Python – Remove given character from first element of Tuple

Given a Tuple list, remove K character from 1st element of Tuple being String.

Input : test_list = [(“GF$g!”, 5), (“!i$s”, 4), (“best!$”, 10)], K = ‘$’ 

Output : [(‘GFg!’, 5), (‘!is’, 4), (‘best!’, 10)] 

Explanation : First element’s strings K value removed. 

Input : test_list = [(“GF$g!”, 5), (“best!$”, 10)], K = ‘$’ 

Output : [(‘GFg!’, 5), (‘best!’, 10)] 

Explanation : First element’s strings K value removed.

Method #1 : Using replace() + list comprehension

In this, we use replace() to perform the task of removing of K character and list comprehension to reform tuple.

Python3

# Python3 code to demonstrate working of
# Remove K character from first element of Tuple
# Using replace() + list comprehension

# initializing list
test_list = [("GF ! g !", 5), ("! i ! s", 4), ("best !!", 10)]

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

# initializing K
K = "!"

# replace with empty string removes the desired char.
res = [(sub[0].replace(K, ''), sub[1]) for sub in test_list]

# printing result
print("The filtered tuples : " + str(res))

Output

The original list is : [('GF!g!', 5), ('!i!s', 4), ('best!!', 10)]
The filtered tuples : [('GFg', 5), ('is', 4), ('best', 10)]

Method #2 : Using translate() + list comprehension

In this, we perform task of removal using translate(), which needs conversion to ASCII using ord(), and replaced with an empty character.

Python3

# Python3 code to demonstrate working of
# Remove K character from first element of Tuple
# Using translate() + list comprehension

# initializing list
test_list = [("GF ! g !", 5), ("! i ! s", 4), ("best !!", 10)]

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

# initializing K
K = "!"

# translation after conversion to ascii number
res = [(sub[0].translate({ord(K): None}), sub[1]) for sub in test_list]

# printing result
print("The filtered tuples : " + str(res))

Output

The original list is : [('GF!g!', 5), ('!i!s', 4), ('best!!', 10)]
The filtered tuples : [('GFg', 5), ('is', 4), ('best', 10)]

Method #3: Using for loop

Python3

# Python3 code to demonstrate working of
# Remove K character from first element of Tuple

# initializing list
test_list = [("GF!g!", 5), ("!i!s", 4), ("best!!", 10)]

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

# initializing K
res1 = []
K = "!"
for i in test_list:
    res = ""
    for j in i[0]:
        if(j != K):
            res += j
    x = (res, i[1])
    res1.append(x)


# printing result
print("The filtered tuples : " + str(res1))

Output

The original list is : [('GF!g!', 5), ('!i!s', 4), ('best!!', 10)]
The filtered tuples : [('GFg', 5), ('is', 4), ('best', 10)]