IslandT: Python Tutorial — Chapter 3

In this chapter, I am going to show you all how to create a python variable.

Python variable does not have a fixed type which means you can actually change the variable type by first assigning it to a number but later changing it to a string, Python will not complain about this!

aname = "Hello, World"
print(aname) # Hello World
aname = 10
print(aname) # 10

If you want to use the Python variable which is outside of a function within that function itself then you will need to declare it as a global variable within the function.

value = 5
def print_value():
    global value
    value += 1
    print(value)  # increase the value of a variable by 1 which is equal to 6

You can specify the data type of a variable with casting but basically, it is the same outcome as before if you change it later to a string because Python does not have type safety like Java or C!

value = int(10)
print(value) # 10
value = 13
print(value) # 13
value= "Hello World!"
print(value) # Hello World!

That is it, I will start to load you with a complex tutorial but as always let us starts it with this easy one first!