Hello,
I used python list comprehension to create a grid (list of lists) of
Objects (instances of MyItem class). Can anyone make recommendations to
achieve a simple access to the elements. My attempt at array access
(like this: array[1,2] ) does not work. What am I overlooking? Thanks in
advance! :)
If anyone has time to show a better way to achieve same, then I am
interested to learn! :)
###
from pprint import *
class MyItem:
def __init__(self, value):
self.data=value
def __repr__(self):
return 'MyItem(%s)' % (self.data)
class Grid:
def __init__(self, x, y, value):
self.data = [[MyItem(float(value))
for i in range(x)] for j in range(y)]
if __name__ == "__main__":
grid = Grid(2, 3, 0.42)
pprint(grid)
pprint(grid.data)
# next line fails to access array element
pprint (grid.data[1,2])
# EOF #
OUTPUT:
<__main__.Grid instance at 0x7beb8>
[[MyItem(0.42), MyItem(0.42)],
[MyItem(0.42), MyItem(0.42)],
[MyItem(0.42), MyItem(0.42)]]
Traceback (most recent call last):
File "multidim04.py", line 20, in <module>
pprint (grid.data[1,2])
TypeError: list indices must be integers
Cheers,
Art
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