How To Write In Python 3

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How to Write in Python 3

Python 3 is a high-level, general-purpose programming language. It is designed to be easy to read and write, and its syntax is similar to that of English. This makes it a good choice for beginners and for writing complex programs.

Getting Started

To get started with Python 3, you will need to install it on your computer. You can download the latest version from the official Python website.

  1. Once you have installed Python 3, you can open a terminal window and type the following command to start the Python interpreter:
    2. $ python3
  2. The Python interpreter will start and you will see a >>> prompt. This is where you can enter Python code.
  3. To write a Python program, you can use a text editor or IDE (Integrated Development Environment).
  4. Once you have written a Python program, you can save it with a .py extension.
  5. To run a Python program, you can type the following command in a terminal window:
    6. $ python3 program_name.py

Basic Syntax

Python 3 has a simple and straightforward syntax. Here are some of the basic syntax rules:

  • Statements in Python end with a newline character.
  • Indentation is significant in Python. All statements that are part of a block of code must be indented with the same number of spaces.
  • Comments in Python start with a # character.
  • Python has a number of data types, including integers, floats, strings, and lists.
  • Variables in Python are declared using the = operator.

Hello World

The following is a simple Python program that prints “Hello World” to the console:

“`python
print(“Hello World”)
“`

To run this program, you can type the following command in a terminal window:

$ python3 hello_world.py

This will print the following output to the console:

Hello World

Conclusion

This is just a brief introduction to writing in Python 3. For more information, you can refer to the official Python documentation or take an online Python course.

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