10 most common questions from beginner Python developers

Python is a popular programming language. It is simple, understandable and suitable for solving various tasks. If you have just started learning Python, you probably have a lot of questions. In this article, we will answer the most popular of them.

1. How to install Python?

To install Python, do the following:

1. Visit the website python.org.

2. Download the latest version of Python for your operating system.

3. Install Python by following the instructions.

4. If you are using Windows, do not forget to enable the "Add Python to PATH" option.

After installation, check if everything works. Enter in the terminal:

python --version
python3 --version

This will show the installed version of Python.

2. How to write and run your first program?

Write a simple program:

1. Open a text editor (for example, Notepad++).

2. Enter the following code:

   print("Hello, world!")

3. Save the file with the extension .py, for example hello.py.

4. Open the terminal, go to the folder with the file and enter:

   python hello.py

If you did everything correctly, you will see the message: Привет, мир!.

3. Where to write the code?

Different tools are suitable for working with Python:

• Simple editors:

  • Notepad++ is a lightweight editor with code highlighting.

  • VS Code is a popular editor with many extensions.

• IDE (integrated development environments):

  • PyCharm is a convenient environment for working with large projects.

  • Thonny is a simple IDE for beginners.

• Online tools:

  • Replit or Google Colab — allow you to write code directly in the browser.

4. What do you need to know to get started?

Here are the main topics worth exploring:

1. Variables and data types:

   имя = "Alice"
   возраст = 20
   студент = True

2. Conditional operators:

   if возраст >= 18:
       print("You are an adult")
   else:
       print("You are a child")

3. Cycles:

   for i in range(5):
       print(i)

4. Functions:

   def приветствие(имя):
       print(f"Hi {name}!")

5. How is Python 3 different from Python 2?

Python 2 is no longer supported, so learn Python 3. The main difference is that in Python 3 all strings are automatically processed as Unicode. Also, the print function requires parentheses:

print("Hello")  # Python 3

6. What are Python libraries and how to use them?

Libraries are ready-made sets of code. To install the library, use the command:

pip install имя_библиотеки

Examples:

• requests — for working with Internet requests:

• import requests response = requests.get("https://api.github.com") print(response.json())

• pandas — for working with tables:

• import pandas as pd данные = pd.DataFrame({"Name": ["Alice", "Bob"], "Age": [25, 30]}) print(данные)

7. What projects to choose for practice?

Here are some ideas:

• For beginners:

  • A calculator is a program that performs addition, subtraction, multiplication, and division.

  • Guess the number is a game in which the computer guesses a number and the user tries to guess it.

• For those who are already familiar with the basics:

  • A password generator is a script that creates random passwords.

  • A file scanner is a program that searches for files with a specific extension.

8. What should I do if the program does not work?

Mistakes are normal. Here's what to do:

1. Read the error message. It will tell you what is wrong.

2. Add print. This will help you see what is happening in the program.

3. Use a debugger. Many editors support debug mode.

4. Ask for advice. For example, ask a question on the forum or in the Telegram channel.

9. What resources will help you learn Python?

• Books:

  • "Learning Python" by Mark Lutz — a detailed guide for beginners.

  • "Automating Routine Work with Python" Alla Swigart — real-life examples.

• Our materials:

  • Coursme.com - articles and courses.

  • Telegram channel: Coursme - useful materials.

  • The "Kodik" mobile application will help you learn the basics in an interactive mode.

10. How to become better in Python?

• Practice. Solve problems every day.

• Learn from other people's code. See examples on GitHub.

• Participate in projects. Work on your ideas.

• Explore new libraries. For example, try Flask to create websites.

• Don't give up. Consistency is the key to success.

Start learning Python today! Use our materials and get better every day. Good luck!