*Cenage Python** Modify the doctor application discussed in this chapter so that it tracks clients by name and history. A Doctor object has its own history list of a patient’s inputs for generating replies that refer to earlier conversations, as discussed in Chapter 5.A Doctor object is now associated with a patient’s name. The client application takes this name as input and sends it to the client handler when the patient connects.Update the doctorclienthandller.py file so theDoctorClientHandler class checks for a pickled file with the patient’s name as its filename ("[patient name].dat”). If that file exists, it will contain the patient’s history, and the client handler loads the file to create the Doctor object. Otherwise, the patient is visiting the doctor for the first time, so the client handler creates a brand-new Doctor object. When the client disconnects, the client handler pickles the Doctor object in a file with the patient’s name. """ File: doctorclienthandler.py Project 10.4 Client handler for providing non-directive psychotherapy. Paient provides a user name, and client attempts to load that patient's doctor from a file. If the file does not exist, a new doctor is created. The doctor is saved to a file when the client disconnects. """ from codecs import decode from threading import Thread from doctor import Doctor BUFSIZE = 1024 CODE = "ascii" class DoctorClientHandler(Thread): """Handles a session between a doctor and a patient.""" def __init__(self, client): Thread.__init__(self) self.client = client self.dr = Doctor() def run(self): self.client.send(bytes(self.dr.greeting(), CODE)) while True: message = decode(self.client.recv(BUFSIZE), CODE) if not message: print("Client disconnected") self.client.close() break else: self.client.send(bytes(self.dr.reply(message), CODE))

*Cenage Python** Modify the doctor application discussed in this chapter so that it tracks clients by name and history. A Doctor object has its own history list of a patient’s inputs for generating replies that refer to earlier conversations, as discussed in Chapter 5.A Doctor object is now associated with a patient’s name. The client application takes this name as input and sends it to the client handler when the patient connects.Update the doctorclienthandller.py file so theDoctorClientHandler class checks for a pickled file with the patient’s name as its filename ("[patient name].dat”). If that file exists, it will contain the patient’s history, and the client handler loads the file to create the Doctor object. Otherwise, the patient is visiting the doctor for the first time, so the client handler creates a brand-new Doctor object. When the client disconnects, the client handler pickles the Doctor object in a file with the patient’s name. """ File: doctorclienthandler.py Project 10.4 Client handler for providing non-directive psychotherapy. Paient provides a user name, and client attempts to load that patient's doctor from a file. If the file does not exist, a new doctor is created. The doctor is saved to a file when the client disconnects. """ from codecs import decode from threading import Thread from doctor import Doctor BUFSIZE = 1024 CODE = "ascii" class DoctorClientHandler(Thread): """Handles a session between a doctor and a patient.""" def init(self, client): Thread.init(self) self.client = client self.dr = Doctor() def run(self): self.client.send(bytes(self.dr.greeting(), CODE)) while True: message = decode(self.client.recv(BUFSIZE), CODE) if not message: print("Client disconnected") self.client.close() break else: self.client.send(bytes(self.dr.reply(message), CODE))

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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Question

**Cenage Python** Modify the doctor application discussed in this chapter so that it tracks clients by name and history. A Doctor object has its own history list of a patient’s inputs for generating replies that refer to earlier conversations, as discussed in Chapter 5.A Doctor object is now associated with a patient’s name. The client application takes this name as input and sends it to the client handler when the patient connects.Update the doctorclienthandller.py file so theDoctorClientHandler class checks for a pickled file with the patient’s name as its filename ("[patient name].dat”). If that file exists, it will contain the patient’s history, and the client handler loads the file to create the Doctor object. Otherwise, the patient is visiting the doctor for the first time, so the client handler creates a brand-new Doctor object. When the client disconnects, the client handler pickles the Doctor object in a file with the patient’s name.

"""

File: doctorclienthandler.py

Project 10.4

Client handler for providing non-directive psychotherapy.

Paient provides a user name, and client attempts to load

that patient's doctor from a file. If the file does not

exist, a new doctor is created. The doctor is saved to a

file when the client disconnects.

"""

from codecs import decode

from threading import Thread

from doctor import Doctor

BUFSIZE = 1024

CODE = "ascii"

class DoctorClientHandler(Thread):

"""Handles a session between a doctor and a patient."""

def __init__(self, client):

Thread.__init__(self)

self.client = client

self.dr = Doctor()

def run(self):

self.client.send(bytes(self.dr.greeting(),

CODE))

while True:

message = decode(self.client.recv(BUFSIZE),

CODE)

if not message:

print("Client disconnected")

self.client.close()

break

else:

self.client.send(bytes(self.dr.reply(message),

CODE))

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