我编写了一个示例程序来根据输入生成哈希码(尚未完成,因此您看不到它实际生成哈希的部分):
import hashlib
def isInputValid(input, validInput=[]):
for i in validInput:
if validInput[i] == input: # error generated here
return True
pass
i = i + 1
return False
pass
sha1hash = hashlib.sha1()
choiceValidInputs = ["1", "2"]
print ("Welcome to hash generator!\n")
print ("[1] -- generate hash from input")
print ("[2] -- quit")
choice = input("\nWhat do you want to do? ")
if not isInputValid(choice, choiceValidInputs):
print ("Invalid option; try again")
choice = input("What do you want to do? ")
if choice == "1":
print ("\n[1] SHA1/SHA256")
print ("[2] SHA512")
hashType = input("\nWhat hash type do you want? ")
...
elif choice == "2":
print ("Goodbye!")
quit()
我的终端窗口:
kali@kali:~$ python3 /home/bin/hashgenerator.py
Welcome to hash generator!
[1] -- generate hash from input
[2] -- quit
What do you want to do? 1
Traceback (most recent call last):
File "/home/bin/hashgenerator.py", line 19, in <module>
if isInputValid(choice, choiceInput)==False:
File "/home/bin/hashgenerator.py", line 5, in isInputValid
if validInput[i] == input:
TypeError: list indices must be integers or slices, not str
kali@kali:~$
我想检查输入内容是否在choiceValidInputs
中。我实际上并不真正知道如何在Python中使用列表等。
感谢您的帮助
答案 0 :(得分:3)
您正在遍历元素而不是索引
如果要使用索引:
def isInputValid(input, validInput=[]):
for i in range(len(validInput)):
if validInput[i] == input: # error generated here
return True
如果您想使用元素,可以做到
def isInputValid(input, validInput=[]):
for i in validInput:
if i == input: # error generated here
return True
但是您可以更轻松地做到这一点。而且更正确:)
def isInputValid(input, validInput=[]):
return input in validInput
答案 1 :(得分:1)
for i in validInput:
if validInput[i] == input:
i
在validInput
中不是项目的索引,它是项目本身。您想做的是:
for i in validInput:
if i == input:
此外,您不需要下面的pass
和i = i+1
。而且我建议将变量input
重命名为其他名称,以避免与input()
函数混淆。