IndexError：Python 中的列表赋值索引超出范围
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IndexError: list assignment index out of range in Python
提问by crax
I was solving a problem in python by using following code:
我正在使用以下代码解决 python 中的问题：
T = int(raw_input())
C=[]
for x in range(T):
C[x]=int(raw_input())
res=[]
for x in range(T):
res[x]=2**C[x]+2*C-1
for x in range(T):
print "%d\n",(res[x])
and this error came up:
出现了这个错误：
Traceback (most recent call last):
File "C:\Users\ACER\Documents\works\source code\python practice\Test1.py", line 4, in <module>
C[x]=int(raw_input())
IndexError: list assignment index out of range
Can any solve this error pls
任何可以解决这个错误请
采纳答案by Jason Hu
your list is empty. perl will expand array automatically but python won't.
你的清单是空的。perl 会自动扩展数组，但 python 不会。
C.append(int(raw_input()))
instead.
反而。
回答by NPE
You can't expand a Python list by assigning to an element past the end.
您不能通过分配给末尾的元素来扩展 Python 列表。
You need to expand the list explicitly but replacing
您需要显式扩展列表但替换
C[x]=int(raw_input())
with
和
C.append(int(raw_input()))
The same goes for res.
也是如此res。
Last but not least, the 2*Cin 2**C[x]+2*C-1will give you a list. It's unclear what you're trying to do here, but 2*Cisn't going to work. Did you mean 2*C[x]?
最后但并非最不重要的，2*Cin2**C[x]+2*C-1会给你一个列表。目前尚不清楚您要在这里做什么，但2*C不会奏效。你的意思是2*C[x]？
