使用循环在两个数组或列表中查找匹配值

Question

我的语法如下：

a = []

data = ['2007-01-03', '2007-01-04', '2007-01-05','2007-01-03', '2007-01-04', '2007-01-05']
data1 = ['2007-01-04', '2007-01-05']

data = np.array(data)
data1 = np.array(data1)

for idx, day in enumerate(data):
    for idx1, day1 in enumerate(data1):
          print(np.where(day == day1)[0])

结果如下：

[]
[0]
[]
[]
[0]
[]

我应该如何修改语法以获得以下结果？

[1, 2, 4, 5]

Answer 1

res = [key for key, val in enumerate(data) if val in data1]
print(res)

输出：

[1, 2, 4, 5]