📝 Introduction of Enumerate

A skill necessary for programming is reading documentation to learn how to use functions.

For example, consider enumerate.

Built-in Function

enumerate(iterable, start=0)

Return an enumerate object. iterable must be a sequence, an iterator, or some other object which supports iteration. The __next__() method of the iterator returned by enumerate() returns a tuple containing a count (from start which defaults to 0) and the values obtained from iterating over iterable.

>>> seasons = ['Spring', 'Summer', 'Fall', 'Winter']
>>> list(enumerate(seasons))
[(0, 'Spring'), (1, 'Summer'), (2, 'Fall'), (3, 'Winter')]
>>> list(enumerate(seasons, start=1))
[(1, 'Spring'), (2, 'Summer'), (3, 'Fall'), (4, 'Winter')]

Practice with enumerate

The Eagles wide receivers have Batman nicknames. Let’s use enumerate to match the wide receiver with the correct nickname.

wideReceivers = ['A. J. Brown', 'DeVonta Smith', 'Quez Watkins']
nicknames = ['Swole Batman', 'Skinny Batman', 'Fast Batman']

print(list(enumerate(wideReceivers)))

[(0, 'A. J. Brown'), (1, 'DeVonta Smith'), (2, 'Quez Watkins')]

for count, realName in enumerate(wideReceivers):
    print(f'{realName} is also known as {nicknames[count]}.')

A. J. Brown is also known as Swole Batman.
DeVonta Smith is also known as Skinny Batman.
Quez Watkins is also known as Fast Batman.