100 numpy exercises A joint effort of the numpy community The goal is both to offer a quick reference for new and old users and to provide also a set of exercices for those who teach. If you remember having asked or answered a (short) problem, you can send a pull request. The format is: #. Find indices of non-zero elements from [1,2,0,0,4,0] .. code:: python # Author: Somebody print(np.nonzero([1,