Question

Transforming a List

One typical kind of list processing is to transform the elements of a list, producing a copy of the list but with the elements transformed.

Write a function definition of add_sizes using a for loop that takes a list of strings, say strings, and returns a list of pairs consisting of the elements of strings together with their lengths.

def add_sizes(strings):
"""
Return the list of pairs consisting of the elements of strings together
with their sizes.

Parameters:
list<str>: a list a strings

Return:
list<tuple<str, int>>: a list of strings and their corresponding
lengths
  
"""
# add your code here

Answer 1

Here is the completed code for this problem. Comments are included, go through it, learn how things work and let me know if you have any doubts or if you need anything to change. If you are satisfied with the solution, please rate the answer. Thanks

#code

def add_sizes(strings):
    """
    Return the list of pairs consisting of the elements of strings together
    with their sizes.

    Parameters:
    list<str>: a list a strings

    Return:
    list<tuple<str, int>>: a list of strings and their corresponding
    lengths

    """
    #creating an empty list
    result=[]
    #looping through each string in strings
    for s in strings:
        #appending to result list a tuple containing s and length of s
        result.append((s,len(s)))
    #returning the result
    return result


#testing the above method using a list of strings
strings=['hello','how','is','Python','?']
print(add_sizes(strings)) #[('hello', 5), ('how', 3), ('is', 2), ('Python', 6), ('?', 1)]

#output

[('hello', 5), ('how', 3), ('is', 2), ('Python', 6), ('?', 1)]