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ME 4990�Introduction to CS

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Introduction to Python

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Outline

  • Introduction
  • Basic Python Grammar
    • AD Chapter 2
    • AD Chapter 3

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Course Introduction

  • Mission statement
    • “Basic” Python Programming
    • Introduction to Data Science
    • Jobs?

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  • About me
    • Yizhe Chang
    • Major in ME, doing things in CS, learned Python at age of 30
    • Interested in, not so sure, er EE?
    • The course I feel cool: HMC E85

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Arrangement

  • 4 Modules

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    • Module 1: Python Programming
    • Module 2: Classifier with Bayes (Wired Logic, Hard)
    • Module 3: “Modern” learning technique
    • Module 4: Seminar – Going deep

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HW

  • 6 HWs
    • 2 for Module 1
    • 2 for Module 2
    • 2 for Module 3
    • 0 for Module 4 (maybe a bonus one?)

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  • Mid-term
    • Module 1 and module 2 (module 2 most)

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  • Final Project
    • A machine learning project

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How to find me

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  • Zoom links on blackboard (cannot put on public, sorry)

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  • Monday: 1:30-2:15pm (PDT)
  • Tuesday and Wednesday: 4:30pm-6:30pm (PDT) (Last 45 min by email appointment)
  • Open-door policy (just email me, I am at an unspecific place in Pomona, CA)

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Pre-req

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  • None specified. But you want to drop if you hate:

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  • ME1101: Computation for ME students
  • MAT2240: Linear Algebra

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Textbook: thank online legit free version

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  • (Referred as AD in course) �Think Python: How to Think Like a Computer Scientist by Allen B. Downey�O' Reilly Press, 2015�(Online)(Amazon)(O'Reilly)
  • (Referred as DB in course) �Bayesian Reasoning and Machine Learning by David Barber�Cambridge University Press, 2012�(Online)(Cambridge)
  • (Referred as HTF in course)�The Elements of Statistical Learning: Data Mining, Inference, and Prediction, Second Edition by Trevor Hastie, Robert Tibshirani, Jerome Friedman�Springer, 2009�(Online)(Amazon)(Springer)�

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Python

  • Syntax: almost non-exist compared to C
  • Grammar and function: almost same as MATLAB
  • Free, https://www.python.org/
  • Bad: indention

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  • Why Python so popular: I don’t know…

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Guido van Rossum

https://gvanrossum.github.io/

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Python Operator (AD chapter 1)

https://www.w3schools.com/python/python_operators.asp

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Python Operator

https://www.w3schools.com/python/python_operators.asp

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Python Operator

https://www.w3schools.com/python/python_operators.asp

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Python Operator

https://www.w3schools.com/python/python_operators.asp

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Python Operator

https://www.w3schools.com/python/python_operators.asp

http://wiki.python.org/moin/BitwiseOperators

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Looks… easy

  • a=40+2
  • b=43-1
  • c=6*7
  • d=84/2
  • e=6**2+6

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  • Congrat!

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Variable (AD chapter 2)

  • You can create variable of almost any name

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  • Here is a list of names you cannot use:

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String

  • String operation is never as simple as python:
  • Use single quote (‘’), although some version of python also allows double quote (“”)

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Comment

  • Use sharp sign (#) for comment

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Installing Python: nightmare

  • Infinite development environment
  • VSCode: (simple but modern)

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  • Online compiler: