Welcome to your ICS 32 Final Prep

Visual, Interactive, and Comprehensive Review.

Lab Quizzes

Test your knowledge on Networking, Web APIs, and File Systems with interactive quizzes.

Lecture Review

Visual review of Lectures 9-17. Explore slides, diagrams, and key concepts.

Reference

Quick access to definitions, syntax, and key concepts covered in class.

Sample Final

Simulate the final exam experience with a timer and sample questions.

Python Basics

Main Block

Ensures code only runs when executed directly, not when imported.

script.py

def main():
    print("Running")

if __name__ == "__main__":
    main()

Run Directly python script.py → Prints "Running"

Imported import script → Nothing prints

Exception Handling

Gracefully handle errors.

try:
    result = 10 / 0
except ZeroDivisionError:
    print("Cannot divide by zero")
except Exception as e:
    print(f"An error occurred: {e}")
finally:
    print("Always runs")

Try Block

Code that might raise an error.

↓ Error?

Except Block

Catches specific errors.

→

Finally Block

Runs no matter what (cleanup).

Networking & Sockets

Client-Server Communication

Client

Initiates Request

1. Connect

→

2. Send Data

→

←

3. Receive Response

Server

Listens & Responds

Server Code

with socket.socket() as srv:
    srv.bind(('localhost', 8000))
    srv.listen()
    conn, addr = srv.accept()
    # ... handle connection

Client Code

with socket.socket() as client:
    client.connect(('localhost', 8000))
    client.sendall(b'Hello')
    # ... receive response

Web APIs & JSON

JSON Data Structure

APIs typically return data in JSON format, which maps directly to Python dictionaries and lists.

JSON Response

{
  "status": "success",
  "data": {
    "id": 101,
    "name": "Product A",
    "tags": ["new", "sale"]
  }
}

Python Usage

import json
# ... fetch data ...
data = json.loads(response_text)

print(data['status']) # "success"
print(data['data']['name']) # "Product A"
print(data['data']['tags'][0]) # "new"

URL Encoding

Original:

search = "hello world & more"

→

search=hello+world+%26+more

import urllib.parse

params = {'search': 'hello world & more'}
query = urllib.parse.urlencode(params)
# Spaces -> + or %20
# Special chars (&, ?, =) -> %XX

Graphics & Animation

Coordinate System

(0,0)

→ +X

↓ +Y

x=128, y=80
width=48, height=48

canvas.create_rectangle(128, 80, 176, 128, color='blue')
# (x1, y1, x2, y2) -> Top-Left, Bottom-Right

Collision Detection (Bounding Box)

Overlap

Box 1: (x1, y1, x2, y2)

Box 2: (a1, b1, a2, b2)

overlap =
(x2 > a1) and (x1 < a2) and
(y2 > b1) and (y1 < b2)

Data Science (Pandas)

DataFrame Visualization

Index	Name	Age	City
0	Alice	25	New York
1	Bob	30	Los Angeles
2	Charlie	35	Chicago

Select Column

df['Name']
# Returns: Alice, Bob, Charlie

Filter Rows

df[df['Age'] > 28]
# Returns: Bob, Charlie

Testing

Test Lifecycle

setUp()

Prepare data/state

→

test_method()

Run logic & Assert

→

tearDown()

Clean up

class TestMath(unittest.TestCase):
    def setUp(self):
        self.val = 10  # Runs before EVERY test

    def test_add(self):
        self.assertEqual(self.val + 5, 15)

    def tearDown(self):
        pass # Runs after EVERY test

ICS 32 Final Exam (Sample)

Ver A - 120 Minutes

Time Remaining

120:00

Exam Structure

Networks / Sockets / Protocols / Lab 7 / Project 2
Web / URLs / Web APIs / Lab 8 / Project 2
2D Lists / Images / Lab 9 / Project 3
Animation / Lab 10
Test Driven Development / unit tests
Data Visualization / Basic ML / Lab 11 / Project 4

Sample Questions

1. Conceptual

What is an IP address? Give an example.

An IP (Internet Protocol) address is a unique address that identifies a device on the internet or a local network. It allows the system to be recognized by other systems connected via the Internet Protocol.
Example: 192.168.1.1 (IPv4) or 2001:db8::1 (IPv6).

2. Code Comprehension

Given the provided server code, what happens when the code is executed?

3. Coding

Write a client program by implementing the start_client function. The client will first connect, then prompt user, then send data.

def start_client(server_address, server_port):
    with socket.socket() as client:
        client.connect((server_address, server_port))
        
        send = client.makefile("w")
        recv = client.makefile("r")
        
        print(f"client connected to {server_address} on {server_port}")
        
        while True:
            msg = input("Enter message to send: ")
            send.write(msg + "\r\n")
            send.flush()
            
            srv_msg = recv.readline().strip()
            print("Response: ", srv_msg)