When it is required to get every element from a list of strings except a specified letter, a list comprehension and the ‘append’ method is used.
Below is a demonstration of the same −
Example
my_list = ["hi", "is", "great", "pyn", "pyt"]
print("The list is :")
print(my_list)
my_key = 'n'
print("The value for key is ")
print(my_key)
my_result = []
for sub in my_list:
my_result.append(''.join([element for element in sub if element == my_key]))
print("The result is :")
print(my_result)Output
The list is : ['hi', 'is', 'great', 'pyn', 'pyt'] The value for key is n The result is : ['', '', '', 'n', '']
Explanation
A list of strings is defined and is displayed on the console.
The value for a key is defined and displayed on the console.
An empty list is defined.
The original list is iterated over using list comprehension, and checked to see if an element is equal to the key.
If so, it is appended to the empty list.
This list is displayed as the output on the console.