Python Tutorials
Python Introduction
Python Get Started
Python Syntax
Python Comments
Python Variables
Python Data Types
Python Numbers
Python Casting
Python Strings
Python Booleans
Python Operators
Python Lists
Python Tuples
Python Sets
Python Dictionaries
Python If...Else
Python While Loops
Python For Loops
Python Functions
Python Lambda
Python Arrays
Python Classes/Objects
Python Inheritance
Python Iterators
Python Scope
Python Modules
Python Dates
Python Math
Python JSON
Python RegEx
Python PIP
Python Try..Except
Python User Input
Python String Formatting
Python File Handling
Python File Handling
Python Read Files
Python Create/Write Files
Python Delete Files
Python Modules
Python Numpy
Python Pandas
Python SciPy
Previous
Python Numbers
Python Numbers
There are three numeric types in Python:
intfloatcomplex
Variability of number types is created when you assign value to them:
Example
x = 1
# int
y = 2.8 # float
z = 1j # complex
To verify the type of any object in Python, use the type () function:
Example
print(type(x))
print(type(y))
print(type(z))
Int
Int, or whole number, is a whole, positive or negative value, without decimals, of infinite length.
Example
Integers
x = 1
y = 35656222554887711
z =
-3255522
print(type(x))
print(type(y))
print(type(z))
Float
Float, or "floating point number" is a number, positive or negative, containing one or more decimals.
Example
Floats
x = 1.10
y = 1.0
z = -35.59
print(type(x))
print(type(y))
print(type(z))
Float can also be scientific numbers with an "e" to indicate the power of 10.
Example
Floats
x = 35e3
y = 12E4
z = -87.7e100
print(type(x))
print(type(y))
print(type(z))
Complex
Complex numbers are marked with a "j" as the imaginary component:
Example
Complex
x = 3+5j
y = 5j
z = -5j
print(type(x))
print(type(y))
print(type(z))
Type Conversion
You can convert from one form to another in the form of int(),float(), and complex():
Example
Convert from one type to another:
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))
Note: You cannot convert complex numbers to another type of number.
Random Number
Python does not have a random function () for creating random numbers, but Python has a built-in module called random that can be used to create random numbers:
Example
Import the random() module, and display a random number between 1 and 9:
import random
print(random.randrange(1, 10))