Stringtemplate With Dict Data

Posted by sky | Tags: Python

There seems to be a bug if the dict has a value of an empty string. 

def test_templateEmpStr():

    import stringtemplate

    st = stringtemplate.StringTemplate("empty:$s$ok")

    st['s'] = '' #None,'' ok

    print str(st)

    st = stringtemplate.StringTemplate("empty:$m.s$ok")

    st['m'] = {'s': ''}

    print str(st) # throw exception!



  File "..\\stringtemplate\\language\\ASTExpr.py", line 276, in getObjectProperty

    value = o[ASTExpr.DEFAULT_MAP_VALUE_NAME]

KeyError: '_default_'

I change the line if not value: to if value is None: to fix this so as to allow an empty string in a dict. 

        if isinstance(o, stringtemplate.Aggregate) or isinstance(o, dict):

	    #sys.stderr.write("[getObjectProperty] o = " + str(o) + '\n')

            try:

                value = o[propertyName]

            except:

                value = None

            if value is None: #if not value: use if value is None instead to fix !?

                # no property defined; if a map in this group

                # then there may be a default value

                value = o[ASTExpr.DEFAULT_MAP_VALUE_NAME]

28 May 2007

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