Increase the value of a variable #
You can increase the value of a variable by performing some type of calculation on the variable, then reassign it back to the same variable.
For example, you can increase a value of a variable by 1 like so:
x = 10
x = x + 1
print(x) # output: 11
In the example above, the variable x is created with the value 10. The value is then incremented by 1 with the code x + 1 and then reassigned back to the variable x.
However, you can also increase the value of a variable by using what's called compound assignment operator, which is a shorthand way of performing some action on the variable and reassigning it back to the original variable.
We can increase the value of a variable with the operator += like so:
x = 10
x += 1 # equivalent to x = x + 1
print(x) # output: 11
Exercise #
- Rewrite the code on line 3 to use
+=to increase the value ofxby1 - Value of
xshould be21
Getting Started with Python
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