中文文本处理的工具:
判断unicode是否是汉字，数字，英文，或者其他字符。全角符号转半角符号。
def is_chinese(uchar):
"""判断一个unicode是否是汉字"""
if uchar >= u'\u4e00' and uchar= u'\u0030' and uchar= u'\u0061' and uchar= u'\u0041' and uchar 0 and number > 0:
return True
else:
return False
def is_other(uchar, but = u''):
"""判断是否非汉字、数字和英文字符"""
if not (is_chinese(uchar) or is_number(uchar, but) or is_alphabet(uchar, but)):
return True
else:
return False
def is_other_all(ustring, but = u''):
"""判断是否非汉字、数字和英文字符串"""
for uchar in ustring:
if not is_other(uchar, but):
return False
return True
def exist_chinese(ustring):
for uchar in ustring:
if is_chinese(uchar):
return True
return False
def exist_number(ustring):
for uchar in ustring:
if is_number(uchar):
return True
return False
def exist_alphabet(ustring):
for uchar in ustring:
if is_alphabet(uchar):
return True
return False
def exist_other(ustring, but = u''):
for uchar in ustring:
if is_other(uchar, but):
return True
return False
def B2Q(uchar):
"""半角转全角"""
inside_code=ord(uchar)
if inside_code0x7e: #不是半角字符就返回原来的字符
return uchar
if inside_code==0x0020: #除了空格其他的全角半角的公式为:半角=全角-0xfee0
inside_code=0x3000
else:
inside_code+=0xfee0
return unichr(inside_code)
def Q2B(uchar):
"""全角转半角"""
if uchar == u'’':
return u'\''
inside_code=ord(uchar)
if inside_code==0x3000:
inside_code=0x0020
else:
inside_code-=0xfee0
if inside_code0x7e: #转完之后不是半角字符返回原来的字符
return uchar
return unichr(inside_code)
def stringQ2B(ustring):
"""把字符串全角转半角"""
return "".join([Q2B(uchar) for uchar in ustring])
def uniform(ustring):
"""格式化字符串，完成全角转半角，大写转小写的工作"""
return stringQ2B(ustring).lower()
def string2List(ustring):
"""将ustring按照中文，字母，数字分开"""
retList=[]
utmp=[]
for uchar in ustring:
if is_other(uchar):
if len(utmp)==0:
continue
else:
retList.append("".join(utmp))
utmp=[]
else:
utmp.append(uchar)
if len(utmp)!=0:
retList.append("".join(utmp))
return retList
