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CSC 110 A 1 CSC 110 Introduction to Python [Reading: chapter 1]
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CSC 110 A 2 What to expect in this class Outcome: how to program in Python (algorithms, semantics/syntax, using objects, python modules, …) Class organization: Lectures, practice with sample code, homework assignments, tests and quizzes class web site seattlecentral.edu/~flepeint/pyclass
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CSC 110 A 3 What is a computer? (1) Programmer's viewpoint CPU (central processing unit): the "brain" of the computer. It can perform simple tasks very fast (e.g. adding…) Memory: where the microprocessor stores data (results of computations,…). Memory comes in many types (RAM, ROM, …) Input/Output devices: e.g. keyboard, screen, … They allow the user to interact with the computer. Our goal: Make the computer perform complex tasks for us. How: Write programs.
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CSC 110 A 4 What is a computer? (2) CPU Memory Network Welcome to Python!
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CSC 110 A 5 Programming Machine language The CPU set of instructions: coded as a series of 0's and 1's Fast Machine dependent (two different CPU don't use the same machine language) Time consuming to write programs Instead, use a high level language Closer to plain English. Programming is easier. (this doesn't mean easy!) Machine independent Can't be understood by the CPU. A translation program is required (compiler, interpreter, …)
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CSC 110 A 6 Programming languages Thousands of programming languages (many are just for research purposes) Historically (with many omissions!) FORTRAN (scientific) (50's) COBOL (business) (60's) PASCAL, BASIC, C (multi purposes) (70's) C++ (OOP) (80's), Java (90’s) Python (90’s, started by Guido Van Rossum, community-backed development process, the catchy name is a reference to Monty Python)
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CSC 110 A 7 Why are we learning Python? A modern language object oriented dynamic semantics built-in data structures extensive libraries available on all major platforms A good language to learn programming
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CSC 110 A 8 The present Python Python 3.3 (2012) Python 3: cleaned up version of Python 2 not compatible with Python 2 Software: many free products for all platforms (Unix, Mac, Windows…) available at python.org comes with a development environment (IDLE) other IDE's available (e.g. PyDev in Eclipse)
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CSC 110 A 9 Resources Text: “Python Programming" by J. Zelle http://mcsp.wartburg.edu/zelle/python/ppics2/inde x.html Another text: “How to think like a computer scientist” http://www.greenteapress.com/thinkpython/thinkC Spy.pdf Huge amount of resources on the web check python.org
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