Description
Exercise 62 - Considering two arrays with shape (1,3) and (3,1), how to compute their sum using an iterator?
Code
a = np.random.randint(0, 10, (1, 3))
b = np.random.randint(0, 10, (3, 1))
it = np.nditer([a,b,None])
for x,y,z in it:
z = x + y
print(it.operands[2])Unnecessary part
for x,y,z in it:
z = x + yAfter it = np.nditer([a,b,None]) it.operands[2] already has that value.
Exercise N80
Current code that gives error
r = [slice(start,stop) for start,stop in zip(R_start,R_stop)]
z = [slice(start,stop) for start,stop in zip(Z_start,Z_stop)]
R[r] = Z[z]Output
IndexError: only integers, slices (`:`), ellipsis (`...`), numpy.newaxis (`None`) and integer or boolean arrays are valid indices
Solution - Use tuples
r = tuple(slice(start,stop) for start,stop in zip(R_start,R_stop))
z = tuple(slice(start,stop) for start,stop in zip(Z_start,Z_stop))Metadata
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