python - 多次遍历三个列表，在每次迭代中从列表中依次选择一个元素

Question

我想遍历三个列表中的每一个，在每次迭代中从每个列表中依次选择一个元素。

subjects=["Americans","Indians"]
verbs=["plays","watch"]
objects=["Baseball","cricket"]
for i,j,k in zip(subjects,verbs,objects):
    print(i,j,k)

上面的代码给出的输出如下：

Americans plays Baseball

Indians watch cricket

但预期的输出是：

Americans play Baseball.

Americans play Cricket.

Americans watch Baseball.

Americans watch Cricket.

Indians play Baseball.

Indians play Cricket.

Indians watch Baseball.

Indians watch Cricket.

标签： pythonfor-loopiteratornested-loopsstring-interning

Answer 1

用于itertools.product获取所有可能的组合，然后打印它们

>>> subjects=["Americans","Indians"]
>>> verbs=["plays","watch"]
>>> objects=["Baseball","cricket"]
>>> 
>>> from itertools import product
>>> for x in product(subjects,verbs,objects):
...     print('{} {} {}'.format(*x))
... 
Americans plays Baseball
Americans plays cricket
Americans watch Baseball
Americans watch cricket
Indians plays Baseball
Indians plays cricket
Indians watch Baseball
Indians watch cricket