Introduction to Python - seas.upenn.edu

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Introduction to Programming Languages and TechniquesFULL Python TUTORIALLast updated 9/1 Developed by Guido van Rossumin the early 1990s Named after Monty Python Available on eniac Available for download from Python Tutorial3Python Interpretedlanguage: work with an evaluator for language expressions (like DrJava, but more flexible) Dynamically typed: variables do not have a predefined type Rich, built-in collection types: Lists Tuples Dictionaries (maps) Sets Concise4Language features Indentation instead of braces Several sequence types Strings ... : made of characters, immutable Lists [...]: made of anything, mutable Tuples(...): made of anything, immutable Powerful subscripting (slicing) Functions are independent entities (not all functions are methods) Exceptions as in Java Simple object system Iterators(like Java) and generators5Why Python ?

LEARN PYTHON BY PLAYING WITH EXAMPLES FROM THE SLIDES & MAKING UP YOUR OWN ... Basic Datatypes ... Python determines the type of the reference automatically based on what data is assigned to it. 23 (Multiple Assignment)

  Python, Basics, Example