# Introduction In this step-by-step lab, you will learn about the Python pandas `DataFrame.idxmax()` method. This method is used to get the index of the first occurrence of the maximum value over the specified axis in a DataFrame. It excludes any null or missing values in the calculation. ## VM Tips After the VM startup is done, click the top left corner to switch to the **Notebook** tab to access Jupyter Notebook for practice. Sometimes, you may need to wait a few seconds for Jupyter Notebook to finish loading. The validation of operations cannot be automated because of limitations in Jupyter Notebook. If you face issues during learning, feel free to ask Labby. Provide feedback after the session, and we will promptly resolve the problem for you.
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