python随机生成测试数据用户名

import random

#对应从'0'到'9'的ASCII码 48~57
#对应从'A'到'Z'的ASCII码 65~90
#对应从'a'到'z'的ASCII码 97~122


def get_aZ():
        num=random.randint(65,122)
        if num<91 or num>96:
                return chr(num)                
        else:
                return get_aZ()


#方法一
list_1=[]
for i in range(0,5):
        a=get_aZ()
        b=str(random.randint(0,9))
        list_1.append(a)
        list_1.append(b)
    
random.shuffle(list_1)
print ''.join(list_1)

#结果 3p44im3M8i


#方法二
str='0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ'
max=len(str)+1

list_2=[]
for i in range(10):
        pos=random.randint(0,max)
        list_2.append(str[pos-1:pos])
        
print ''.join(list_2)

#结果 VKrhmry1bJ