为python 3分配while循环中的列表

Question

I've got the following bit of python code:

# we are going to define a list:

charList = []

#which we can use to add character's data to

i = 0

print("Please input data for your first character below: ")

while i <= 5:
    charList[i] = input("What is their name? ")
    i += 1 # increments i by 1
    charList[i] = input("\nAnd what is their strength value? ")
    i += 1
    charList[i] = input("\nAnd what is their skill value? ")
    i += 1
    print("\nThank You :)\n")
    print("Now for your second character:")

print(charList[0],charList[3])

This is for version 3.4.0.

It comes up with the following error:

>>> 
Please input data for your first character below: 
What is their name? Chewbacca
Traceback (most recent call last):
  File "C:/Users/Peter/Documents/ARCHIVES/NEW!/Computing/task3version1.0.py", line 20, in <module>
    charList[i] = input("What is their name? ")
IndexError: list assignment index out of range
>>> 

I am guessing it is to do with an issue of i's value being changed while in the while loop. Any ideas as to what is wrong? Thank you :)

Answer 1

Accessing indices of a list, like in charList[i] , is there to access/manipulate existing elements of the list. Since charList starts out empty there are no elements that could be accessed. Trying to do so will give you an out of range error, as you have seen.

Instead you seem to want to append to the list, like this:

charList.append(input("What is their name? "))

Answer 2

Why are you trying to do it in a cycle? You're trying to rewriting same list 5 times.

questions = ("What is their name? ", "\nAnd what is their strength value? ", "\nAnd what is their skill value? ")
print("Please input data for your first character below: ")
charlist = [input(i) for i in questions]
print("\nThank You :)\n")
print(charList[0],charList[3])

If you want several characters:

charlist = []
questions = ("What is their name? ", "\nAnd what is their strength value? ", "\nAnd what is their skill value? ")
print("Please input data for your first character below: ")
for i in range(5):
    character = [input(i) for i in questions]
    charlist.append(character)
    print("\nThank You :)\n")
print(charList[0][0],charList[3][0])