Question

注意：在文件中，“\ n”用于新行，其长度为1，“\\ n”用于字符串“\ n”，其长度为2。

当我在Line="Some thing\n"之后给出Line.split()时，它会给出单词列表[“Some”，“thing”]并跳过\n它不会给thing\n。我没有使用它默认执行的strip()函数。普通的strip（）函数用于从行尾跳过\n。

check.txt：

abc abc abc \\n abc abc abc abc abc abc abc abc abc abc abc abc abc

abc abc abc

我的代码是：

fileread=open("check.txt","r")
for line in fileread:
     print("Line:",line , "lenght :",len(line))
     words=line.split()                  #It Skip NewLine by Default
     print("Words List in Line:",words)

输出：

Line: abc abc abc \\n abc abc abc abc abc abc abc abc abc abc abc abc abc
 lenght : 68
Words List in Line: ['abc', 'abc', 'abc', '\\\\n', 'abc', 'abc', 'abc', 'abc', 'abc', 'abc', 'abc', 'abc', 'abc', 'abc', 'abc', 'abc', 'abc']
Line:
 lenght : 1
Words List in Line: []
Line: abc abc abc
 lenght : 12
Words List in Line: ['abc', 'abc', 'abc']

我的问题是，可以拆分功能默认情况下可以从Line中删除特殊字符吗？为什么行：“\ n”不创建列表[“\ n”]并创建空列表[]

Answer 1

Split（）函数默认情况下拆分所有这些字符。Link

中的描述

Representation  Description
\n             Line Feed
\r             Carriage Return
\r\n           Carriage Return + Line Feed
\v or \x0b     Line Tabulation
\f or \x0c     Form Feed
\x1c           File Separator
\x1d           Group Separator
\x1e           Record Separator
\x85           Next Line (C1 Control Code)
\u2028         Line Separator
\u2029         Paragraph Separator

Python代码

>>> data= "dsddddd\ndasdasd\ndasdasdas\nasfsafs\n"
>>> print(data.split())
['dsddddd', 'dasdasd', 'dasdasdas', 'asfsafs']
>>> data="aaaaaaaaaaa aaaaaaaaaaaa aaaaaaaaaa"
>>> print(data.split())
['aaaaaaaaaaa', 'aaaaaaaaaaaa', 'aaaaaaaaaa']
>>> data= "dsddddd\rdasdasd\rdasdasdas\rasfsafs\r"
>>> print(data.split())
['dsddddd', 'dasdasd', 'dasdasdas', 'asfsafs']
>>> data= "dsddddd\u2029dasdasd\u2029dasdasdas\u2029asfsafs\u2029"
>>> print(data.split())
['dsddddd', 'dasdasd', 'dasdasdas', 'asfsafs']
>>>

Split（）跳过python

1 个答案: