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Introduction to Data Science with Python

Comparisons

Explore how to apply comparison operators like greater than, less than, and equality in Python. Learn to combine conditions using logical operators and write conditional statements using if, else, and elif to control your program's actions based on various criteria.

We'll cover the following...

Let’s talk about the following:

  • Comparison operators
  • Logical operators
  • Conditional statements

Comparison operators

Comparison operators allow us to compare two elements. These operators include the greater than, the less than, the equal to, and the not equal to operators.

Let’s try each of these with examples:

Python 3.5
print('3 > 4 : ', 3 > 4) # 3 greater than 4?
print('3 < 4 : ', 3 < 4) # 3 less than 4?
print('2 >= 2 : ',2 >= 2) # 2 greater or equal to 2?
print('3 <= 4 : ', 3 <= 4) # 3 less or equal to 4?
# == is different than =, which is assignment operator
print('1 == 1 : ', 1 == 1)
# We can compare strings using == operator
print("'Tom' == 'TOM' : ",'Tom' == 'TOM')
print("'Tom' == 'Jim' : ",'Tom' == 'Jim')
print("'Tom' == 'Tom' : ",'Tom' == 'Tom')
# Not equal
print("'Tom' != 'Tom' : ", 'Tom' != 'Tom' )

Logical operators

Logical operators combine multiple conditions using the and and or ...