I am trying to repeat the behavior of this code from the ESRI website.
I want to replicate the output example in
ALL_Type field, so that it concatenates a field but it deals (ignores) any that have NULL values.
Unfortunately this example no longer works at 10.2.2 because all example of NULL return a "None" text. Instead I just want a blank to show.
And here is the code.
"*args" allows this routine to accept any number of field values. # the values are passed as a Python tuple, essentially a # non-editable list # def concat(*args): # Initialize the return value to an empty string, # then set the separator character # retval = "" sep = "_" # For each value passed in... # for t in args: # Convert to a string (this catches any numbers), # then remove leading and trailing blanks # s = str(t).strip() # Add the field value to the return value, using the separator # defined above # if s <> '': retval += sep + s # Strip of any leading separators before returning the value # return retval.lstrip(sep)
if s <> '' and s is not None:
if t is not None:before it converts t to a string
s = str(t).strip()--- or
if s <>'' and s <> 'None':