Pandas for Everyone: Python Data Analysis, 2nd Edition

X

Conditionals (if-elif-else)

Conditional statements allow your script or program to have “control flow”. We have the option of using the if, elif, and else statements.

Let’s combine these examples into a simplified version of a popular programming interview problem: Fizz Buzz.

If the number we want to check is a multiple of 2, we want to print "fizz". We can use the modulo operator in Python, %, to give us the remainder of a number after division. So, a number is a multiple of 2 if the modulo (i.e., remainder) is 0. If that statement is true it will run the code in that if block (denoted by the indentation).

my_num = 4

if my_num % 2 == 0:
  print("fizz")

fizz

If we put multiple if statements after one another it will run through each of them ...