Question

我是python的新用户。我有一个.txt格式的列表（和.csv），像这样

NEW YORK ....... from       
31 Chatty, Seager   Aarhaus     
Atlas, Jones    Abertham        
Polly, Manning Antwerpen        
Amazon, Brittle Belchental      
LONDON  ........ for        
31 Park  Dattemroed     
Eleanor, Mallett Civeta Naples      
3 Aurora Frigate    Ljubljana

我希望

NEW YORK .......  from 31 Chatty, Seager    Aarhaus     
NEW YORK .......  from Atlas, Jones Abertham        
NEW YORK .......  from Polly, Manning Antwerpen     
NEW YORK .......  from Amazon, Brittle  Belchental      
LONDON  ........ for 31 Park  Dattemroed        
LONDON  ........ for Eleanor, Mallett Civeta Naples     
LONDON  ........ for 3 Aurora Frigate   Ljubljana

我尝试使用正则表达式，但我无法得到结果。

我想知道是否有办法做到这一点。

Answer 1

这是一个打印所需输出的程序：

mysqladmin reload

结果：

with open('x.in') as input_file:
    for line in input_file:
        line = line.rstrip()
        if '....' in line:
            city = line
            continue
        print (city, line)

Answer 2

如果城市行总是NEW YORK ....... from 31 Chatty, Seager Aarhaus NEW YORK ....... from Atlas, Jones Abertham NEW YORK ....... from Polly, Manning Antwerpen NEW YORK ....... from Amazon, Brittle Belchental LONDON ........ for 31 Park Dattemroed LONDON ........ for Eleanor, Mallett Civeta Naples LONDON ........ for 3 Aurora Frigate Ljubljana，您可以使用groupby：

.....

哪会给你：

from itertools import groupby

with open(your_file) as f:
    grps = groupby(f, key=lambda line: "......." in line)
    for k,v in grps:
        if k:
            head = next(v).strip()
            print("\n".join(["{} {}".format(head, line.strip()) for line in next(grps)[1]]))

Answer 3

谢谢你！

实际上，我试图按照大写字母组织。通过改变Padraic Cunningham代码，我做了这个

for line in Text:
newline = re.sub('^([A-Z][A-Z]+[A-Z])', '\\1≈', line)

≈只是显示有一个大写字然后

的东西

grps = groupby(f_, key=lambda line: "≈" in line)
for k,v in grps:
    if k:
        head = next(v).strip()
        print('\n'.join(['{} {}'.format(head, line.strip()) for line in next(grps)[1]]))

Python - ＆gt;组织列表文本文件

3 个答案: