There are 4 main Python variable types:
1. INTEGER
Integer is a Python variable type that is mainly used for counting. They are whole numbers (e.g. 1, 2, 3, 4, 5). One way to tell if a number is a integer is that it usually doesn’t have a decimal places.
Remember that these variables take up less space or memory compared to other numerical variable which is float.
Example (*in Python 3):
Input:
x = 4
print(x)
type(x)
Output:
2
int
2. FLOAT (LONGS/DOUBLES)
Float Python variable type are real numbers. Just remember they are number with a decimal point (e.g. 1.2, 2.0, 3.5)
Example (*in Python 3):
Input:
x = 4.0
print(x)
type(x)
Output:
4.0
float
When dividing numbers in Python 2, it is important to use floats.
Example (*Python 2):
Input: 5/2
Output:2
The output should be 2. 5. But In Python 2 if you just divide without declaring either number as a float it will remove the decimal point. This is known as classic division. So the remedy is to declare either 5 or 2 as a float.
Example (*Python 2):
Input: 5.0/2
Output:2.5
#the following will also give the same output 5/2.0 or float(5)/2
You don’t need to worry about declaring floats for division in Python 3.
3. STRING
Strings is a variable type that stores letters, words, numbers and different characters. To simplify think of it as a phrase. The code for a string starts and ends with either ' or "
Example (*Python 3):
Input:
b= 'This is a string %$ 9 7c'
print(b)
type(b)
Output:
This is a string %$ 9 7c
str
4. BOOLEAN (LOGICAL)
Boolean are True or False variables. Usually these variables are the output of conditional statements. But we can directly declare them as well.
Example 1 (*Python 3):
Input:
c= False
print(c)
type(c)
Output:
False
bool
Example 2 (*Python 3):
Input:
d= 5>4
print(d)
type(d)
Output:
True
bool
For more details visit the official Python documentation:
https://docs.python.org/2/tutorial/introduction.html
Also you may check out a related post on how to perform operations on these different Python variable types.
