Numbers / Integers

Numbers are the foundation of every programming language. In this module, we will learn how to use numbers in Python.

There are three numeric types in Python:

• int (e.g. 2, 4, 20)

  • bool (e.g. False and True, acting like 0 and 1)

• float (e.g. 5.0, 1.6)

• complex (e.g. 5+6j, 4-3j)

Integers (int)

• int is a whole number, without decimals, of unlimited length. e.g. 2, -2, 0, -0, 2147483647, -2147483648

positive_int = 2
negative_int = -2
zero = 0

Boolean (bool)

Booleans represent the truth values False and True. The two objects representing the values False and True are the only Boolean objects.

The Boolean type is a subtype of the integer type, and Boolean values behave like the values 0 and 1, respectively, in almost all contexts, the exception being that when converted to a string, the strings "False" or "True" are returned, respectively. example:

is_raining = True
is_cloudy = False

Float (float)

Float, or "floating point number" is a number, positive or negative containing one or more decimals. Example:

  float_number = 7.0
  # Another way of declaring float is using float() function.
  float_number_via_function = float(7)
  float_negative = -35.59

References

Python Documentation

W3Schools