Enumerate returns tuples

---

examples/lists/enumerate_tuple.py

planets = ['Mercury', 'Venus', 'Earth', 'Mars', 'Jupiter', 'Saturn']

enu = enumerate(planets)
print(type(enu).__name__)
print(enu)

print('-----')

element = next(enu)
print(type(element))
print(element)

print('-----')

for tpl in enumerate(planets):
    print(tpl[0], tpl[1])

enumerate
<enumerate object at 0x7f7ede7e37c0>
-----
<class 'tuple'>
(0, 'Mercury')
-----
0 Mercury
1 Venus
2 Earth
3 Mars
4 Jupiter
5 Saturn