human
Solve the following python programming problem given the following code:
def _Group(self, group) : 
    def _FormattedGroup(el) : 
        if isinstance (el, str) : 
            return el.lower () 
else : 
            if isinstance (el, int) : 
                return str (el) 
else : 
                if (el [0] == el [1]) : 
                    return ('%d' % el [0]) 
else : 
                    return ('%d-%d' % (el [0], el [1])) 
if (len (group) > 1) : 
        rval = '' 
        for item in group : 
            rval = ((rval + str (item [0])) + ' ') 
else : 
        rval = _FormattedGroup (rval [0]) 
return rval 

    
    

    Fix the buggy line: rval = _FormattedGroup (rval [0])
assistant
#Here is Python program to fix the buggy line: rval = _FormattedGroup (rval [0])
.

rval = _FormattedGroup (group [0])