Add Table View to Data View in ArcMap gives Assertion Error

Question

I'm trying to create a Python AddIn for ArcMap 10.6 and the first process of the tool will be to add a tableview to a map document. At this point I just want python code to bring up rows from a table specified by a where clause when creating the table view so you can see this tableview in the data view display of the map document.

Here's my code so far:

import arcpy
# construct where clause
val = "\'%2%\'"
f1 = "DIST_NAME"
WC = """{} LIKE {}""".format(f1, val)
# create tableview
cList = arcpy.MakeTableView_management("CensusTract", "cList", WC)
# add tableview to dataframe
mxd = arcpy.mapping.MapDocument(r"C:\TableView.mxd")
df = arcpy.mapping.ListDataFrames(mxd)[0]
arcpy.mapping.AddTableView(df, cList)

And here is the error that I'm getting:

Runtime error 
Traceback (most recent call last):
 File "<string>", line 1, in <module>
 File "c:\program files (x86)\arcgis\desktop10.6\arcpy\arcpy\utils.py", line 182, in fn_
 return fn(*args, **kw)
 File "c:\program files (x86)\arcgis\desktop10.6\arcpy\arcpy\mapping.py", line 114, in AddTableView
 assert isinstance(add_table, TableView)
AssertionError

• NULL.Dude: it looks like you're just assigning the actual arcpy.maketableview to a variable you're not executing the function so it cant add the table view if it doesn't exist.
• Bera: I agree, cList is probably a result object. Try changing arcpy.mapping.AddTableView(df, cList) to the actual layer name: arcpy.mapping.AddTableView(df, "cList")
• geoJshaun: @BERA I changed the code as you suggested but I'm still getting the same error.

Answer 1

Instead of:

# create tableview
cList = arcpy.MakeTableView_management("CensusTract", "cList", WC)
# add tableview to dataframe
mxd = arcpy.mapping.MapDocument(r"C:\TableView.mxd")
df = arcpy.mapping.ListDataFrames(mxd)[0]
arcpy.mapping.AddTableView(df, cList)

try this:

# create tableview
tblView = arcpy.mapping.TableView("CensusTract")
# add tableview to dataframe
mxd = arcpy.mapping.MapDocument(r"C:\TableView.mxd")
df = arcpy.mapping.ListDataFrames(mxd)[0]
arcpy.mapping.AddTableView(df,tblView)

I used the AddTableView help to come up with the above untested code.