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Python – Remove given character from first element of Tuple
  • Last Updated : 02 Sep, 2020

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 comprehenson

In this, we use replace() to perform task of removal 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 comprehenson
  
# 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 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)]

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