if something is in list python code example

Example 1: python check if list contains

# To check if a certain element is contained in a list use 'in'
bikes = ['trek', 'redline', 'giant']
'trek' in bikes
# Output:
# True

Example 2: how to check an array for a value in python

s = set(a)
if 7 in s:
  # do stuff