If you’ve ever written any Python at all, the chances are you’ve used iterators without even realising it. Writing your own and using them in your programs can provide significant performance ...

If you want to perform transformations on NumPy matrixes that aren’t available in NumPy’s API, a typical approach is to just iterate over the matrix in Python … and lose all the performance ...

You can do that with the read_bytes and read_text methods, which return "bytes ... up to and including the following newline) in each iteration. If you work with files on a regular basis from within ...