Python variables are typeless

Variable definitions are typeless

Python

a_variable = 1

instead of

C/C++/Java

int a_variable = 1

Python’s type system is dynamic

a_variable = "this is a string"
print(a_variable)
a_variable = 123 # this is a number
print(a_variable)

Python supports optional types since Python 3.5

a_variable: int = 1

but nothing forbids

a_variable: int = "this is a string"

The optional typing in Python (called type hints) is not used in this workshop.