在for循环中传递多个参数的方法？

params = [(1, 'a'), (2, 'b'), (3, 'c')]
for num, letter in params:
    # 在循环体中使用num和letter
    print(num, letter)

params = {'num': 1, 'letter': 'a'}
for key, value in params.items():
    # 在循环体中使用key和value
    print(key, value)

nums = [1, 2, 3]
letters = ['a', 'b', 'c']
for num, letter in zip(nums, letters):
    # 在循环体中使用num和letter
    print(num, letter)