Reading a triangle of numbers into a 2d array of ints in Python
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by Gabriel Silk
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Published on 2010-04-26T07:21:41Z
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2010/04/26
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python
I want to read a triangle of integer values from a file into a 2D array of ints using Python. The numbers would look like this:
75 95 64 17 47 82 18 35 87 10 20 04 82 47 65 ...
The code I have so far is as follows:
f = open('problem18.input', 'r')
arr = []
for i in range(0, 15):
arr.append([])
str = f.readline()
a = str.split(' ')
for tok in a:
arr[i].append(int(tok[:2]))
print arr
I have a feeling this could be done in a tighter, more Pythonesque way. How would you do it?
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