what does int means for python ?

[alefajnie]

#!/usr/bin/env python

arr = [[0 for c in range(0, 10)] for r in range(0, 10)] #
10x10 array

arr[2,3] # throws TypeError: list indices must be
integers
arr[int(2), int(3)] # also throws TypeError: list indices must be
integers !

 

[Irmen de Jong]

#!/usr/bin/env python

arr = [[0 for c in range(0, 10)] for r in range(0, 10)] #
10x10 array

arr[2,3] # throws TypeError: list indices must be
integers
arr[int(2), int(3)] # also throws TypeError: list indices must be
integers !

try arr[2][3] instead.

basically your version is trying to index an array with a tuple argument (2,3).

--irmen

 

[alefajnie]

try arr[2][3] instead.

basically your version is trying to index an array with a tuple argument (2,3).

--irmen

oh, you're right.

btw, is any simple way to create multi-dimension array ?
any built-in function ?

 

[mimi.vx]

try arr[2][3] instead.

basically your version is trying to index an array with a tuple argument (2,3).

--irmen

oh, you're right.

btw, is any simple way to create multi-dimension array ?
any built-in function ?

test numpy from scipy package
on www.scipy.org

 

[castironpi]

try arr[2][3] instead.

basically your version is trying to index an array with a tuple argument (2,3).

--irmen

oh, you're right.

btw, is any simple way to create multi-dimension array ?
any built-in function ?

it is not clear that two-dim arrays are faster than hashes in all
implementations of Python, or in every general language, or if they're
the right symbol for your program.

a= { }
a[ 0, 1 ]= True
a[ 4, 0 ]= True
a[ 0, 1 ]

True

however, this one:

a[ 2, 1 ]

results in a KeyError. do you want a particular thing, or are you on
the clock?

if you want to define 'blanks', that takes time too. is it initally
empty?