Python删除#标签符号并保留关键字

时间:2018-02-08 08:45:18

标签: python data-cleaning

我想删除主题标记符号'#')并强调单词之间的分隔('_'

示例:"this tweet is example #key1_key2_key3"

我想要的结果:"this tweet is example key1 key2 key3"

我的代码使用字符串:

#Remove punctuation , # Hashtag Symbol 
translate_table = dict((ord(char), None) for char in string.punctuation)   
cleaned_combined_tweets.translate(translate_table)

给出结果:"this tweet is example key1key2key3"

5 个答案:

答案 0 :(得分:3)

>>> "this tweet is example #key1_key2_key3".replace("#", "").replace("_", " ")

答案 1 :(得分:0)

您可以使用re模块:

import re

a = 'this tweet is example #key1_key2_key3 sdasd #key1_key2_key3'

def get_all_hashtags(text):
    hash_pattern = re.compile('\#[\w\_]+',re.IGNORECASE)
    return re.findall(hash_pattern,text)

def clean_hashtags(hashtag, return_list=False):
    # return_list just in case you want a list
    if return_list:
        return re.split('\_',hashtag.replace('#',''))
    else:
        return ' '.join(re.split('[\_]+',hashtag.replace('#','')))

print([clean_hashtags(h,True) for h in get_all_hashtags(a)])
print([clean_hashtags(h) for h in get_all_hashtags(a)])

答案 2 :(得分:0)

假设只有#和_作为标点符号:

import re

tweet = "this tweet is example #key1_key2_key3"
new_tweet = " ".join(word.strip() for word in re.split('#|_', tweet))
print (new_tweet)

Out: 'this tweet is example key1 key2 key3'

答案 3 :(得分:0)

您可以使用re模块:

a = re.sub('([#])|([^a-zA-Z])',' ',a )

答案 4 :(得分:-1)

首先剥离所有哈希标记,因为它们在开头,然后用空格替换所有下划线;简单易行的解决方案。

修改后的代码:

string = "This tweet is example #key1_key2_key3"
string = string.strip("#")
string = string.replace("_"," ")
print(string)