Python 删除标签符号并保留关键字

Question

我想删除标签符号 ('#') 和分隔单词的下划线 ('_')

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"

Answer 1

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

Answer 2

首先去除所有哈希标签，因为它们在开头，然后将所有下划线替换为空格；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)

Answer 3

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)])

Answer 4

假设只有#和_作为标点：

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'

Answer 5

您可以使用 re 模块：

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

Python 删除标签符号并保留关键字

Python remove hashtag symbol and keep key words

python

data-cleaning