what is var in python code example

Example 1: how to create a variable in python

variable1 = "value" # string
variable2 = 1000000 # integer
variable3 = 10000.0 # real/float
variable4 = True # boolean: True or False

Example 2: declare double python

def function(explicit_number: type) -> type:
    pass

Example 3: python variables

var = 640
number = 604
tr = 623