如何在字典中给变量加一个数字？

Question

我已经把这个代码放进了一个更大的代码块中，但是我把它缩小到了这个错误。我知道错误是我试图在字典中添加变量。有没有办法我可以把它加到实际的数据里？你知道吗

smallGuns = 5
bigGuns = 2
unarmed = 3
meleeWeapons = 20
throwing = 4
firstAid = 2
sneak = 5
lockpick = 10
steal = 3
science = 4
repair = 3
speech = 5

choice = raw_input("Which stat do you want to add points to?")
skillPoints = 5

statlist = ['small guns', 'big guns', 'unarmed', 'melee weapons', 'throwing', 'first aid' 'sneak', 'lockpick', 'steal', 'science', 'repair', 'speech']

if choice in statlist:
pointDeduction = input("How many points do you wish to add to %s? (Up to %s points)" %(choice, skillPoints))
if pointDeduction <= choice:
        choice += pointDeduction
        skillPoints -= pointDeduction
else:
        print "You do not have that many points to distribute to %s." %(choice)

print steal

我的错误消息是

Traceback (most recent call last): File "F:/TARG/temp.py", line 22, in <module> choice += pointDeduction TypeError: cannot concatenate 'str' and 'int' objects

Answer 1

我从您的代码中猜测statlist是一个包含stat键和stat value值的字典。现在你有了一个列表，所以本质上你说的是“如果这个项目在列表中，请在它的末尾加上一个数字”（尽管不正确）。你知道吗

你要做的是给问题加上词典。第一部分，声明变量，并不完全必要，您可以这样完成：

statlist = {'small guns' : 5, 'big guns' : 2, ...}

对于每个值。然后，要更改统计信息：

if choice in statlist:
    pointDeduction = input("How many points do you wish to add to %s? (Up to %s points)" %(choice, skillPoints))
    if pointDeduction <= statlist[choice]:
        statlist[choice] += pointDeduction
        skillPoints -= pointDeduction
else:
    print "You do not have that many points to distribute to %s." %(choice)