August 29th: I/O, Variables, Assignment

Lesson Outline¶

Announcements

• HW 1; due Wednesday by 11pm. Submit via canvas

Lecture

• Python statements

Submission Requirements

• Installing Thonny, flake8
• Comment Format
• Attribution statement

Fixing Code

• Download payroll.py and setup.cfg
• Using Thonny, run payroll.py first to see how it works
• Run !flake8 payroll.py in the shell
  • You should see several lines of output
  • payroll.py:4:18 means "Line 4, Char 18"
• Correct each issue, one by one, in the editor
  • Rerun flake8 by pressing Up+Enter in the shell

Class Activity Using Thonny

• Activity 1: copy the code below into Thonny, save as WelcomeName.py

  # display a welcome message
  print("Welcome to Python 3!")
  
  # give the user a compliment
  name = input("What's your name? ")
  print(name, "is a great name!")
  

• Activity 2: copy one line at a time into the shell. Notice the result as you execute each line. If error message, read carefully. Work on correcting the errors.

  input("enter the mass in grams: ")
  mass = input("enter another mass in grams: ")
  mass
  unit = input("enter the units for mass: ")
  ten = 10
  print(ten / 2)
  print(mass, unit)
  print(mass / 2)
  abs(-1)
  abs(-1 * ten)
  abs(-1 + 5)
  

• Activity 3: copy one line at a time into the shell. Notice the result as you execute each line. If error message, read carefully and correct the errors.

  data = 12
  data
  Data
  Data = 34
  data
  Data
  3data = "hello"
  data3 = "world"
  data3 = hello
  hot = 273 + 100
  273 + 100 = hot
  hot
  hot - 100
  hot
  cold = hot - 300
  

Your To-Do List¶

Check out the TA hours!

• TAs

By the end of today

• Pre-Survey: Please submit this "quiz" if you haven't already!
• Get the required textbook and read Chapter 1: Statements

If late addig the course

• Installing Thonny, flake8
• Complete the Chapter 1 "orange" textbook activities, must do this through canvas to receive credit.

Due Wednesday at 11pm

• Submit HW 1 through canvas and check out the Help page