topic Re: search in folders and .gdb and rename featureclass in Python Questions

search in folders and .gdb and rename featureclass

PeterVersteeg — Sun, 18 Jan 2015 15:41:32 GMT

Hallo,

I have a database that are in file folders and in databases (gdb format). It looks a bit like this

Main File folder

-filefolder “GIS”

-database.gdb B

-featureclass J

-featureclass K

-featureclass L

-database.gdb C

-featureclass J

-featureclass K

-featureclass L

-Filefolder E

-database.gdb F

-featureclass J

-featureclass K

-featureclass L

-database.mgb G

-featureclass J

-featureclass K

-featureclass L

So the names of the folders and the gdb’s are unique but the featuresclass in each gdb have the same name (not the same factor).

What I want is a script that search for all featureclasses J, K and L and rename them. So far I have:

import arcpy

from arcpy import env

import os

# Set the workspace for the ListFeatureClass function

arcpy.env.workspace = r"D: \GIS\ZONE1\ZONE1_007.gdb"

# Use the ListFeatureClasses function to return a list of all FC.

fclist = arcpy.ListFeatureClasses("*","ALL")

print fclist

# Rename FC

for fc in fclist:

if fc == "TEKST_XX01P_point":

arcpy.Rename_management("TEKST_XX01P_point ", "P_XX01_house")

elif fc == " TEKST_XX032_area ":

arcpy.Rename_management("TEKST_XX032_area", "A_XX032_forest")

print fclist

This works for only gdb set in my workspace. Can anyone help me with the code I need to search also the folders. I was looking at the da.walk function but this is not working for me:

import arcpy

import os

workspace = 😧 \GIS "

feature_classes = []

for dirpath, dirnames, filenames in arcpy.da.Walk(workspace,

datatype="FeatureClass",

type="Polygon"):

for filename in filenames:

feature_classes.append(os.path.join(dirpath, filename))

print filename

thank you greeting peter

Re: search in folders and .gdb and rename featureclass

XanderBakker — Sun, 12 Dec 2021 03:45:28 GMT

Hi Peter,

First of all you should really use syntax highlighting, since it makes it easier to see where the error in code are:

Posting Code blocks in the new GeoNet

So you first part of the code, after deleting some redundant code (and spaces) and correcting some indentation would be:

import arcpy

# Set the workspace for the ListFeatureClass function
arcpy.env.workspace = r"D:\GIS\ZONE1\ZONE1_007.gdb"

# Use the ListFeatureClasses function to return a list of all FC.
fclist = arcpy.ListFeatureClasses("*","ALL")

# Rename FC
for fc in fclist:
    if fc == "TEKST_XX01P_point":
        arcpy.Rename_management("TEKST_XX01P_point", "P_XX01_house")
    elif fc == "TEKST_XX032_area":
        arcpy.Rename_management("TEKST_XX032_area", "A_XX032_forest")

The da functionality works if you have access to ArcGIS 10.1 SP1 or higher. If not you may want to read Recursive list feature classes | ArcPy Café. I assume you have access to the da module and what you should read is this post: Inventorying data: a new approach | ArcPy Café (both by the ArcGIS Team Python).

A simple example is printing the name (full path) of the featureclass:

import os
import arcpy

def inventory_data(workspace, datatypes):
    """
    Generates full path names under a catalog tree for all requested
    datatype(s).

    Parameters:
    workspace: string
        The top-level workspace that will be used.
    datatypes: string | list | tuple
        Keyword(s) representing the desired datatypes. A single
        datatype can be expressed as a string, otherwise use
        a list or tuple. See arcpy.da.Walk documentation
        for a full list.
    """
    for path, path_names, data_names in arcpy.da.Walk(
            workspace, datatype=datatypes):
        for data_name in data_names:
            yield os.path.join(path, data_name)

for feature_class in inventory_data(r"c:\Forum", "FeatureClass"):
    print feature_class

From there you can include the logic for renaming the featureclass.

Kind regards, Xander

Re: search in folders and .gdb and rename featureclass

PeterVersteeg — Sun, 12 Dec 2021 03:45:31 GMT

Hi Xander,

First thank you for the syntax highlighting remark. I have the first part off my project working now:

import os  
import arcpy  


workspace = "D:\Documenten\GIS\Zone1\Zone1A"
datatypes = "Polygon"


def inventory_data(workspace, datatypes):  
    """ 
    Generates full path names under a catalog tree for all requested 
    datatype(s). 

    Parameters: 
    workspace: string 
        The top-level workspace that will be used. 
    datatypes: string | list | tuple 
        Keyword(s) representing the desired datatypes. A single 
        datatype can be expressed as a string, otherwise use 
        a list or tuple. See arcpy.da.Walk documentation 
        for a full list. 
    """
    for path, path_names, data_names in arcpy.da.Walk(  
            workspace, datatype=datatypes, type="Polygon"):  
        for data_name in data_names:  
            yield os.path.join(path, data_name)  
  
for feature_class in inventory_data(workspace, "FeatureClass"):  
    print feature_class

i put type in and arcpy.da.Walk also to give me more options. Going to work on the nameing part now.

again thank you.

greetings Peter