Class 5 – Friday, September 7

It's all about you

Show understanding — Put it altogether now — Yes you all can do

---

Look both ways

• Back or ahead

---

Form

• Help improve CS 1112

---

Agenda

• Demontrate your own chresthomatics abilities by solving and submiting problem solutions before the end of class.

---

Galleries

• Nothing but the truth

---

Enlightening examples

• tao.py

• Shows the proper way of converting the splitting of a string made up of numberic characters into individual numbers.

• favorites.py

• Introduces the string member function split(). Its called a member because every string can be called upon to produce a split up version of itself. The value of a split() invocation is the list of substrings (words) that make up the string being told to split(). The function is handy for breaking up user input into its individual parts.

• The final version of the program shows that every string has a member function for inspecting itself. The split() function hands back the list of words that make up the string.

• being_powerful.py

• Uses the built-in cast functions int() and float() to convert numeric strings into the numbers they represent.

• The final version of the program shows the two casts using built-in functions int() and float() to convert the supplied string-based inputs into numerics.

---

Homework requirement

• A numeric value display must be from the value of a variable; i.e., there will never be arithmetic calculations within a print() statement.

• All variables should be named indicating their purpose/usage.

• Always end each prompt with a space; e.g., input( 'What is something you consume daily?: ' )

---

Homework warning

• The testing of your programs will use inputs different from those shown in problem discussion.

---

In-class homework requirements

• Demonstrate to a classmate that you have met the problem specifications. Identify those person(s) as part of the header comments for your programs.

• Ensure your checkers have also been successfully checked out by somebody(s).

---

Program complimenter.py

• For a single user-supplied integer age, print out a tasteful compliment based on the supplied age.

• Requirements

• The faux (complimentary) age is the user-supplied age minus five years.

• The faux age is to be integer.

• The program does not attempt to get more than one input from the user.

• Three different program runs

• The above header means what it literally says. The below boxes each show a different program run; i.e., your program is to perform single age calculation each time it is run.

  Enter your age: 19

  You don’t even look 14

  Enter your age: 111

  You don’t even look 106

  Enter your age: 20

  You don’t even look 15

• Suggested code outline

• Prompt user to supply an age

• Convert user reply to integer

• Compute supposed age

• Print the result of the computation

---

To do list

• Ensure familarity by reading about Python variables, assignment, and input

---

 

---

 

 

 
   
   
   
 

© 2019 Jim Cohoon

Resources from previous semesters are available.