Python->組織列表文本文件

Question

我是python的新用戶。 我有一個.txt格式（和.csv）的列表，像這樣

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

我想要

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

我嘗試使用正則表達式，但無法獲得結果。

我想知道是否有辦法做到這一點。

Answer 1

這是一個打印所需輸出的程序：

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

結果：

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

Answer 2

如果城市線總是有.....您可以使用groupby：

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]]))

這會給你：

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

Answer 3

謝謝！

實際上，我試圖根據大寫單詞進行組織。 通過更改Padraic Cunningham代碼，我做到了

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

≈只是顯示一個大寫單詞，然后

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]]))