python 判断字符串中是否含有汉字.doc

1. 判断字符串中是否含有汉字。def has_hz(text): hz_yes = False for ch in text: if isinstance(ch, unicode): if unicodedata.east_asian_width(ch)!= Na: hz_yes = True break else: continue return hz_yesdef has_hz(text): hz_yes = False for ch in text: if isinstance(ch, unicode): if unicodedata.east_asian_width(ch)!= Na: hz_yes = True break else: continue return hz_yes 单元测试： assert not has_hz() assert not has_hz( ) assert not has_hz(123) assert not has_hz(u123abc) assert has_hz(u123abc汉字) assert has_hz(u汉字) assert not has_hz() assert not has_hz( ) assert not has_hz(123) assert not has_hz(u123abc) assert has_hz(u123abc汉字) assert has_hz(u汉字)2. 隔指定长度插入一个换行符（/n），一个汉字算2个字符长def get_hz_string_width(text): 获取可能包含汉字的字符串的长度（1个汉字算2个字符长） s = 0 for ch in text: if isinstance(ch, unicode): if unicodedata.east_asian_width(ch)!= Na: s += 2 else: s += 1 else: s += 1 return sdef get_hz_sub_string(text,startat,sub_len=None): 获取可能包含汉字的字符串的子串（计算长度时，1个汉字算2个字符长） 用法： get_hz_sub_string(record,0,44) #取子串，位置为0至43 get_hz_sub_string(record,44) #取子串，位置为44至末尾 s = pos = 0 for ch in text: if pos = startat: s.append(ch) if isinstance(ch, unicode): if unicodedata.east_asian_width(ch)!= Na: pos += 2 else: pos += 1 else: pos += 1 if sub_len!=None and get_hz_string_width(.join(s)=sub_len: break return .join(s)def insert_line_feed(my_str,interval,line_feed=n): 隔指定长度插入一个n符号(一个汉字处理为2个字符长度） if len(my_str)=0: return n = int(get_hz_string_width(my_str)-1)/interval)+1 str_list = k = 1 pos_start = 0 while k = startat: s.append(ch) if isinstance(ch, unicode): if unicodedata.east_asian_width(ch)!= Na: pos += 2 else: pos += 1 else: pos += 1 if sub_len!=None and get_hz_string_width(.join(s)=sub_len: break return .join(s)def insert_line_feed(my_str,interval,line_feed=/n): 隔指定长度插入一个/n符号(一个汉字处理为2个字符长度） if len(my_str)=0: return n = int(get_hz_string_width(my_str)-1)/interval)+1 str_list = k = 1 pos_start = 0 while k 0: line_str = str_listi if len(line_str.strip()=0: text_to_line = i i -= 1 else: break new_str_list = i = 0 for obj in str_list: if do_trim and i = text_to_line: break new_str_list += split(insert_line_feed(obj,line_length),n) i += 1 #不加 u 就出错“unicode object is not callable”！？ return u+n.join(new_str_list) def wrap_text_block(text,line_length,do_trim=True): if do_trim: str_list = split(text.rstrip(),/n) else: str_list = split(text,/n) #检测末尾空行的开始位置 text_to_line = -1 if do_trim: i = len(str_list)-1 while i 0: line_str = str_listi if len(line_str.strip()=0: text_to_line = i i -= 1 else: break new_str_list = i = 0 for obj in str_list: if do_trim and i = text_to_line: break new_str_list += split(insert_line_feed(obj,line_length),/n) i += 1 #不加 u 就出错“unicode object is not callable”！？ return u+/n.join(new_str_list) 单元测试： assert wrap_text_block(,1)= assert wrap_text_block(,1,do_trim=False)= assert wrap_text_block(u文字1234,2)=u文n字n12n34 assert wrap_text_block(u文字12345 ,2)=u文n字n12n34n5 assert wrap_text_block(u文字1n234,2)=u文n字n1n23n4 assert wrap_text_block(u文字1n2345 ,2)=u文n字n1n23n45 assert wrap_text_block(,1)= assert wrap_text_block(,1,do_trim=False)= assert wrap_text_block(u文字1234,2)=u文/n字/n12/n3