Python | Check if element is present in tuple

Sometimes, while working with data, we can have a problem in which we need to check if the data we are working with has a particular element. Let’s discuss certain ways in which this task can be performed. 

Method #1: Using loop

This is a brute force method to perform this task. In this, we iterate through the tuple and check each element if it’s our, if found we return True. 

Python3

# Python3 code to demonstrate working of
# Check if element is present in tuple
# using loop

# initialize tuple
test_tup = (10, 4, 5, 6, 8)

# printing original tuple
print("The original tuple : " + str(test_tup))

# initialize N
N = 6

# Check if element is present in tuple
# using loop
res = False
for ele in test_tup:
    if N == ele:
        res = True
        break

# printing result
print("Does tuple contain required value ? : " + str(res))

Output

The original tuple : (10, 4, 5, 6, 8)
Does tuple contain required value ? : True

Time complexity: O(n)

Auxiliary space: O(n), where n is length of tuple.

Method #2: Using in operator 

It is used to perform this task. It is a one-liner and recommended to perform this task. 

Python3

# Python3 code to demonstrate working of
# Check if element is present in tuple
# Using in operator

# initialize tuple
test_tup = (10, 4, 5, 6, 8)

# printing original tuple
print("The original tuple : " + str(test_tup))

# initialize N
N = 6

# Check if element is present in tuple
# Using in operator
res = N in test_tup

# printing result
print("Does tuple contain required value ? : " + str(res))

Output

The original tuple : (10, 4, 5, 6, 8)
Does tuple contain required value ? : True

Method 3: Using list comprehension method 

Python3

t = (10, 4, 5, 6, 8)
n = 6
x = [i for i in t if i == n]
print(["yes" if x else "no"])

Output

['yes']

Method 4: Using lambda function 

Python3

t = (10, 4, 5, 6, 8)
n = 6
x = tuple(filter(lambda i: (i == n), t))
print(["yes" if x else "no"])

Output

['yes']

Method 5: Using the enumerate function

Python3

t = ('10', '4', '5', '6', '8')
n = 6
x = [int(i) for i in t if int(i) == n]
print(["yes" if x else "no"])

Output

['yes']

Method 6 : Using count() method

Python3

# Python3 code to demonstrate working of
# Check if element is present in tuple
# using loop

# initialize tuple
test_tup = (10, 4, 5, 6, 8)

# printing original tuple
print("The original tuple : " + str(test_tup))

# initialize N
N = 6

# Check if element is present in tuple
# using loop
res = False
if(test_tup.count(N) >= 1):
    res = True
# printing result
print("Does tuple contain required value ? : " + str(res))

Output

The original tuple : (10, 4, 5, 6, 8)
Does tuple contain required value ? : True

Method 7: Using try/except and index:

Python3

# Python3 code to demonstrate working of
# Check if element is present in tuple
# using loop

# initialize tuple
test_tup = (10, 4, 5, 6, 8)

# printing original tuple
print("The original tuple : " + str(test_tup))

# initialize N
N = 6

# Check if element is present in tuple
# using loop
res = False
try:
    test_tup.index(N)
    res = True
except ValueError:
    pass
# printing result
print("Does tuple contain required value ? : " + str(res))
#this code is contributed by edula vinay kumar reddy

Output

The original tuple : (10, 4, 5, 6, 8)
Does tuple contain required value ? : True

Time complexity: O(n)

Auxiliary Space : O(1)

Method 8: Using recursion method:

Python3

# Python3 code to demonstrate working of
# Check if element is present in tuple
# using recursion method

#defining recursion function
def value_present(start,lst,value):
  if start==len(lst):  #base condition
    return False
  if lst[start]==value:  #checking lst[start] is value or not
    return  True
  return value_present(start+1,lst,value)  #recursive call

# initialize tuple
test_tup = (10, 4, 5, 6, 8)

# printing original tuple
print("The original tuple : " + str(test_tup))

# initialize N
N = 6

res=value_present(0,test_tup,N)
print("Does tuple contain required value ? : " + str(res))
#this code is contributed by tvsk

Output

The original tuple : (10, 4, 5, 6, 8)
Does tuple contain required value ? : True

Time complexity: O(n)

Auxiliary Space : O(n)