1. You should have
C:\100 folder
A shortcut to Python IDLE on desktop

2. Recap Python has value types: int, float, str, boolean
Variables vs. functions
Both follow the naming convention
Names are case-sensitive
Lower-case first word, first letter capitalized in subsequent words
A variable is assigned a value and hold it
A function returns a value with a given argument

3. Input/Oupt Functions print(): print out the text in the argument
input(): get Python ready to accept a response (nothing in argument)
print(‘What is your age?’)
myAge = input()
What value will the variable myAge have ?

4. Past Lab 0907 Ask what the name is Ask what the major is
Ask when you started the school
Print “My name is …. studying ... from ....”
>>> print(“What is your name?”)
>>> myName = input()
Kim
>>> print (“What is your major?”)
>>> myMajor = input() CS
>>> print (“When did you start the school?”
>>> myStartYr = input()
2000
>>> print(‘My name is ‘ + myName + ‘ studying ‘ + myMajor + ‘ from ‘ + myStartYr)

5. Programming in a File
Python IDLE shell lets you write a program only once
Need to save a program and reuse it later on
Click on ‘File’ menu in IDLE, and select ‘New File’
A new file window opens up
Enter the following instructions in the new window
myName = input('Enter your name\n’)
myMajor = input('Enter your major\n')
myStartYr = input('Enter your start year\n’)
print('My name is ' + myName + ' studying ' + myMajor + ' from ' +myStartYr)

6. How to run the program ? Click on menu ‘File’ and select ‘Save as’
Save the file under C:\100 with the name, test
You should have a file C:\100\test.py
Click on menu ‘Run’ and select ‘Run Module’
Back in IDLE window, the first query should show up
Provide answers and see the final print() function prints out the sentence.
myName = input('Enter your name\n’)
myMajor = input('Enter your major\n')
myStartYr = input('Enter your start year\n’)
print('My name is ' + myName + ' studying ' + myMajor + ' from ' +myStartYr)

7. Review In the program, test.py, what are variables ?
myName = input('Enter your name\n’)
myMajor = input('Enter your major\n')
myStartYr = input('Enter your start year\n’)
print('My name is ' + myName + ' studying ' + myMajor + ' from ' +myStartYr)
In the program, test.py, what are variables ?
In the program, test.py, what are functions?

8. When to use IDLE and File
Any programs to be reused or edited should be in files
IDLE to test out a few instructions
In IDLE, enter the following
>>> myYr = input(‘What is your age? \n’)
What is your birth year?
1990
>>> type(myYr)

9. HW1 – due on Wed class (9/14) Do problems 1, 2, 6, 7, 10
from Practice Questions in Chap. 1.

10. Lab 0909
Create a new file and write a program to ask your current age and print out your age in 5 year ?
Namely, complete the print() function below:
(Caution: the date type of the variable ‘myYr’ is a string.)
myYr = input(‘What is your age? \n’)
print(‘My age in the next 5 years will be ‘
Run your program, and the screen shot to