The last line of code prints (displays) the name of each map, the name of each layer, and each layer's definition query.Īt some point, you have probably moved map data from one workspace to another. Because not all layer types support all properties, the supports method is used to test which properties a layer supports. The Layer class has many properties that can be accessed, including the name and definition query of a layer. Another for loop is used to iterate through the list of layers. For each map, the listLayers method is used to create a list of the layers. A for loop is used to iterate through each map. The next line of code creates a variable called maps using the listMaps method that returns a Python list of Map objects in the project. The first line of code creates a variable called aprx that references the open project using the ArcGISProject function with the CURRENT keyword. The name and definition query of all the layers will be “printed” (i.e., displayed in the Python window). Solution: Open the Python window instead and run the code below. Opening the Layer Properties dialog box for each layer in each map is a pain. Suppose you need to check if any of the layers in your ArcGIS Pro project have a definition query applied, and if so, view the definition queries. Snippet 1: Check Layer Definition Queries 
Each snippet below works with ArcGIS Pro 1.x, an existing project file, arcpy.mp module, and Python 3.x.You’ll soon see how a few Python tricks can speed up map management. You don’t have to be an experienced Python scripter-simply enter the code below into the Python window and check out the results. To try the snippets below for yourself, make a copy of an ArcGIS Pro project file (APRX) and move it somewhere for testing purposes.
In ArcGIS Pro, the mapping module is called arcpy.mp.
#Python snippit how to#
This post walks you through how to accomplish those same tasks using the ArcGIS Pro Python window. A previous post shared five Python code snippets to automate mapping tasks in ArcMap.
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