Python Classroom notes 25/Aug/2024

Process and Need for IPC

• Two applications running on same machine in different processes cannot access each other’s data (its store in private memory)
• To enable this communication, we have IPC technologies
  • Named Pipes (Windows)
  • Unix Sockets
  • File
• Next steps:
  • Need for communication between applications on different machines was introduced
    • RPC
    • Web Sites (http)
    • Web API
      • REST API
    • Web Sockets
    • GraphQL
    • gRPC

Find all the factors of the number (apart from 1 and itself)

• Samples

15 => 3,5
60 => 2,3,4,5,6,10,12,15,20,30

• Instructions

1. Hello Flora
2. number = 15
3. index = 2
4. remainder = number%index
5. if remainder == 0, say index
6. index = index + 1
7. if index < number
    7.1 go to line no 4
8. bye

Find if the number is prime or not

• Samples

7 => prime number
9 => not a prime number

• Instructions

1. Hello Flora
2. number = 7
3. index = 2
4. remainder = number % index
5. if remainder == 0 
    5.1 say not prime
    5.2 go to line no 9
6. index = index + 1
7. if index < number
    7.1 Go to line number 4
8. say prime
9. bye

Project euler 1:

• Problem Refer Here
• Instructions

1. Hello flora
2. result = 0
3. index = 2
4. max = 10
5. is_divisible = (index%3 == 0) or (index%5==0)
6. if is_divisible == True
    6.1 result = result + index
7. index = index + 1
8. if index < max
    8.1 Go to line 5
9. say result

System Setup – Windows

• Ensure Git is installed and view is added to Terminal
• Ensure Chocolatey is installed (Window 10 or above)
• Install python using chocolatey choco install python --version=3.12.5 -y
• Enable Autosave
• Now launch visual studio code an install
  • python extension
  • jupyter extension
• Window cheatshet for vs code Refer Here

System Setup – Mac

• Ensure homebrew is installed Refer Here
• Install
  • git: brew install git
  • visual studio code: brew install --cask visual-studio-code
  • python brew install python@3.12
• Now launch visual studio code an install
  • python extension
  • jupyter extension
• Visual studio code mac cheatsheet Refer Here

Lets understand debugging

• Sample code for debugging

result = 0
index = 2
max = 10
while index < max:
    if (index%3 == 0) or (index%5==0):
        result = result + index
    index = index + 1
print(f"sum = {result}")

Accounts Needed

• Github
• HackerRank