splitting duos

split_duos.py

names = ['Albert', 'Allison & Peter', 'John & Paul', 'Mary', 'Ann']

def r_enumerate(iterable):
    return reversed(tuple(enumerate(iterable)))

for i, name in r_enumerate(names):
    if '&' in name:
        a, b = name.split('&')
        names[i] = a.strip()
        names.insert(i + 1, b.strip())
        
print(names)

# result printed:
# ['Albert', 'Allison', 'Peter', 'John', 'Paul', 'Mary', 'Ann']