One way to remember how slices work is to think of the indices as pointing between characters, with the left edge of the first character numbered 0. Then the ... ... <看更多>

Note that we can index a range using the colon ( : ) operator. A colon by itself means fetch everything. example[:] [1, True, None, [ ... ... <看更多>

In this lesson, you'll see how to access individual elements and sequences of objects within your lists. Lists elements can be accessed ... ... <看更多>

access by row-index 0, column-index-range 1-end, range-index 0, layer-index 1 # note how column-index-range returns an array # pick the first row # take a ... ... <看更多>

I want to do this as efficiently as possible. # Test array x = np.repeat(range(10),2).reshape([ ... ... <看更多>