错误：“str”对象不支持项目分配python
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Error: 'str ' object does not support item assignment python
提问by user3510057
Error: 'str ' object does not support item assignment python
错误：“str”对象不支持项目分配python
dict=['A', 'a','B', 'b','C', 'c','D', 'd','E', 'e','F', 'f','G', 'g','H', 'h','I', 'i','J', 'j','K', 'k','L', 'l','M', 'm','N', 'n','P', 'o','P', 'p','Q', 'q','R', 'r','S', 's','T', 't','U', 'u','V', 'v','W', 'w','X', 'x','Y', 'y','Z' 'z']
def cript(s):
for i in range(0,len(s)):
a=dict.index(s[i])
if a<26:
s[i]=dict[a+26]
else:
s[i]=dict[a-26]
return s
print cript('Hello')
Error line 6
错误行 6
s[i]= dict[a+26]
TypeError: 'str' object does not support item assignment python
采纳答案by TheSoundDefense
Python does not allow you to swap out characters in a string for another one; strings are immutable. What you'll need to do is create a totally different string and return that instead.
Python 不允许您将一个字符串中的字符替换为另一个；字符串是不可变的。您需要做的是创建一个完全不同的字符串并返回它。
dict=['A', 'a','B', 'b','C', 'c','D', 'd','E', 'e','F', 'f','G', 'g','H', 'h','I', 'i','J', 'j','K', 'k','L', 'l','M', 'm','N', 'n','P', 'o','P', 'p','Q', 'q','R', 'r','S', 's','T', 't','U', 'u','V', 'v','W', 'w','X', 'x','Y', 'y','Z' 'z']
def cript(s):
crypt_s = ""
for i in range(0,len(s)):
a=dict.index(s[i])
if a<26:
crypt_s += dict[a+26]
else:
crypt_s += dict[a-26]
return crypt_s
print cript('Hello')
Of course, there may be other issues with the code, but that will solve that specific error message.
当然，代码可能还有其他问题，但这将解决该特定错误消息。
回答by Dannnno
Strings are immutable objects, meaning they can't be modified in place (you'd have to return a new string and reassign it).
字符串是不可变对象，这意味着它们不能就地修改（您必须返回一个新字符串并重新分配它）。
s[i] = dict[a + 26]
is trying to reassign a value in the string
正在尝试重新分配字符串中的值
Here is an easier to see example
这是一个更容易看到的例子
>>> astring = "Hello"
>>> astring[0] = "a"
Traceback (most recent call last):
File "<pyshell#1>", line 1, in <module>
astring[0] = "a"
TypeError: 'str' object does not support item assignment
回答by Omar Tahri
def game():
list = ["pomme", "anniversaire", "table", "travail", "amies", "enfants"]
ran = random.randint(0, (len(list)-1)/2)
mot = list[ran]
length = len(mot)
for x in range(0, length-1):
if length % 2 ==0:
a = int(random.randint(-length/2, length/2))
else:
a = int(random.randint(-(length-1)/2, (length-1)/2))
mot[x] = mot[x+a]
