What are data types and variables in programming?
Data types are classifications of data that tell the compiler or interpreter how the programmer intends to use the data. Variables are containers for storing data values.
Can you give me examples of different data types?
Sure! Common data types include integers, floats, strings, and booleans. For example, an integer is a whole number, while a string is a sequence of characters.
How do I declare a variable in Python?
In Python, you can declare a variable by simply assigning a value to it, like this: my_variable = 10
.
What happens if I try to use a variable that hasn't been declared?
If you try to use a variable that hasn't been declared, Python will raise a NameError
, indicating that the variable is not defined.
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