Using Python for Data Analysis - Real Python
Briefly

Using a workflow also helps futureproof your analysis methodology. By following the defined set of steps, your efforts become systematic, which minimizes the possibility that you'll make mistakes or miss something.
There's no single data workflow process that suits every analysis, nor is there universal terminology for the procedures used within it. To provide a structure for the rest of this tutorial, the diagram below illustrates the stages that you'll commonly find in most workflows.
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