如何在python中将多个列表组合成字符串

Question

我有一个包含多个列表的列表，我想将这些列表合并为单个字符串，以便可以在其上使用counter（）方法。

样品清单 清单1 = [ “这是第一个文件”， “本文件是第二份文件”， “这是第三个”， “这是第一个文档”，

需要输出“这是第一个文件，这个文件是第二个文件，这是第三个文件，这是第一个文件”

谢谢。

Answer 1

使用.join（）方法：

list1= ['this is the first document', 'this document is the second document', 'and this is the third one', 'is this the first document']

list1_joined = ",".join(list1)
print(list1_joined)

#Output:
'this is the first document,this document is the second document,and this is the third one,is this the first document'

Answer 2

您可以使用内置的join()功能：

list = [ 'this is the first document', 'this document is the second document', 'and this is the third one', 'is this the first document']
print(', '.join(list))

输出：

this is the first document this document is the second document and this is the third one is this the first document

Answer 3

创建一个计数器对象，并使用object_name.element（）遍历并打印。

  c = Counter(List1) 
  for i in c.elements(): 
       print ( i, end = " ")

有关详细信息，[https://www.geeksforgeeks.org/python-counter-objects-elements/][1]