Implementing an UpdateCursor? The 2019 Stack Overflow Developer Survey Results Are In ...

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Implementing an UpdateCursor?



The 2019 Stack Overflow Developer Survey Results Are In
Announcing the arrival of Valued Associate #679: Cesar Manara
Planned maintenance scheduled April 17/18, 2019 at 00:00UTC (8:00pm US/Eastern)ArcPy Insert Cursor not inserting all rows?How to read XY, get raster value and then update field?UpdateCursor based on results from SearchCursorUpdating null values in appended feature classUpdating attribute informationImplementing UpdateCursor?Arcpy UpdateCursor not updating fieldWriting Data Driven Pages' scale into driving layer's attribute table with arcpySearchCursor not reading the last rowComparing value with value from the next row





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0















I am writing a script assigning the ADMINAREA value to the empty LOCALITY fields from TWB_Suburbs to TWB_Property layer. I am getting:




ValueError: need more than 1 value to unpack




Is anyone able to help out?



import arcpy
# set overwrite true so that if data already exists it overwrite
arcpy.env.OVERWRITE = True
arcpy.env.overwriteOutput = True

# make query for empty LOCALITY values
query = '"LOCALITY" = ' ''

# assign workspace
arcpy.env.workspace = "C:Usersdata"

# make feature layer from property shape file, apply empty locality values query
arcpy.MakeFeatureLayer_management("TWB_Property.shp", "TWB_Property_Layer", query)

# make feature layer for suburbs shape file
arcpy.MakeFeatureLayer_management("TWB_Suburbs.shp", "TWB_Suburbs_Layer")

# Select empty properties in Properties layer WITHIN Suburbs layer
arcpy.SelectLayerByLocation_management ("TWB_Property_Layer", "WITHIN", "TWB_Suburbs_Layer")

#create empty list
suburbList = []

# iterate over admin layer field values, to get it's value
with arcpy.da.SearchCursor("TWB_Suburbs_Layer",["ADMINAREA"]) as rows:
for row in rows:
suburbList.append(row[0])
print (row[0])

#get the number of selected land parcels
numberSuburbs = len(suburbList)

print(row[0])

# Create Update Cursor to update missing LOCALITY fields in property layer
for parcel in range (0, numberSuburbs):
with arcpy.da.UpdateCursor("TWB_Property_Layer", "LOCALITY") as initialRows:
for initialRow, rowTwo in initialRows:
print(initialRow)
print(rowTwo[0])
rowTwo[0] = row[0]
initialRows.updateRow(initialRow)

# Print number of fields updated for each suburb
print ('Suburb, Number of updated properties' .format(row[0], row[1]))
print ("{row}" + str(numberSuburbs) +
.format(row[0], row[1]))

#report success message
arcpy.AddMessage("Well done!")








share































    0















    I am writing a script assigning the ADMINAREA value to the empty LOCALITY fields from TWB_Suburbs to TWB_Property layer. I am getting:




    ValueError: need more than 1 value to unpack




    Is anyone able to help out?



    import arcpy
    # set overwrite true so that if data already exists it overwrite
    arcpy.env.OVERWRITE = True
    arcpy.env.overwriteOutput = True

    # make query for empty LOCALITY values
    query = '"LOCALITY" = ' ''

    # assign workspace
    arcpy.env.workspace = "C:Usersdata"

    # make feature layer from property shape file, apply empty locality values query
    arcpy.MakeFeatureLayer_management("TWB_Property.shp", "TWB_Property_Layer", query)

    # make feature layer for suburbs shape file
    arcpy.MakeFeatureLayer_management("TWB_Suburbs.shp", "TWB_Suburbs_Layer")

    # Select empty properties in Properties layer WITHIN Suburbs layer
    arcpy.SelectLayerByLocation_management ("TWB_Property_Layer", "WITHIN", "TWB_Suburbs_Layer")

    #create empty list
    suburbList = []

    # iterate over admin layer field values, to get it's value
    with arcpy.da.SearchCursor("TWB_Suburbs_Layer",["ADMINAREA"]) as rows:
    for row in rows:
    suburbList.append(row[0])
    print (row[0])

    #get the number of selected land parcels
    numberSuburbs = len(suburbList)

    print(row[0])

    # Create Update Cursor to update missing LOCALITY fields in property layer
    for parcel in range (0, numberSuburbs):
    with arcpy.da.UpdateCursor("TWB_Property_Layer", "LOCALITY") as initialRows:
    for initialRow, rowTwo in initialRows:
    print(initialRow)
    print(rowTwo[0])
    rowTwo[0] = row[0]
    initialRows.updateRow(initialRow)

    # Print number of fields updated for each suburb
    print ('Suburb, Number of updated properties' .format(row[0], row[1]))
    print ("{row}" + str(numberSuburbs) +
    .format(row[0], row[1]))

    #report success message
    arcpy.AddMessage("Well done!")








    share



























      0












      0








      0








      I am writing a script assigning the ADMINAREA value to the empty LOCALITY fields from TWB_Suburbs to TWB_Property layer. I am getting:




      ValueError: need more than 1 value to unpack




      Is anyone able to help out?



      import arcpy
      # set overwrite true so that if data already exists it overwrite
      arcpy.env.OVERWRITE = True
      arcpy.env.overwriteOutput = True

      # make query for empty LOCALITY values
      query = '"LOCALITY" = ' ''

      # assign workspace
      arcpy.env.workspace = "C:Usersdata"

      # make feature layer from property shape file, apply empty locality values query
      arcpy.MakeFeatureLayer_management("TWB_Property.shp", "TWB_Property_Layer", query)

      # make feature layer for suburbs shape file
      arcpy.MakeFeatureLayer_management("TWB_Suburbs.shp", "TWB_Suburbs_Layer")

      # Select empty properties in Properties layer WITHIN Suburbs layer
      arcpy.SelectLayerByLocation_management ("TWB_Property_Layer", "WITHIN", "TWB_Suburbs_Layer")

      #create empty list
      suburbList = []

      # iterate over admin layer field values, to get it's value
      with arcpy.da.SearchCursor("TWB_Suburbs_Layer",["ADMINAREA"]) as rows:
      for row in rows:
      suburbList.append(row[0])
      print (row[0])

      #get the number of selected land parcels
      numberSuburbs = len(suburbList)

      print(row[0])

      # Create Update Cursor to update missing LOCALITY fields in property layer
      for parcel in range (0, numberSuburbs):
      with arcpy.da.UpdateCursor("TWB_Property_Layer", "LOCALITY") as initialRows:
      for initialRow, rowTwo in initialRows:
      print(initialRow)
      print(rowTwo[0])
      rowTwo[0] = row[0]
      initialRows.updateRow(initialRow)

      # Print number of fields updated for each suburb
      print ('Suburb, Number of updated properties' .format(row[0], row[1]))
      print ("{row}" + str(numberSuburbs) +
      .format(row[0], row[1]))

      #report success message
      arcpy.AddMessage("Well done!")








      share
















      I am writing a script assigning the ADMINAREA value to the empty LOCALITY fields from TWB_Suburbs to TWB_Property layer. I am getting:




      ValueError: need more than 1 value to unpack




      Is anyone able to help out?



      import arcpy
      # set overwrite true so that if data already exists it overwrite
      arcpy.env.OVERWRITE = True
      arcpy.env.overwriteOutput = True

      # make query for empty LOCALITY values
      query = '"LOCALITY" = ' ''

      # assign workspace
      arcpy.env.workspace = "C:Usersdata"

      # make feature layer from property shape file, apply empty locality values query
      arcpy.MakeFeatureLayer_management("TWB_Property.shp", "TWB_Property_Layer", query)

      # make feature layer for suburbs shape file
      arcpy.MakeFeatureLayer_management("TWB_Suburbs.shp", "TWB_Suburbs_Layer")

      # Select empty properties in Properties layer WITHIN Suburbs layer
      arcpy.SelectLayerByLocation_management ("TWB_Property_Layer", "WITHIN", "TWB_Suburbs_Layer")

      #create empty list
      suburbList = []

      # iterate over admin layer field values, to get it's value
      with arcpy.da.SearchCursor("TWB_Suburbs_Layer",["ADMINAREA"]) as rows:
      for row in rows:
      suburbList.append(row[0])
      print (row[0])

      #get the number of selected land parcels
      numberSuburbs = len(suburbList)

      print(row[0])

      # Create Update Cursor to update missing LOCALITY fields in property layer
      for parcel in range (0, numberSuburbs):
      with arcpy.da.UpdateCursor("TWB_Property_Layer", "LOCALITY") as initialRows:
      for initialRow, rowTwo in initialRows:
      print(initialRow)
      print(rowTwo[0])
      rowTwo[0] = row[0]
      initialRows.updateRow(initialRow)

      # Print number of fields updated for each suburb
      print ('Suburb, Number of updated properties' .format(row[0], row[1]))
      print ("{row}" + str(numberSuburbs) +
      .format(row[0], row[1]))

      #report success message
      arcpy.AddMessage("Well done!")






      cursor update





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      edited 1 min ago









      PolyGeo

      53.9k1782246




      53.9k1782246










      asked 9 mins ago









      Alex HunterAlex Hunter

      193




      193






















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