Numbers

Info:

You can use numbers inside Python and make all kind of mathematical operations with them, without an issue.

Types:

x = 1       # int
y = 2.8     # float
z = 1j      # complex

For example:

print (3 * 4.5)

An this will result in

13.5

You can also use parenthesis to specify the order of the operations like in real mathematics. For example:

print(3 * 4 + 2)

will result in

14

as it will do the multiplication first since there are no paranthesis. And in the example below:

print(3 * (4 + 2) 

will result in

18

because it will take the sum first and then multiply with 3.

Handling large numbers:

When number is large, it'll become difficult to read. For example:

count = 10000000000

In this case, to make it easier to read, you can use underscore to group the digits. Here's an example:

count = 10_000_000_000

When storing or displaying these numbers, Python ignores the underscore. The underscore works both for integers and floats.

Converting between number types:

For certain operations, you may need an integer or a float..etc numbers. You can change those types like below. You can use the same technic to convert between other data types as well such as string..etc.

x = 1     # int
y = 2.8   # float
z = 1j    # complex

# convert from int to float:
a = float(x)

# convert from float to int:
b = int(y)

# convert from int to complex:
c = complex(x)

print(a)
print(b)
print(c)

print(type(a))
print(type(b))
print(type(c))

With the method above, you will see that the data types will be converted succesfully.