NOTEBOOKS PRO NO FOLES HOW TO
You have learned how to write and run Python code in a notebook in ArcGIS Pro. There are several other ways to run Python code, including running code in a Notebooks, running a script using a command line, or scheduling to run a script from the operating system.
There are several benefits to using Notebooks, not all of which were demonstrated in this lesson:
You have learned how to create a notebook and how to write and run Python code in a notebook. Python code run in and outside of Notebooks In addition, the ability to run a tool, or multiple tools, within a loop makes Python useful when you need to run the same process on multiple inputs. The time savings with only two tools is minor, but many workflow's consist of longer sequences of tools. If you had used the tools from their graphical user interfaces, you would have needed to run both the Buffer tool and the Pairwise Erase tool again to obtain the updated result. You were able to obtain this updated result by running the multiple lines of code as a single cell in the notebook. The resulting areas are potentially the most compromised in terms of fire service. You may need to zoom to the layer to see the remaining smaller areas. The code, without comments, is only a few lines. The code block then prints the feature class name (the contents of the fc variable) and the count (the contents of the count variable). The code block creates a variable named count and sets it equal to the result of calling GetCount on the current item from the list. In this case, the inputs are the names in the list, and the variable fc is set to each one of them, in turn, and the code in the indented block runs on it. For loops take a set of inputs and a block of indented code and run the code block on each of the inputs. The next part of the code uses a for loop. If something goes wrong, it is helpful to know what is in that variable. Printing the list isn't necessary, but it is a good way to ensure that you have the results that you expect in the variable. This time the list contains strings with the names of the feature classes. This code makes a new variable named fc_list and sets it equal to the result of running arcpy.ListFeatureClasses on the current workspace, Toronto.gdb. You used a list and list indexing earlier. The lines that are comments don't run they are there to help you understand what the code does. Comments are text that appears after the # signs. This code includes comments to explain what each step does. # Print out the name of the feature class and the count # Set the variable count equal to the result of Get Count # Run Get Count on the current fc from the list # equal to each feature class name in the list # use a loop to set the variable fc to be # works on the current workspace or a path # List the feature classes in a workspace
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