Here’s an example of how to use variables in Python 3:
# integer variable
my_int = 42
print(my_int)
# string variable
my_string = "Hello, World!"
print(my_string)
# floating-point variable
my_float = 3.14
print(my_float)
# boolean variable
my_bool = True
print(my_bool)
In this example, we declare and initialize four different variables with different data types: an integer, a string, a floating-point number, and a boolean. We then use the print() function to output the value of each variable to the console.
Note that in Python, you don’t need to explicitly declare variables with a particular data type - the interpreter infers the data type based on the value that you assign to the variable. In many cases, this can make programming in Python more convenient and flexible.