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utils.py
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123 lines (108 loc) · 2.81 KB
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#!/usr/bin/env python
# -*- coding:utf-8 -*-
# author: chenhe<hee0624@163.com>
# time: 2017-11-30
# version: 1.0
from collections import Counter
import jieba.posseg as pseg
import re
def is_chinese(uchar):
"""判断一个unicode是否是汉字"""
if uchar >= '\u4e00' and uchar <= '\u9fa5':
return True
else:
return False
def is_number(uchar):
"""判断一个unicode是否是数字"""
if uchar >= u'\u0030' and uchar <= u'\u0039':
return True
else:
return False
def is_alphabet(uchar):
"""判断一个unicode是否是英文字母"""
if (uchar >= u'\u0041' and uchar <= u'\u005a') or (uchar >= u'\u0061' and uchar <= u'\u007a'):
return True
else:
return False
def is_legal(uchar):
"""判断是否非汉字，数字和英文字符"""
if not (is_chinese(uchar) or is_number(uchar) or is_alphabet(uchar)):
return False
else:
return True
def count_pos(str):
"""返回词性个数"""
pos_set = set()
words = pseg.cut(str)
for word, flag in words:
pos_set.add(flag)
return len(pos_set)
def is_longsent(str):
"""根据字符串汉字长度判断是否是标题"""
length = 0
for uchar in str:
if is_chinese(uchar):
length += 1
else:
pass
if length > 8:
return True
else:
return False
def clear_title(title_str):
seg_set = set(['\\', '\|', '/', '_'])
c = Counter()
for item in title_str:
if item in seg_set:
c[item] += 1
if c.most_common(1):
seg, count = c.most_common(1)[0]
else:
seg, count = '', 0
if seg:
title = title_str.split(seg)[0]
else:
title = title_str
title = title.replace('——', '-')
tmp = title.split('-')
is_continue = True
while is_continue:
if len(tmp) > 1:
top = tmp[-1]
pos_num = count_pos(top)
if pos_num > 2:
is_continue = False
else:
tmp.pop()
else:
is_continue = False
title = '-'.join(tmp).replace("\t", '')
return title
def clear_pan(str):
num = str.count('>')
if num >= 2:
return str.split('>')[-1]
else:
return str
def drop_null(arg):
if isinstance(arg, str):
arg = re.sub('\s', '', arg, flags=re.S)
return arg
elif isinstance(arg, list):
new_list = []
for i in arg:
i = i.strip()
if i:
new_list.append(i)
else:
continue
return new_list
else:
return arg
def drop_mutil_br(str):
str = re.sub(r'<br>|</br>', '\n', str)
str = re.sub(r'\n\s+', '\n', str)
return str
def drop_mutil_blank(str):
str = re.sub(r'\s{2,}', ' ', str)
return str