Listing Feature Classes of Multiple geodatabase in Multiple Folder?

Question

I'm new in python scripting and try to list polyline feature classes of multiple Geodatabases. The Geodatabases are in many nested folders.For example in folder "A" I have 20 folders and in each folder i have 3 geadatabases. the question is that how can i list the feature classes of the geodatabases using Arcpy. I know simple Python codes to list feature classes in a folder such as :

import arcpy
from arcpy import env
env.workspace = ".././Data/6"
fclist = arcpy.ListFeatureClasses()
print fclist

I surf in this site and found a Q&A about How to list feature classes in multiple Geodatabases in a folder? . It was very useful but only for multi Geodatabases not multi folders.

Aaron · Accepted Answer · 2013-04-29T20:06:59.413

5

The arcpy.da.Walk function from ArcGIS 10.1 SP1 allows you to do this. The following script walks through a workspace, create a list of every polyline, and copies the polylines to an output workspace.

import arcpy
import os

in_workspace = r"C:\your\path"
out_workspace = r"C:\your\path2\temp.gdb\fds"

feature_classes = []
for dirpath, dirnames, filenames in arcpy.da.Walk(in_workspace, datatype="FeatureClass",type="Polyline"):
    for filename in filenames:
        feature_classes.append(os.path.join(dirpath, filename))

print feature_classes

# Loop through the "feature_classes" list and copy featureclasses to out_workspace
for fc in feature_classes:
    name = os.path.basename(fc) # Extract only the FC basename 
    arcpy.CopyFeatures_management(fc, os.path.join(out_workspace, name))

edited Apr 29 '13 at 20:06

answered Apr 28 '13 at 15:12

Aaron

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nice.is there any method without using sp1 ? thnx – BBG_GIS Apr 28 '13 at 15:30
I could not use this function to copy feature classes using arcpy.CopyFeatures_management How can i use this function to copy the list features ? thnx – BBG_GIS Apr 28 '13 at 19:22
1

@wetland post edited to address your comment. I hope this helps. – Aaron Apr 28 '13 at 22:43
it's not working . I just use your edited answer in loop of arcpy.da.Walk – BBG_GIS Apr 29 '13 at 10:05
I just tested the script again--all is well. What errors are you receiving? – Aaron Apr 29 '13 at 12:13
You may be missing the following from the second for loop "feature_classes.append(os.path.join(dirpath, filename))" – Aaron Apr 29 '13 at 18:10
@Aaron.ERROR 000725: Output Feature Class: Dataset D:\Il\ken\test.gdb\antalya_Rabour already exists. Failed to execute (CopyFeatures) . Thnx – BBG_GIS Apr 29 '13 at 18:11
let us continue this discussion in chat – Aaron Apr 29 '13 at 18:41

score 1 · Answer 2 · answered Apr 29 '13 at 13:32

I created the following function in Python that takes as input a starting folder and populates a global list with all the sub-folder paths. You can then step through this using the arcpy.ListWorkspaces()

import arcpy
import os

listFolders = []

def GetFolders(root):
    global listFolders
    try:
        l = os.listdir(root)
        for x in l:
            path = root + "\\" + x
            if os.path.isdir(path):
                listFolders.append(path)
                GetFolders(path) # Recursive call here!
    except Exception as e:
        print e
        # An error occurred set list to empty
        listFolders = []

Listing Feature Classes of Multiple geodatabase in Multiple Folder?

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