帮我指出这段代码的错误并修改它,如果代码没错请简化:for j in range(5): num = input("请输入密码(8~10位):") a,b,c,x = 0,0,0,0 for i in num: print(i) if i in {"a","b","c","d","e","f","g","h","i","j","k","l","m","n","o","p","q","r","s","t","u","v","w","x","y","z"}: a = 1 elif i in {"A","B","C","D","E","F","G","H","I","J","K","L","M","N","O","P","Q","R","S","T","U","V","W","X","Y","Z"}: b = 2 elif i in {"1","2","3","4","5","6","7","8","9","0"}: c = 3 else: x = 1 print(a,b,c,x) if a ==1 and b == 2 and c == 3: continue elif x == 1: print("密码要包含大写,小写和数字!!!") break if len(num) < 8: print("密码太短") elif len(num) > 10: print("密码太长") else: print("密码符合") break
时间: 2023-08-15 09:08:34 浏览: 52
这段代码没有明显的错误,但可以进行简化和优化。以下是修改后的代码:
```python
while True:
num = input("请输入密码(8~10位):")
if not (8 <= len(num) <= 10):
print("密码长度不符合要求!")
continue
a, b, c = False, False, False
for i in num:
if i.islower():
a = True
elif i.isupper():
b = True
elif i.isdigit():
c = True
if a and b and c:
print("密码符合要求!")
break
else:
print("密码要包含大写字母、小写字母和数字!")
```
这里使用了 while 循环,只有当密码符合要求时才会退出循环。同时使用了一个布尔类型的变量来判断密码是否包含了大写字母、小写字母和数字。这样做代码更简洁,也更易读。
相关问题
for i in range(10): for j in range(10): Q[i,j]=Q[j,i] #faire la transposition这段代码写的有问题吗
在这段代码中,变量Q没有被定义或初始化,可以在代码之前添加Q的定义和初始化。除此之外,代码中缩进也存在问题,应该将第二个for循环缩进到第一个for循环的下一行。另外,代码中的注释也有问题,应该将“faire la transposition”改为英文注释“transpose the matrix”。修正后的代码如下所示:
```
Q = [[0 for i in range(10)] for j in range(10)] # initialize Q
for i in range(10):
for j in range(10):
Q[i][j] = Q[j][i] # transpose the matrix
```
找出这段代码的错误for i in range(n+1): for j in range(m+1): if b[i][j]>maxx: maxx=b[i][j] row+=1 col+=1
这段代码的缩进存在问题,如果每个for循环下面有多行代码,则需要使用缩进来表示它们是循环的一部分。根据代码的缩进,我们可以猜测这段代码的目的是统计一个二维列表b中的最大值maxx以及它所在的行号和列号。但是由于缩进错误,row和col的自增操作会在每次maxx更新时都被执行,导致错误的结果。正确的代码应该是这样的:
```
maxx = float('-inf')
row = col = 0
for i in range(n+1):
for j in range(m+1):
if b[i][j] > maxx:
maxx = b[i][j]
row = i
col = j
```
在这个版本的代码中,每当我们找到新的最大值时,才会更新row和col的值,从而保证了它们只会记录最大值出现的位置。
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