如何在Python中为两个文件嵌套两个循环

Question

我正在编写代码以读取两个文本文件，并打印第一个文件中每一行的输出以及文件2上的所有行

try:
    with open("file1.txt", "r") as ins , open("file2.txt", "r") as ins2 :

        array = []
        for line in ins:
        #print(line)
        # Start inner for
            for line2 in ins2:

                print(line + " : " + line2)


except IOError as e:
    print 'Operation failed: %s' % e.strerror

提交1个内容样本：

text1
text2
text3

文件2内容样本：

1985
1986
1987

输出必须为

text1 :1985
text1 :1986
text1 :1987
text2 :1985
text2 :1986
.
.
.
.