正则表达式提取字符串全部汉字

pattern = re.compile ('(.[\u4E00-\u9FA5_a-zA-Z]+)')
cas_part_names = pattern.findall(cas_part_names)
cas_part_names = ''.join (cas_part_names)[1:].replace (" (", ':').replace (");", ';').strip ()

print (cas_part_names)