If for some reason you need to define an empty array, but with fixed width (e.g. np.concatenate() ), you can use: np.empty((0, some_width)) . 0, so your first ... ... <看更多>

np.emptyLets start ipython and import numpy as np. np. empty is a good way to initialize arrays. so lets make an array called initial. ... <看更多>

Both are empty, still the minimum will be either an empty array or a ... min(np.array(data, int16)).dtype == np.int16 must be true even when ... ... <看更多>

From the documentation: empty, unlike zeros, does not set the array values to zero, and may therefore be marginally faster. ... <看更多>

This section demonstrates the use of NumPy's structured arrays and record arrays, ... Now that we've created an empty container array, we can fill the array ... ... <看更多>