刪除標點符號

Question

我需要配合標點符號功能才能打印文件中的文本而不用標點符號。以一個線："How are you today?"

到目前爲止，打印：

"how 
are 
you 
today?" 

但我想打印出來，如：

how 
are 
you 
today 

我的代碼如下所示：

from scanner import * 
import sys 
import string 

def processFile(filename): 
    s = Scanner(filename) 
    token = s.readtoken() 
    array = [] 
    while token != "": 
     newToken = "" 
     for i in range(0,len(token),1): 
      newchar = RawChar(token[i]) 
      newToken = newToken + newchar 
     array.append(newToken) 
     token = s.readtoken() 
    s.close() 
    return array 

def eachLine(tokens): 
    for i in range(0,len(tokens),1): 
     pun(tokens[i]) 
     print(tokens[i]) 
    return 

def pun(string): 
    punctuation = ["`","~","!","@","#","$","%","^","&","*","(",")","_","-","+","=","{","[","}","]","|",":",";","\"","'","<",",",">",".","?","/"] 
    for i in string: 
     newString = "" 
     if i not in string: 
      newString = newString + i 
    return newString 

def RawChar(char): 
    if char == "A": 
     char = "a" 
    elif char == "B": 
     char = "b" 
    elif char == "C": 
     char = "c" 
    elif char == "D": 
     char = "d" 
    elif char == "E": 
     char = "e" 
    elif char == "F": 
     char = "f" 
    elif char == "G": 
     char = "g" 
    elif char == "H": 
     char = "h" 
    elif char == "I": 
     char = "i" 
    elif char == "J": 
     char = "j" 
    elif char == "K": 
     char = "k" 
    elif char == "L": 
     char = "l" 
    elif char == "M": 
     char = "m" 
    elif char == "N": 
     char = "n" 
    elif char == "O": 
     char = "o" 
    elif char == "P": 
     char = "p" 
    elif char == "Q": 
     char = "q" 
    elif char == "R": 
     char = "r" 
    elif char == "S": 
     char = "s" 
    elif char == "T": 
     char = "t" 
    elif char == "U": 
     char = "u" 
    elif char == "V": 
     char = "v" 
    elif char == "W": 
     char = "w" 
    elif char == "X": 
     char = "x" 
    elif char == "Y": 
     char = "y" 
    elif char == "Z": 
     char = "z" 
    return char 

def main(): 
    newForm = processFile(sys.argv[1]) 
    eachLine(newForm) 

main() 

任何建議作爲在哪裏把def pun(string)？

Answer 1

從字符串刪除標點符號，使用str.translate：

In [124]: import string 

In [126]: string.punctuation 
Out[126]: '!"#$%&\'()*+,-./:;<=>?@[\\]^_`{|}~' 

In [127]: '"How are you today?"'.translate(None, string.punctuation) 
Out[127]: 'How are you today' 

Answer 2

可以顯着改善標點符號使用this stackoverflow article顯示技術剝離。然後使用s.lower（）來小寫字符串s。

Answer 3

import string 
s = '"Right now!" she shouted, and hands fluttered in the air - amid a few cheers - for about two minutes.' 
x = "".join([c for c in s if or c not in string.punctuation])