Python 去除逗号和句号
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Stripping Commas and Periods
提问by Keyfer Mathewson
I am currently trying to input a text file, separate each word and organize them into a list.
我目前正在尝试输入一个文本文件，将每个单词分开并将它们组织成一个列表。
The current problem I'm having is getting rid of commas and periods from the text file.
我目前遇到的问题是从文本文件中删除逗号和句点。
My code is below:
我的代码如下：
#Process a '*.txt' file.
def Process():
name = input("What is the name of the file you would like to read from? ")
file = open( name , "r" )
text = [word for line in file for word in line.lower().split()]
word = word.replace(",", "")
word = word.replace(".", "")
print(text)
The output I'm currently getting is this:
我目前得到的输出是这样的：
['this', 'is', 'the', 'first', 'line', 'of', 'the', 'file.', 'this', 'is', 'the', 'second', 'line.']
As you can see, the words "file" and "line" have a period at the end of them.
如您所见，“file”和“line”这两个词的末尾有一个句点。
The text file I'm reading is:
我正在阅读的文本文件是：
This is the first line of the file.
This is the second line.
这是文件的第一行。
这是第二行。
Thanks in advance.
提前致谢。
回答by jamylak
These lines have no effect
这些线没有效果
word = word.replace(",", "")
word = word.replace(".", "")
just change your list comp to this:
只需将您的列表组合更改为：
[word.replace(",", "").replace(".", "")
for line in file for word in line.lower().split()]
回答by John La Rooy
Maybe stripis more appropriate than replace
也许strip比replace
def Process():
name = input("What is the name of the file you would like to read from? ")
file = open(name , "r")
text = [word.strip(",.") for line in file for word in line.lower().split()]
print(text)
>>> help(str.strip)
Help on method_descriptor:
strip(...)
S.strip([chars]) -> string or unicode
Return a copy of the string S with leading and trailing
whitespace removed.
If chars is given and not None, remove characters in chars instead.
If chars is unicode, S will be converted to unicode before stripping
回答by Tareq
Try this:
尝试这个：
chars = [',', '.']
word.translate(None, ''.join(chars))
For Python3
对于 Python3
chars = [',', '.']
word.translate({ord(k): None for k in chars})
