蟒蛇長字符串分割成不同的行

Question

123|china|jack|342|usa|Nick|324345|spin|Amy

我想這樣的最終結果（我知道我需要每3元素的新線）：

123,china,jack 
342,usa,Nick 
324345,spin,Amy 

謝謝

Answer 1

試一下：

x = '123|china|jack|342|usa|Nick|324345|spin|Amy' 

l = x.split('|') 
new_l = [l[i:i+3] for i in range(0,len(l),3)] 

這會給你：

>>> for i in new_l: 
...  print ','.join(i) 
... 
123,china,jack 
342,usa,Nick 
324345,spin,Amy 

更新：讀取文件

讀取該文件作爲字符串執行以下操作：

with open('your_file.txt', 'r') as myfile: 
    x=myfile.read().replace('\n', '|') 

Answer 2

它可以用一個print語句來完成

>>> d = '123|china|jack|342|usa|Nick|324345|spin|Amy' 
>>> l = d.split('|') 
>>> print(*list(map(lambda v: ','.join(v),[l[x: x+3] for x in range(0, len(l), 3)])), sep='\n') 
123,china,jack 
342,usa,Nick 
324345,spin,Amy 

所以現在一步一步

>>> d = '123|china|jack|342|usa|Nick|324345|spin|Amy' 
>>> l = d.split('|') # splitting input string into list of str objects that separated with '|' 
>>> l 
['123', 'china', 'jack', '342', 'usa', 'Nick', '324345', 'spin', 'Amy'] 
>>> [l[x: x+3] for x in range(0, len(l), 3)] # combining elements by 3 
[['123', 'china', 'jack'], ['342', 'usa', 'Nick'], ['324345', 'spin', 'Amy']] 
>>> list(map(lambda v: ','.join(v),[l[x: x+3] for x in range(0, len(l), 3)])) # merging every sublist to str with ',' as separator 
['123,china,jack', '342,usa,Nick', '324345,spin,Amy'] 
>>> print(*list(map(lambda v: ','.join(v),[l[x: x+3] for x in range(0, len(l), 3)])), sep='\n') # final print 
123,china,jack 
342,usa,Nick 
324345,spin,Amy