indices question

[Lanny]

pretty self-explanatory, here's what I put in:

while stat == 0 :
pgrid#ignore, A pre-defined function
print "what cell do you want?"
varcc = raw_input
grid[varc] = 'O'

And here's what I get back:

Traceback (most recent call last):
File "C:\py_prog \Tic Tac Toe.py", line 27, in <module>
grid[varc] = 'O'
TypeError: list indices must be integers

Please don't tell me that "list indices must be integers" because I know
that, Why can't I put a varible thats an integer instead?



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[Christian Heimes]

Re: indices question

Lanny wrote:

Please don't tell me that "list indices must be integers" because I know
that, Why can't I put a varible thats an integer instead?

raw_input() always returns a string. You have to convert the string into
an integer using int().

Christian

[bearophileHUGS@lycos.com]

Re: indices question

Lanny:

...
varcc = raw_input
grid[varc] = 'O'
...
Why can't I put a varible thats an integer instead?

'varcc' and 'varc' are different names.

'raw_input' isn't a function call, you may want to turn that into a
function call.

varc isn't an integer, you may have to convert it to integer first,
using int(), because Python lists aren't like Lua ones, they are
represented with a sequence of cells, and an integer number is used to
denote what cells you want. Note that the cell must already exists
before accessing its contents.

Maybe you want to use an associative array instead, named 'dict' in
Python, that allows you freedom in the type of the keys and allows you
to create cells on the fly.

Surely my answer isn't enough to solve your problems, but it may give
you a starting point.

Bye,
bearophile

[Lanny]

Re: indices question

Lanny:

>...
> varcc = raw_input
> grid[varc] = 'O'
>...
>Why can't I put a varible thats an integer instead?

>
'varcc' and 'varc' are different names.
>
'raw_input' isn't a function call, you may want to turn that into a
function call.
>
varc isn't an integer, you may have to convert it to integer first,
using int(), because Python lists aren't like Lua ones, they are
represented with a sequence of cells, and an integer number is used to
denote what cells you want. Note that the cell must already exists
before accessing its contents.
>
Maybe you want to use an associative array instead, named 'dict' in
Python, that allows you freedom in the type of the keys and allows you
to create cells on the fly.
>
Surely my answer isn't enough to solve your problems, but it may give
you a starting point.
>
Bye,
bearophile

Thanks, this was very usefull



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