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Python is a versatile, high-level programming language that is widely used for web development, data analysis, machine learning, and artificial intelligence. It is known for its simplicity, readability, and ease of use. If you're new to programming or just getting started with Python, this article will cover the fundamentals that you need to know.
Before you can start programming in Python, you need to have it installed on your computer. Python can be downloaded and installed from the official Python website (python.org). You'll need to choose the appropriate version for your operating system (Windows, macOS, or Linux). It is recommended to use the latest stable version of Python.
print("Hello, world!")
Save the file with a .py extension (such as hello.py) and then open a terminal or command prompt. Navigate to the directory where you saved the file and type the following command:
python hello.py
You should see the output "Hello, world!" printed to the terminal. Congratulations, you've written your first Python program!
Variables are used to store values that can be used later in your program. To create a variable in Python, you simply need to give it a name and assign it a value. For example:
name = "Alice"
age = 25
In this example, the variable name is a string that contains the value "Alice", and the variable age is an integer that contains the value 25.
Python has several built-in data types, including:
To determine the data type of a variable, you can use the type() function:
x = 42
print(type(x)) # output: <class 'int'>
y = 3.14
print(type(y)) # output: <class 'float'>
z = "hello"
print(type(z)) # output: <class 'str'>
Operators are used to perform operations on variables and values. Python has several types of operators, including:
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