Python | Divide constant to Kth Tuple index

Many times, while working with records, we can have a problem in which we need to change the value of tuple elements. This is a common problem while working with tuples. Let’s discuss certain ways in which N can be divided by Kth element of tuple in list.

Method #1 : Using loop
Using loops this task can be performed. In this, we just iterate the list to change the Kth element by predefined value N in code.

# Python3 code to demonstrate working of
# Divide constant to Kth Tuple index
# Using loop

# Initializing list
test_list = [(4, 5, 6), (7, 4, 2), (9, 10, 11)]

# printing original list
print("The original list is : " + str(test_list))

# Initializing N
N = 3

# Initializing K
K = 1

# Divide constant to Kth Tuple index
# Using loop
res = []
for i in range(0, len(test_list)):
    res.append((test_list[i][0], test_list[i][K] // N, test_list[i][2]))

# printing result
print("The tuple after dividing N to Kth element : " + str(res))

Output :

The original list is : [(4, 5, 6), (7, 4, 2), (9, 10, 11)]
The tuple after dividing N to Kth element : [(4, 1, 6), (7, 1, 2), (9, 3, 11)]

Method #2 : Using list comprehension
This method is having the same approach as the above method, just reduces lines of code using list comprehension functionality to make code compact by size.

# Python3 code to demonstrate working of
# Divide constant to Kth Tuple index
# Using list comprehension

# Initializing list
test_list = [(4, 5, 6), (7, 4, 2), (9, 10, 11)]

# printing original list
print("The original list is : " + str(test_list))

# Initializing N
N = 3

# Initializing K
K = 1

# Divide constant to Kth Tuple index
# Using list comprehension
res = [(a, b // N, c) for a, b, c in test_list]

# printing result
print("The tuple after dividing N to Kth element : " + str(res))

Output :

The original list is : [(4, 5, 6), (7, 4, 2), (9, 10, 11)]
The tuple after dividing N to Kth element : [(4, 1, 6), (7, 1, 2), (9, 3, 11)]