Create multiple listsΒΆ

Create multiple lists.
obj = {}

for i in range(1, 21):
    obj[str(i)] = []

print(obj)

Output:

{'1': [], '8': [], '14': [], '5': [], '17': [], '9': [], '2': [], '7': [], '16': [], '19': [], '4': [], '18':
[], '13': [], '3': [], '15': [], '11': [], '20': [], '6': [], '12': [], '10': []}