python exists in array code example

Example 1: how to check if value is in list python

>>> letters = [a,b,c,d,e]
>>> 'a' in letters:
True

Example 2: if string is in array python

if item in my_list:
    # whatever

Example 3: how to check an array for a value in python

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

Example 4: python check array exists

array = [1,2,3,4]
exists_2 = 2 in array
print(exists_2) # True
exists_5 = 5 in array
print(exists_5) # False