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Checking field is empty and then adding new row with zeros?
Planned maintenance scheduled April 23, 2019 at 00:00UTC (8:00pm US/Eastern)
Announcing the arrival of Valued Associate #679: Cesar Manara
Unicorn Meta Zoo #1: Why another podcast?ArcPy Insert Cursor not inserting all rows?How to check for empty values in fields of a featureclass?Getting first and second row with ArcPy searchcursor?ArcPy Calculate Null Values to Zero in Multiple FieldsUsing SearchCursor - TypeError: Not a Spatial ReferenceWriting ArcPy UpdateCursor based on row test?Search Cursor Return Field Name If All Rows Contain a ValueUsing ArcPy to ListFields inside SearchCursor?Adding row with default values to new created table with ArcPy?Switching from Nested Search Cursors to Dictionaries
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I created a table with three fields but there are no values in these fields. Here is the screenshot of these fields.
I want to add a new row with zeros for all these three fields. Here is my code.
with arcpy.da.UpdateCursor(selectionname,("OBJECTID","FREQUENCY","SUM_Shape_Area")) as cursor:
for row in cursor:
if row[0] == None:
row[0] = 0
cursor.updateRow(row)
else:
print selectionname + " is not empty"
Selectionname is my table, a parameter defined prior to this part of my code. First, I need to check if these three fields are empty, then adding a new row with zeros if they are empty. After several tries, I still could not add a new row to the table.
arcpy arcgis-pro cursor
edited Apr 11 at 3:39
Vince
14.8k32850
asked Apr 11 at 2:41
ZhenyuZhenyu
234
add a comment |
I created a table with three fields but there are no values in these fields. Here is the screenshot of these fields.
I want to add a new row with zeros for all these three fields. Here is my code.
with arcpy.da.UpdateCursor(selectionname,("OBJECTID","FREQUENCY","SUM_Shape_Area")) as cursor:
for row in cursor:
if row[0] == None:
row[0] = 0
cursor.updateRow(row)
else:
print selectionname + " is not empty"
Selectionname is my table, a parameter defined prior to this part of my code. First, I need to check if these three fields are empty, then adding a new row with zeros if they are empty. After several tries, I still could not add a new row to the table.
arcpy arcgis-pro cursor
edited Apr 11 at 3:39
Vince
14.8k32850
asked Apr 11 at 2:41
ZhenyuZhenyu
234
4
To add a new row you need to be using an InsertCursor.
– PolyGeo♦
Apr 11 at 2:46
add a comment |
I created a table with three fields but there are no values in these fields. Here is the screenshot of these fields.
I want to add a new row with zeros for all these three fields. Here is my code.
with arcpy.da.UpdateCursor(selectionname,("OBJECTID","FREQUENCY","SUM_Shape_Area")) as cursor:
for row in cursor:
if row[0] == None:
row[0] = 0
cursor.updateRow(row)
else:
print selectionname + " is not empty"
Selectionname is my table, a parameter defined prior to this part of my code. First, I need to check if these three fields are empty, then adding a new row with zeros if they are empty. After several tries, I still could not add a new row to the table.
arcpy arcgis-pro cursor
edited Apr 11 at 3:39
Vince
14.8k32850
asked Apr 11 at 2:41
ZhenyuZhenyu
234
I created a table with three fields but there are no values in these fields. Here is the screenshot of these fields.
I want to add a new row with zeros for all these three fields. Here is my code.
with arcpy.da.UpdateCursor(selectionname,("OBJECTID","FREQUENCY","SUM_Shape_Area")) as cursor:
for row in cursor:
if row[0] == None:
row[0] = 0
cursor.updateRow(row)
else:
print selectionname + " is not empty"
Selectionname is my table, a parameter defined prior to this part of my code. First, I need to check if these three fields are empty, then adding a new row with zeros if they are empty. After several tries, I still could not add a new row to the table.
arcpy arcgis-pro cursor
arcpy arcgis-pro cursor
edited Apr 11 at 3:39
Vince
14.8k32850
asked Apr 11 at 2:41
ZhenyuZhenyu
234
edited Apr 11 at 3:39
Vince
14.8k32850
asked Apr 11 at 2:41
ZhenyuZhenyu
234
edited Apr 11 at 3:39
Vince
14.8k32850
edited Apr 11 at 3:39
Vince
14.8k32850
edited Apr 11 at 3:39
Vince
14.8k32850
14.8k32850
asked Apr 11 at 2:41
ZhenyuZhenyu
234
asked Apr 11 at 2:41
ZhenyuZhenyu
234
asked Apr 11 at 2:41
ZhenyuZhenyu
234
234
4
To add a new row you need to be using an InsertCursor.
– PolyGeo♦
Apr 11 at 2:46
add a comment |
4
To add a new row you need to be using an InsertCursor.
– PolyGeo♦
Apr 11 at 2:46
4
4
To add a new row you need to be using an InsertCursor.
– PolyGeo♦
Apr 11 at 2:46
To add a new row you need to be using an InsertCursor.
– PolyGeo♦
Apr 11 at 2:46
add a comment |
1 Answer
1
active
oldest
votes
Use GetCount to check if table is empty and da.InsertCursor to insert a row. I dont think you should try to set objectid, let it be set automatically. If you want your own ID then add another field for it.
import arcpy
table = 'C:data.gdbtable123' #Change
fields = ['freq','sum'] #Change
if int(arcpy.GetCount_management(table).getOutput(0)) == 0:
icur = arcpy.da.InsertCursor(table,fields)
icur.insertRow([0,0])
del icur
answered Apr 11 at 5:42
BERABERA
17.2k62044
1
this is what I want and really appreciate your help! @BERA
– Zhenyu
Apr 11 at 19:43
add a comment |
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1 Answer
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1 Answer
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votes
Use GetCount to check if table is empty and da.InsertCursor to insert a row. I dont think you should try to set objectid, let it be set automatically. If you want your own ID then add another field for it.
import arcpy
table = 'C:data.gdbtable123' #Change
fields = ['freq','sum'] #Change
if int(arcpy.GetCount_management(table).getOutput(0)) == 0:
icur = arcpy.da.InsertCursor(table,fields)
icur.insertRow([0,0])
del icur
answered Apr 11 at 5:42
BERABERA
17.2k62044
1
this is what I want and really appreciate your help! @BERA
– Zhenyu
Apr 11 at 19:43
add a comment |
Use GetCount to check if table is empty and da.InsertCursor to insert a row. I dont think you should try to set objectid, let it be set automatically. If you want your own ID then add another field for it.
import arcpy
table = 'C:data.gdbtable123' #Change
fields = ['freq','sum'] #Change
if int(arcpy.GetCount_management(table).getOutput(0)) == 0:
icur = arcpy.da.InsertCursor(table,fields)
icur.insertRow([0,0])
del icur
answered Apr 11 at 5:42
BERABERA
17.2k62044
1
this is what I want and really appreciate your help! @BERA
– Zhenyu
Apr 11 at 19:43
add a comment |
Use GetCount to check if table is empty and da.InsertCursor to insert a row. I dont think you should try to set objectid, let it be set automatically. If you want your own ID then add another field for it.
import arcpy
table = 'C:data.gdbtable123' #Change
fields = ['freq','sum'] #Change
if int(arcpy.GetCount_management(table).getOutput(0)) == 0:
icur = arcpy.da.InsertCursor(table,fields)
icur.insertRow([0,0])
del icur
answered Apr 11 at 5:42
BERABERA
17.2k62044
Use GetCount to check if table is empty and da.InsertCursor to insert a row. I dont think you should try to set objectid, let it be set automatically. If you want your own ID then add another field for it.
import arcpy
table = 'C:data.gdbtable123' #Change
fields = ['freq','sum'] #Change
if int(arcpy.GetCount_management(table).getOutput(0)) == 0:
icur = arcpy.da.InsertCursor(table,fields)
icur.insertRow([0,0])
del icur
answered Apr 11 at 5:42
BERABERA
17.2k62044
edited Apr 12 at 5:23
answered Apr 11 at 5:42
BERABERA
17.2k62044
answered Apr 11 at 5:42
BERABERA
17.2k62044
answered Apr 11 at 5:42
BERABERA
17.2k62044
17.2k62044
1
this is what I want and really appreciate your help! @BERA
– Zhenyu
Apr 11 at 19:43
add a comment |
1
this is what I want and really appreciate your help! @BERA
– Zhenyu
Apr 11 at 19:43
1
1
this is what I want and really appreciate your help! @BERA
– Zhenyu
Apr 11 at 19:43
this is what I want and really appreciate your help! @BERA
– Zhenyu
Apr 11 at 19:43
add a comment |
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4
To add a new row you need to be using an InsertCursor.
– PolyGeo♦
Apr 11 at 2:46