#习题2：定义一个类：实现功能可以返回随机的10个数字，随机的10个字母， #随机的10个字母和数字的组合；字母和数字的范围可以指定class RandomString():#随机数选择的范围作为参数，如（1~100）字母 （'A'~'z'）,大写字母在前 按ascii值排列先后def __init__(self,start_num=0,end_num=100,start_alpha='A',end_alpha='z'):import stringif not isinstance(start_num,int) or not isinstance(end_num,int) or \not isinstance(start_alpha,str) or not isinstance(end_alpha,str) or \(start_alpha not in string.ascii_letters or end_alpha not in string.ascii_letters):print('参数类型错误，请重新输入！')return Noneself.start_num=start_numself.end_num=end_numself.start_alpha=start_alphaself.end_alpha=end_alpha#生成要求数量随机数字,num 随机数的数量def random_digits(self,num):print('self.start_num,self.end_num:',self.start_num,self.end_num)if not isinstance(num,int):print('数字类型输入错误，请重新输入')return Nonefrom random import randintnum_list=[]for i in range(num):num_list.append(randint(self.start_num,self.end_num))return num_list#生成要求数量随机字母，大小写混合def random_letters(self,num):if not isinstance(num,int):print('数字类型输入错误，请重新输入')return Nonefrom random import randintimport stringall_letters=string.ascii_uppercase+string.ascii_lowercasestart_position=all_letters.find(self.start_alpha)end_position=all_letters.find(self.end_alpha)if start_position>end_position:start_position,end_position=end_position,start_positionletters_list=[]for i in range(num):letters_list.append(string.ascii_letters[randint(start_position,end_position)])return letters_listdef random_digits_letters(self,num):digits_string=list(range(self.start_num,self.end_num+1))print('digits_string',digits_string)import stringall_letters=string.ascii_uppercase+string.ascii_lowercaseprint('all_letters',all_letters)print('self.start_alpha',self.start_alpha)print('self.end_alpha',self.end_alpha)start_position=all_letters.find(self.start_alpha)end_position=all_letters.find(self.end_alpha)letters_string=list(all_letters[start_position:end_position+1])print('letters_string',letters_string)from random import choiceall_string=digits_string+letters_stringprint('all_string',all_string)all_list=[]for i in range(num):all_list.append(choice(all_string))return all_listrandomdigitalpha=RandomString(2,100,'W','e') # print(randomdigitalpha.start_num) print(randomdigitalpha.random_digits(10))print(randomdigitalpha.random_letters(5))print(randomdigitalpha.random_digits_letters(15))
,time()函数的应用)
