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Python - GetCount help

MarkWisniewski

Hi all,

I am having trouble getting the arcp.GetCount_management to print the GetCount arcpy.AddMessage in the geoprocessing dialog window;

# Get the spatial reference
 spatialRef = arcpy.Describe(template).spatialReference.name
  
#Loop through shapfiles in folder and reproject
 for fc in fcList:
     fcspatialRef = arcpy.Describe(fc).spatialReference.name
     if fcspatialRef != spatialRef:
         arcpy.AddMessage(fc)
         arcpy.Project_management(fc, outFolder + "\\" + fc, template)
         projCount = int(arcpy.GetCount_management(fc).getOutput(0)) 
     else:
         arcpy.CopyFeatures_management(fc, outFolder + "\\" + fc)

<SPAN class="com"># Get the count from GetCount's Result object</SPAN>
     arcpy.AddMessage("{0} datasets have been reprojected to: {1} and saved in {2}".format(projCount, spatialRef, OutFolder))

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Accepted answers

jskinner

HI Ernst,

I don't believe you can use 'format' for the arcpy.AddMessage function. Try the following instead:

arcpy.AddMessage(str(projCount) + " datasets have been reprojected to: " + spatialRef + " and saved in " + OutFolder)

All comments

XanderBakker

Although you marked you question as solved already, let me add some additional information. You can use a format statement inside the arcpy.AddMessage statement. I do it all the time and there is really no reason why you shouldn't.

I do see some strange indenting in you code, which may be the reason for a possible error. Was there an error occurring? Look at the slightly changed code below (I commented the project and copy statements)

import arcpy, os
template = arcpy.GetParameterAsText(0)
arcpy.env.workspace = arcpy.GetParameterAsText(1)
OutFolder = arcpy.GetParameterAsText(2)

# Get the spatial reference
spatialRef = arcpy.Describe(template).spatialReference.name

# create a list of featureclasses in the current workspace
fcList = arcpy.ListFeatureClasses()

#Loop through shapfiles in folder and reproject
for fc in fcList:
    fcspatialRef = arcpy.Describe(fc).spatialReference.name
    if fcspatialRef != spatialRef:
        arcpy.AddMessage("Projecting: {0}".format(fc))
        # arcpy.Project_management(fc, os.path.join(outFolder , fc), template)
        process = "reprojected to"
    else:
        arcpy.AddMessage("Copying: {0}".format(fc))
        process = "copied using"
        # arcpy.CopyFeatures_management(fc, os.path.join(outFolder,fc))

    projCount = int(arcpy.GetCount_management(fc).getOutput(0))
    # Get the count from GetCount's Result object
    arcpy.AddMessage("{0} features (not datasets) have been {3}: {1} and saved in {2}".format(projCount, spatialRef, OutFolder, process))

Depending on the inputs selected, this produced the following output in the geoprocessing window.

In case the sr is different:

Executing: revisarmensajes \Xander\GeoNet\DistFireHouse\datatest\firehistory.shp \Xander\GeoNet\DistFireHouse\shp \Xander\GeoNet\DistFireHouse\test
Start Time: Thu Apr 16 06:50:31 2015
Running script revisarmensajes...
Projecting: firehistory_NAD_fips3002_feet.shp
636 features (not datasets) have been reprojected to: NAD_1983_UTM_Zone_13N and saved in \Xander\GeoNet\DistFireHouse\test
Projecting: housesaledata.shp
7204 features (not datasets) have been reprojected to: NAD_1983_UTM_Zone_13N and saved in \Xander\GeoNet\DistFireHouse\test
Completed script revisarmensajes...
Succeeded at Thu Apr 16 06:50:31 2015 (Elapsed Time: 0,08 seconds)

In case the sr is the same:

Executing: revisarmensajes \Xander\GeoNet\DistFireHouse\shp\firehistory_NAD_fips3002_feet.shp \Xander\GeoNet\DistFireHouse\shp \Xander\GeoNet\DistFireHouse\test
Start Time: Thu Apr 16 06:51:17 2015
Running script revisarmensajes...
Copying: firehistory_NAD_fips3002_feet.shp
636 features (not datasets) have been copied to: NAD_1983_StatePlane_New_Mexico_Central_FIPS_3002_Feet and saved in \Xander\GeoNet\DistFireHouse\test
Copying: housesaledata.shp
7204 features (not datasets) have been copied to: NAD_1983_StatePlane_New_Mexico_Central_FIPS_3002_Feet and saved in \Xander\GeoNet\DistFireHouse\test
Completed script revisarmensajes...
Succeeded at Thu Apr 16 06:51:17 2015 (Elapsed Time: 0,08 seconds)

jskinner

HI Ernst,

I don't believe you can use 'format' for the arcpy.AddMessage function. Try the following instead:

arcpy.AddMessage(str(projCount) + " datasets have been reprojected to: " + spatialRef + " and saved in " + OutFolder)

JB1234510

For me this does the job:

Count_Lines = arcpy.GetCount_management(Meka)

print Count_Lines ?

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