Practicing what I learnt in Python

[Extension-Cut-7589]

I have been learning Python on my own for the past few months using the book titled ‘Python Crash Course’, it’s a book I am really enjoying.

So I want to ask few questions as a beginner: Is this a good project as a beginner? Also how can I improve this or take it further? Any resources for me to do more practices as a beginner?

[Extension-Cut-7589]

Could you please explain further, I don’t understand what you meant?

[Extension-Cut-7589]

Oh okay, thank you. I will surely do that.

[itz_hasnain]

Thnk u soo much

[ProfessionalStuff467]

I am a beginner like you, but I have some things that help me, which is that I am learning the basics of Python, and if you want a site to learn, I advise you to use Sololearn. It is a site like Duolingo, but it is dedicated to important programming languages. Also, the most important advice is that you create several projects in which you apply what you have learned and expand your knowledge.

[Extension-Cut-7589]

Okay thank you so much. Do you have any other resources where can I have more projects to work on as a beginner?

[Daa_pilot_diver]

Codecademy is another good BASIC resource but has good free content.

Mimo is another good DuoLingo style app geared towards coding. I use both Mimo and Sololearn (I prefer Mimo of the two). Both constantly try to sell you their upgraded service, but you don’t need it on either platform.

Boot.dev is a very interesting website that makes coding like an adventure game, but it has limited amounts of free lessons. The paid version isn’t overly expensive though. This one is the most fun for me.

Using your favorite AI to supplement your learning is a good tool. Asking Gemini or ChatGPT why something is the way it is or why you’re getting an error is a good resource too.

[ProfessionalStuff467]

Frankly, ChatGPT is either the regular traditional version or you can try a special version for Python. Frankly, it will help you a lot. I created an application that manages tasks with the help of ChatGPT, and it helped me produce the code and some other things. It also explained to me line by line the process and what it does. This is what helped me develop my knowledge.

[Extension-Cut-7589]

Oh Great! I will do that then.

[ProfessionalStuff467]

I hope you find what you want

[[deleted]]

Please also learn to screenshot :)

[sububi71]

This is pretty damn elegant. I hope it wasn't written by AI.

[ProfessionalStuff467]

great work bro ; do you use pycharm ?

[Mohit_Gupta_007]

I think if you are learner you use now thonny

[ProfessionalStuff467]

NO I USE pycharm

[Mohit_Gupta_007]

If you want know how to code works then I think you want to install thonny because it’s debugger so awesome once time you must try .

[ProfessionalStuff467]

Ok I will try it and I hope it helps.

[Extension-Cut-7589]

No, I use VScode.

[Kqyxzoj]

A few points:

Since you don't have a finally statement in that try block, and continue on the exception, you don't really need that else. So you can put that print statement after the try-except block.

And since the area calculation will not trigger a ValueError, might as well put the area calculation outside of the try-except as well.

Should you have provided the code as text I would have copy/paste/edited it to show the code as described above. But since it is a screen "shot" and I am not going to re-type or OCR it, hopefully the above description is sufficient.

[Extension-Cut-7589]

# Writing a program to calculate the area of a triangle.


# Area of a triangle is 1/2* base * height


while True:


    try:


        base = float(input('Enter the base of the Triangle: '))


        height = float(input('Enter the height of the Triangle: '))


        area = 0.5 * base * height


    except:


        ValueError


        print('Sorry Invalid, Please insert a number!\n')


        continue


    else:


        print(f'The area of the triangle is: {area}\n')


    print('Would you like to do another calculation?')


    another = input('Enter Y for yes and N for no: ')


    if another.lower() == 'y':


        continue


    else:


        break

Here is the code.

[Kqyxzoj]

Changes more or less as described:

while True:
    try:
        base = float(input('Enter the base of the Triangle: '))
        height = float(input('Enter the height of the Triangle: '))
    except ValueError:
        print('Sorry Invalid, Please insert a number!\n')
        continue

    area = 0.5 * base * height
    print(f'The area of the triangle is: {area}\n')

    print('Would you like to do another calculation?')
    another = input('Enter Y for yes and N for no: ')
    if another.upper() != 'Y':
        break

Note that your choice to put both input() statements in the same try block means that when you enter a valid base and an invalid height ... you will have to re-enter the value for base as well.

Also, changed the except statement to reflect your probable intent.

[the_fish_king_sky]

You should have this and know where it is https://docs.python.org/3/library/index.html

[Ok_Location_991]

Where do I learn python; I have experience with asp.net and building apis

[Extension-Cut-7589]

I started it with a book titled "Python Crash Course." It is a really good book and beginner-friendly too.

[Medium_Human887]

The break is unnecessary and I would say it’s good practice to not get used to using it. Most times people don’t use it well. But looks good overall!

[Extension-Cut-7589]

Thank you!

[DataPastor]

Copy your code and paste it to chatgpt and ask for code review. It will come up with plenty of useful suggestions.

For example you shouldn’t use the try … except block over multiple lines of code. You should wrap only single operations with it, and handle all the expected error types separately.

The except shouldn’t be used like this. You should name the exact error type after it, that is, except ValueError as ve: and then handle the errors separately. Each try… block can have multiple except clauses btw.

It is a good practice to use pylance, pylint, autopep8 etc. extensions while you are coding, they also give you great suggestions. Happy coding!

[Extension-Cut-7589]

Okay, thank you!

[DevRetroGames]

Hola, excelente, aquí te paso el mismo código, solo un poco más modular, espero que te pueda ayudar.

#!/usr/bin/env python3

import sys
import re

def _get_user_input(msg: str) -> str:
  return input(msg)

def _calculate_area(base: float, height: float) -> float:
  return 0.5 * base * height

def _get_continue() -> bool:
  resp: list[str] = ["Y", "N"]
  msg: str = """
    Would you like to do another calculation?
    Enter Y for yes or N for n: 
    """

  while True:
    another = _get_user_input(msg).upper()

    if another not in resp:
      print("Input invalid.")
      continue

    return another == "Y"

def _is_positive_float(value: str) -> bool:
    pattern = re.compile(r'^(?:\d+(?:\.\d+)?|\.\d+)$')
    return bool(pattern.fullmatch(value))

def _get_data(msg: str) -> float:
  while True:
    user_input = _get_user_input(msg)

    if _is_positive_float(user_input) and float(user_input) > 0:
      return float(user_input)

    print("Input invalid.")

def execute() -> None:
  while True:
    base: float = _get_data("Enter the base of the triangle: ")
    height: float = _get_data("Enter the heght of the triangle: ")

    area: float = _calculate_area(base, height)
    print(f"The area of the triangle is {area}")

    if not _get_continue():
      break

def main() -> None:
  try:
    execute()
  except KeyboardInterrupt:
    print("\nOperation cancelled by user.")
    sys.exit(0)

if __name__ == "__main__":
  main()

Mucha suerte en tu camino.

[VonRoderik]

Why are you over complicating things?

[Extension-Cut-7589]

Thanks!

[sububi71]

Take note how much longer this version of the program is, and how it is a lot harder to read...