# 判断密码强度小程序

### 判断密码强度小程序

```
import random

numbers = {'0','1','2','3','4','5','6','7','8','9'}
return set(password_str) & numbers

letters = set('abcdefghijklmnopqrstuvwxyz')
return letters & set(password_str.lower())

def makenumberstr():
"""随机产生一个3到10位的数字字符串"""
n = '0123456789'
return "".join( [random.choice(n) for _ in range(random.randint(3,10))])

def makalphastr():
"""随机产生一个3到10位的字母字符串"""
s = 'abcdefghijklmnopqrstuvwxyz'
return "".join( [random.choice(s) for _ in range(random.randint(3,10))])

def makerandomstr():
"""随机产生一个3到10位的包含数字和字母的字符串"""
s = '0123456789abcdefghijklmnopqrstuvwxyz'
return "".join( [random.choice(s) for _ in range(random.randint(3,10))])

def makepass(level):
"""根据密码强度产生密码"""
if level == 1:
p = makerandomstr()
while len(p)>=8:p = makerandomstr()
elif level == 2:               # 如果强度是2，则产生大于或等于8位的仅是数字或字母的密码
if random.randint(0,1)==0: # 如果是0，产生大于或等于8位的数字密码
p = makenumberstr()
while len(p)<8:p = makenumberstr()
else:
p = makalphastr()
while len(p)<8:p = makalphastr()
elif level == 3:               # 如果强度是3，则产生大于8位的包含数字和字母的密码
p = makerandomstr()
while len(p)<8 or not have_number(p) or not have_letter(p):
p = makerandomstr()

return p

for _ in range(10):
level = random.randint(1,3)
print(level,makepass(level))

```