Computer Science 111 – Fundamentals of Programming I Programming Project 5b
Due date: 11:59PM Friday, 19 October
Warmup
Run the following expressions or statements in the shell:
dir(dict)
help(dict.get)
data = {"height": 69, "weight": 160, "name": "Jim"}
data
len(data)
data["weight"]
data["hair-color"]
print(data.get("hair-color", None))
data.pop("weight")
data
list(data.keys())
list(data.values())
Copy the file doctor.py from the web page to your project5 folder (or create a new folder project5b). The program contained therein is a simplified version of a famous program called doctor that was developed at M.I.T. in the early 1960s by the M.I.T. computer scientist Joseph Weizenbaum. The doctor program engages in a conversation with the computer user, in which it mimics a nondirective style of psychotherapy. The doctor in this kind of therapy is essentially a good listener who responds to the patient’s statements by rephrasing them or indirectly asking for more information. Run this program to try out a session. After entering “quit,” run the program again by enteringmain() in the shell.
To Turn in
Launch idle3 and complete the following exercises.
- Add verbs to the replacements dictionary, so the doctor says (for example) you
are instead of you am.
- Normalize the inputs so that the processing is not case-sensitive. Hint: all of the keys in the replacements dictionary should be in lowercase and each input word should be converted to lowercase before it is sent to the dictionary.
- Modify the program so that the doctor occasionally responds with a randomly chosen hedge, such as “Please tell me more.”
- When the patient addresses the doctor personally, the persons are not changed properly in the doctor’s reply. Test the program with “you are not a helpful therapist” to see this. Fix this problem by repairing the dictionary of replacements.
- In real life, conversations often shift focus to earlier topics. Modify the doctor program to support this capability. Add each patient input to a history list. Then, occasionally choose an element at random from this list, change persons, and prepend the qualifier “Earlier you said that ” to this reply. Be sure that the history list holds at least three entries before using it and that you add inputs to the history list after replies are generated.
- Extra Credit opportunities
a) Do a version of the doctor program for another language. b) Have the doctor respond appropriately to swearing.
c) Support contractions (I’m → you’re, etc.)
Your turnin this week should be your modified doctor.py program.