Refactoring example - change variable name

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examples/refactor/bad_variable.py

data = ['Mercury', 'Venus', 'Earth', 'Mars', 'Jupiter', 'Saturn']
for i in data:
    print(i)

examples/refactor/good_variable.py

celestical_objects = ['Mercury', 'Venus', 'Earth', 'Mars', 'Jupiter', 'Saturn']
for planet in celestical_objects:
    print(planet)