Question

Write a Python program (remove_first_char.py) that removes the first character from each item in a list of words. Sometimes, we come across an issue in which we require to delete the first character from each string, that we might have added by mistake and we need to extend this to the whole list. Having shorthands (like this program) to perform this particular job is always a plus.

Your program should contain two functions:

(1) remove_first(list): This function takes in a list as a parameter, and returns a new list of the same items, but with first character removed. No print in this function. Hint: You may use List Comprehension in this function. (Submit for 6 points)

Example:

Call: remove_first(['#apple', '#banana', '#cherry'])  ----> Return:  ['apple', 'banana', 'cherry']

(2) "__main__": In the main, you do the following: (Submit for 4 points)

a. When you start the program, print "Remove first character in list of strings"

b. Use the list in this program, hard coded. You may change for more testing.

c. printing original list.

d. Call the function remove_first, then print the new list after removing first character.

Here are example runs of the program:

Example 1:

Remove first character in list of strings
The original list:  ['#apple', '#banana', '#cherry']
The list after removing first characters: ['apple', 'banana', 'cherry']

Example 2:

Remove first character in list of strings
The original list:  ['$25.0', '$13.75', '$10.95', '$4.99']
The list after removing first characters: ['25.0', '13.75', '10.95', '4.99']

Answer 1

def remove_first(list):
    result = []
    for s in list:
        result.append(s[1:])
    return result


if __name__ == '__main__':
    print("Remove first character in list of strings")
    lst = ['#apple', '#banana', '#cherry']
    print("The original list:", lst)
    print("The list after removing first characters:", remove_first(lst))