or (logical operator) ord((built-in) ordered collectionssee list and tuple types ordereddict type (collections module) - os module - chdir() environ mapping getcwd() listdir() makedirs() mkdir() remove() removedirs() rename() rmdir() sep attribute stat() system() walk() os path module - abspath() basename() dirname() exists() getmtime() getsize() isdir() isfile() join() split() splitext() oserror (exception) pack((struct module) package directories packages - packrat parsing parameterssee argumentsfunction parametersunpacking - parent-child relationships parsing command-line arguments dates and times text files - with ply - with pyparsing - with regexes - - xml (with dom) - xml (with sax) - xml (with xml etree) - partial((functools module) partial function application - partition(bytearray type bytes type str type pass (statement) path (environment variable) path attribute (sys module) pathsunix-style pattern attribute (regex object) pdb module - peek((file object) pep (python database api specification ) pep (function annotations) pep (introducing abstract base classes) pep (supporting non-ascii identifiers) pep (exception chaining and embedded tracebacks) persistenceof data photoimage type (tkinter module) pi (constant(math module) pickle module - dump() dumps() load()