如何使用Python或bash将两列数组中的数字替换为另一个文件中的相应字符串？

Question

我有两个文件，1个包含两列数字

文件1：

1  3

2  3

2  1

34 2

...

档案2：

1   CA1

2   CB1

3   CC1

34   DD1

...

因此，我希望我的输出文件看起来像这样

CA1 CC1

CB1 CC1

CC1 CA1

DD1 CB1

Answer 1

# Here is another approach  
name = dict()
with open('file2', 'r') as f:
    lines = f.readlines()

for line in lines:
    col = line.split()
    name[col[0]] = col[1]

with open('file1', 'r') as f:
    lines = f.readlines()

for line in lines:
    col = line.split()
    print('{} {}'.format(name[col[0]], name[col[1]]))

Answer 2

>>> with open('file2') as f:
...     values = [i.strip() for i in f if i.strip() != '']

>>> d = dict([i.split() for i in values])

>>> with open('file1') as f:
...     keys = [i.strip() for i in f if i.strip() != '']

>>> with open('file3', 'w') as f:
...     for i, j in [i.split() for i in keys]:
...         f.write(d[i]+' '+d[j]+'\n')

并检查file3 。