"
def myfunc():
x = "fantastic"
print("Python is " + x)
myfunc()
print("Python is " + x)The global Keyword
Normally, when you create a variable inside a function, that variable is local, and can only be used inside that function.
To create a global variable inside a function, you can use the global keyword.
globalAlso, use the global keyword if you want to change a global variable inside a function.
global