how to use comma code in python

Question

Comma Code

Say you have a list value like this:

characters = ["Thor", "Thanos", "Black Panther", "Iron Man", "Hulk", "Batman", "Captain America"]

Write Python code that coverts the list into a string with all the items separated by a comma and a space, with 'and' inserted before the last item. For example, converting the characters list look like this:

'Thor, Thanos, Black Panther, Iron Man, Hulk, Batman and Captain America.'

Answer 1

def list_to_string(lst):

if len(lst) == 0:

return ""

elif len(lst) == 1:

return lst[0]

else:

return ', '.join(lst[:-1]) + ' and ' + lst[-1]

characters = ["Thor", "Thanos", "Black Panther", "Iron Man", "Hulk", "Batman", "Captain America"]

result = list_to_string(characters)

print(result + '.')