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Python Variables

In Python, a variable is a name that is used to refer to a value. Variables are used to store data values and to assign them to names that can be used to access the data.

Creating a variable in Python is as simple as assigning a value to a name. For example:

x = 10
message = "Hello, world!"

In the above code, x and message are variables that have been assigned the values 10 and “Hello, world!”, respectively.

Python is a dynamically-typed language, which means that the type of a variable is determined at runtime, rather than being fixed when the code is written. This means that you can assign a value of any type to a variable, and the type of the variable can change over the course of the program.

x = 10  # x is an integer
x = "hello"  # x is now a string

It is a good practice to choose descriptive and meaningful names for your variables, since this can make your code easier to understand and maintain. Python naming conventions suggest using lowercase letters and underscores for variable names, and avoiding using Python keywords and built-in function names as variable names.

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