- [Y_combinator.py](sandbox/Y_combinator.py) a python implementation of the Y combinator
- [compare_dicts.py](sandbox/compare_dicts.py) a python function for comparing dictionaries
- [lazy_attributes.py](sandbox/lazy_attributes.py) a python class for lazy loading attributes
- [memoize_and_partialfuncs.py](sandbox/memoize_and_partialfuncs.py) a python implementation of memoization and piecewise definition of functions
- [piecewise_function.py](sandbox/piecewise_function.py) a better implementation of piecewise functions
- [registry.py](sandbox/registry.py) an implementation of a registry pattern that allows the registered objects to be registered either by a "with" statement or a function call
- [pydit](sandbox/pydit) open a file specified by python module name (e.g. twisted.web.http) in vim
- [modpath](sandbox/modpath) print the path to a python module on stdout
- [a_an_checker](sandbox/a_an_checker) check English text for proper usage of a/an
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