Jonathan Bowlas wrote: > Hi Listers, > > I have a requirement to test for a data type could someone tell me if this > is possible in python? > > Basically I have a ZPT in Zope that users can select checkboxes in a form > which pass arguments for a python function, however if there is only one > checkbox selected it is passed as a string whereas more than one checkbox is > passed as a list. Therefore if my function is required to perform an action > based on each argument passed in the list the function works correctly but > if it is passed as a string nothing happens.
You need the isinstance() function. For example you can use isinstance(selecteddeptcodes, list) to test if your variable is a list. If you want to test the other way round use isinstance(selecteddeptcodes, str) if your variable is a string, isinstance(selecteddeptcodes, unicode) if it's a unicode string or isinstance(selecteddeptcodes, basestring) to test if it's a string or unicode string. Read more about this function and the types to test for in http://docs.python.org/lib/built-in-funcs.html. If you already have the code for a list argument I'd check if it's not a list and then turn it into a list: if not isintance(selecteddeptcodes, list): selecteddeptcodes = [selecteddeptcodes] Bye, Dennis -- http://mail.python.org/mailman/listinfo/python-list
