<ul><li>Data types specify the kind of value/data a variable can hold. They include Integer or int, String or str, Boolean or bool, Float, and Character or char.</li><li>Variables help us reference a piece of data for later use. They can hold any data type. Rules for variables include starting with a letter, excluding spaces and special characters, and being case-sensitive.</li><li>Examples of valid variable names are footballers_names, ages45, x, and Food. Examples of invalid variable names are footballers-names, 42age, and snow bunny.</li><li>To know the value of a variable, use the print function without quotes around the variable name.</li></ul>

Introduction to data analysis with Python: Part 1 - Data types and Variables

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