Find Feature class into another feature data

Question

I am trying to find the feature classes from one feature data into another feature classes. But I'm getting nothing at the end as a result of the matc statement. The data in the arc environment is XYZ.LandCover while in the other environment data naming format is pqr_landcover

One environment is SDE and other is postgis Below is a script I'm using

import arcpy
import os, subprocess, fnmatch, string, re

arc = ("Connections\\arc.sde")

post = ("Connections\\Post.sde")

arcpy.env.workspace = arc


listfeatures = arcpy.ListDatasets()
for lf in listfeatures:
    print lf

    fclist = arcpy.ListFeatureClasses("","",lf)
    for fc in fclist:
         print fc
    arcpy.env.workspace = post
    postgisdata = arcpy.ListDatasets()
    for postg in postgisdata:
      print(postg)
    postlist = arcpy.ListFeatureClasses("", "",postg)
    for postfc in postlist:
        print postfc


        if postfc in fc:
                matches = matches+1
        if matches > 0:

            print str(matches)+" match found for "+postfc

        else:
            print "No matches found for "+postfc

Answer 1

There are two issues here:

1. You need to declare your matches variable before you use it, if you are going to use in the manner that you are.
2. You have to get the unqualified names in order to compare them. Otherwise the name of the user or database etc. will make your names not match.

I'm also not sure if you have your workspaces written correctly. I solved the problem by putting the script into a script tool. To put it back to a direct call, replace "arcpy.AddMessage(" with "print " and remove the ending parenthesis.

I left lots of messages so you can see how it works. Sorry if this causes any confusion!

This is how I got your script to work.

import arcpy, traceback, sys
import os, subprocess, fnmatch, string, re

arc = arcpy.GetParameterAsText(0) # WORKSPACE
post = arcpy.GetParameterAsText(1) # WORKSPACE

try:

    arcpy.env.workspace = arc

    listfeatures = arcpy.ListDatasets()

    for lf in listfeatures:
        arcpy.AddMessage("lf: " + lf)

        fclist = arcpy.ListFeatureClasses("","",lf)
        fclist_names = [] # NEED LIST OF UNQUALIFIED TABLE NAMES
        for fc in fclist:
             arcpy.AddMessage("fc: " + fc)
             n = fc.split(".")[len(fc.split("."))-1] # GET UNQUALIFIED TABLE NAME
             arcpy.AddMessage("n: " + n)
             fclist_names.append(str(n)) # APPEND UNQUALIFIED TABLE NAME TO LIST

        arcpy.env.workspace = post

        postgisdata = arcpy.ListDatasets()
        for postg in postgisdata:
            arcpy.AddMessage("postg: " + (postg))
            # NEED TO MAINTAIN INDENT HERE TO CONTINUE DATASET LOOP
            postlist = arcpy.ListFeatureClasses("", "",postg)
            for postfc in postlist:
                arcpy.AddMessage("postfc: " + postfc)
                matches = 0 # NEED TO DECLARE THE MATCHES VARIABLE
                n2 = postfc.split(".")[len(postfc.split("."))-1] # GET UNQUALIFIED TABLE NAME
                arcpy.AddMessage("n2: " + n2)
                if n2 in fclist_names: # NEED TO CHECK NAME AGAINST NAME
                    matches = matches+1
                if matches > 0:
                    arcpy.AddMessage(str(matches)+" match found for "+postfc)
                else:
                    arcpy.AddMessage("No matches found for "+postfc)

except:
    # PRINT ERROR MESSAGES
    tb = sys.exc_info()[2]
    tbinfo = traceback.format_tb(tb)[0]
    pymsg = tbinfo + "\n" + str(sys.exc_type)+ ": " + str(sys.exc_value)
    arcpy.AddError("Python Messages: " + pymsg + " GP Messages: " + arcpy.GetMessages(2))

finally:
    del arc, post, listfeatures