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如何创建一个函数来删除Python中用于功能工程的特殊字符?

pandas python

-1

manosubron · 技术社区 · 5 年前

我想创建一个函数,从pandas数据帧中删除特殊字符,同时传递一个参数来保留所需的字符。

def strip_characters(c, req_char = ''):
    spec_chars = ["!",'"',"#","%","&","'","(",")","*","+",",","-",".","/",":",";","<","=",">","?","@","[","\\","]","^","_","`","{","|","}","~","â"]

    new_spec = spec_chars.remove(req_char)
    for char in spec_chars:
        c = c.str.replace(char, ' ')
    return c


df['col'] = df['col'].apply(strip_characters,',')  # passing a comma to retain the character

# df['col'] = ['Dining Room', 'Pre-War', 'Laundry in Building', '&Lobby']

1 回复 | 直到 5 年前

sushanth 5 年前

试试这个,

import pandas as pd

df = pd.DataFrame({'col':['Dining Room', 'Pre-War', 'Laundry in Building', '&Lobby']})

# ([^) means match anything but word character
# "[^\w+|,]" to exclude specific character's from being replaced

df['col'].str.replace("[^\w+]"," ")

Ouput

0            Dining Room
1                Pre War
2    Laundry in Building
3                  Lobby

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