check if value exists in list python code example

Example 1: how to check an element in a list in python

thislist = ["apple", "banana", "cherry"]
if "apple" in thislist:
  print("Yes, 'apple' is in the fruits list")

Example 2: how to check if value is in list python

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

Example 3: python how to check in a list

# app.py

listA = ['Stranger Things', 'S Education', 'Game of Thrones']

if 'Dark' in listA:
    print("Yes, 'S Eductation' found in List : ", listA)
else:
    print("Nope, 'Dark' not found in the list")

Example 4: how to check an array for a value in python

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

Example 5: check if value exists in list python

def search(lst, x):
    if not x in lst:
        return False
    return True


if __name__ == "__main__":
    lst = [1, 2, 3, 4, 5]
    print(search(lst, 2))
    print(search(lst, 6))

Example 6: python find if part of list is in list

'''    
    check if list1 contains all elements in list2
'''
result =  all(elem in list1  for elem in list2)
if result:
    print("Yes, list1 contains all elements in list2")    
else :
    print("No, list1 does not contains all elements in list2"