Most efficient way to delete all rows on an ArcGIS Online feature layer with ArcPy

Use the "delete_features" method in the ArcGIS API for Python.

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Maximizing Efficiency: How to Quickly Delete All Rows in ArcGIS Online Feature Layers with ArcPy
In any GIS project, it is essential to have the ability to manipulate data with precision and efficiency. ArcGIS Online, one of the most popular GIS platforms, offers a variety of tools to perform data management tasks such as adding, modifying or deleting features. However, when dealing with large datasets, deleting multiple rows can be a time-consuming process. Fortunately, ArcPy, the Python site-package for ArcGIS, provides a straightforward and efficient way to delete all rows in ArcGIS Online Feature Layers.

Simplifying Data Management with ArcPy: The Fastest Way to Delete Rows on ArcGIS Online Feature Layers
ArcPy is a powerful Python library that allows users to automate many tasks in ArcGIS, including data management. One common need in data management is deleting rows from feature layers hosted on ArcGIS Online. This can be a time-consuming and tedious task if done manually, especially if the feature layer contains a large number of rows. Fortunately, ArcPy makes this process much simpler and faster.

Streamlining Your Workflow: Tips and Tricks for Deleting All Rows on ArcGIS Online Feature Layers Using ArcPy
As a GIS professional, you know that managing and maintaining feature layers is an important part of ensuring the accuracy and usefulness of your GIS data. One common task that you may encounter is the need to delete all rows from a feature layer on ArcGIS Online. This can be a time-consuming and tedious process, but with the help of ArcPy, you can streamline your workflow and make the task much easier.