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Alex Rivera
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When I create a one dimensional array in numpy and use a string (containing digits) to index it, I get an error as expected: >>> import numpy as np >>> a = np.arange(15) >>> a['10'] Traceback (most recent call last): File "<stdin>", line 1, in <module> ValueError: field named 10 not found. However, when I create a two dimensional array and use two strings for indexing, it gives no error and returns the element as if the strings are converted to integers first >>> b = np.arange(15).reshape(3,5) >>> b array([[ 0, 1, 2, 3, 4], [ 5, 6, 7, 8, 9], [10, 11, 12, 13, 14]]) >>> b[1, 2] 7 >>> b['1', '2'] 7 What's going on? Why don't I get an error in the two dimensional case?
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