Describe how tuples can be useful with loops over lists and dictionaries, and give python code examples. create your own code examples.

The explained gives the merits of tuples over the lists and dictionaries.

Explanation:

Tuples can be used to store the related attributes in a single object without creating a custom class, or without creating parallel lists..

For example, if we want to store the name and marks of a student together, We can store it in a list of tuples simply:

data = [('Jack', 90), ('Rochell', 56), ('Amy', 75)]

# to print each person's info:

for (name, marks) in data:

       print(name, 'has', marks, 'marks')

# the zip function is used to zip 2 lists together..

Suppose the above data was in 2 parallel lists:

names = ['Jack', 'Rochell', 'Amy']

marks = [90, 56, 75]

# then we can print same output using below syntax:

for (name, marks) in zip(names, marks):

       print(name, 'has', marks, 'marks')

# The enumerate function assigns the indices to individual elements of list..

# If we wanted to give a index to each student, we could do below:

for (index, name) in enumerate(names):

       print(index, ':', name)

# The items method is used in dictionary, Where it returns the key value pair of

# the dictionary in tuple format

# If the above tuple list was in dictionary format like below:

marksDict = {'Jack': 90, 'Rochell': 56, 'Amy': 75}

# Then using the dictionary, we can print same output with below code:

for (name, marks) in marksDict.items():

       print(name, 'has', marks, 'marks')

i've had the same problem. i generally just ignore it, as a ton of these "verified answers" are completely wrong.