system shell prompt working directory macrosdecorators versus __main__ module - manager functions - map built-in function benchmarking generator expressions versus - homegrown timing module and - iteration and - list comprehensions versus loop coding techniques and - parallel traversals - timing calls example version considerations mapattrs module mapping operations about dictionaries and - functions and - mapping attributes to inheritance sources - mapping values to keys missing keys - math module about built-in numeric tools floor function trunc function mathematical operations about division - expression operators nesting matlab numeric programming system matrixes list comprehensions and - nested lists and max built-in function membership in operator and operator overloading and - memory management automatic garbage collection generator expressions and index storing strings metaclasses about built-in object types and - call pattern issues and class decorators and - - - class statement and coding - customizing construction and initialization declaring - descriptors and factory functions and inheritance and - instances and - - methods in - model overview - operator overloading and - superclasses versus type object and usage considerations - usage examples - version considerations - metafunctions - metaprograms - method resolution order (see mromethods (see also operator overloadingabout adding - - attribute fetches augmenting - binary operator - bound - chaining coding - decorators and - - dictionary - exception handler - expressions and file functions and instance list - metaclass - number-specific