dbfpy - cannot store new record

[MRAB]

Laszlo Nagy wrote:
> Here is the next problem. For boolean/logical fields, I can set their 
> value to True/False easily. However, setting NULL seems impossible:
> 
> rec = tbl.newRecord()
> rec["SOMEFIELD1"] = True # Works fine
> rec["SOMEFIELD2"] = False # Works fine
> rec["SOMEFIELD3"] = None # Will store False
> rec["SOMEFIELD3"] = 0 # Will store False
> rec["SOMEFIELD3"] = "" # Will store False
> rec["SOMEFIELD3"] = chr(32) # Will store False
> rec["SOMEFIELD3"] = chr(0) # Will store False
> rec.store()
> 
> Strange thing: if I do not set the value of a numeric field, it becomes 
> NULL. The same thing I cannot do for logical fields: if I do not set the 
> value of a logical field, it becomes an invalid value, denoted with a 
> question mark.
> 
Have you tried -1?

Can you read a DBF file created by the application (dBase, or whatever)
and see what it uses?