def update_biaoqian(tag_list, title):
if tag_list == [''] or tag_list == []:
print('没有标签，取标题作为标签')
titless = re.sub('\s', ',', title)
tag_list = title.replace('、', ',').replace('；', ',').replace('，', ',').replace('。', ',').replace(' ', ',').replace('？', ',').replace('|', ',').replace('/', ',')
# 把相邻的逗号简化成一个
tags = re.sub(r"(,)\1+", r"\1", tag_list)
# 开头是逗号，从第二个开始取值
if tags[0] == ',' and tags[-1] != ',':
tags = tags[1:]
# 结尾时句号，从倒数第二位取值
elif tags[0] != ',' and tags[-1] == ',':
tags = tags[:-1]
elif tags[0] == ',' and tags[-1] == ',':
tags = tags[1:-1]
elif tags[0] != ',' and tags[-1] != ',':
tags = tags
# 以逗号作为分隔符，取二个
tags_list = tags.split(',')[-2:]
tag = ''
for tags in tags_list:
tag += tags + ','
tag = tag[:-1]
else:
tag_list = ''.join(tag_list)
# 把空格，顿号，逗号，句号,问号，分好转换成英文逗号
tag_list = tag_list.replace('、', ',').replace('；', ',').replace('，', ',').replace('。', ',').replace(' ', ',').replace('？', ',').replace('|', ',')
# 把相邻的逗号简化成一个
tags = re.sub(r"(,)\1+", r"\1", tag_list)
# 开头是逗号，从第二个开始取值
if tags[0] == ',' and tags[-1] != ',':
tags = tags[1:]
# 结尾时句号，从倒数第二位取值
elif tags[0] != ',' and tags[-1] == ',':
tags = tags[:-1]
elif tags[0] == ',' and tags[-1] == ',':
tags = tags[1:-1]
elif tags[0] != ',' and tags[-1] != ',':
tags = tags
# 以逗号作为分隔符，取二个
tags_list = tags.split(',')[-2:]
tag = ''
for tags in tags_list:
tag += tags + ','
tag = tag[:-1]
return tag
标签：elif,tags,标签,最后,replace,逗号,list,tag From： https://www.cnblogs.com/wolvies/p/17828448.html