- [classtools.py](classtools.py) assorted class utilities and tools

- [formats.py](formats.py) various specialized string display formatting utilities.

- [mydir.py](mydir.py) a module that lists the namespaces of other module

- [mymap.py](mymap.py) different ways of implementing map

- [myzip.py](myzip.py) different ways of implementing zip

- [permute.py](permute.py) implemented permute

- [reloadall.py](reloadall.py) transitively reload nested module

- [scramble.py](scramble.py) a iterable scrambler

- [streams.py](streams.py) give me reader, writer and a converter

- [timer.py](timer.py) Homegrown timing tools for function calls.

- [timer2.py](timer2.py) Homegrown timing tools for function calls.

- [timer3.py](timer3.py) Homegrown timing tools for function calls.