def single_case(self, i, case):
        """Uppercase or lowercase the next character."""

        # Pop a previous case if we have consecutive ones.
        if self.single_stack:
            self.single_stack.pop()
        self.single_stack.append(case)
        try:
            t = next(i)
            if self.use_format and t in _CURLY_BRACKETS:
                self.handle_format(t, i)
            elif t == '\\':
                try:
                    t = next(i)
                    self.reference(t, i)
                except StopIteration:
                    self.result.append(t)
                    raise
            elif self.single_stack:
                self.result.append(self.convert_case(t, self.get_single_stack()))
        except StopIteration:
            pass
def single_case ( self , i , case ) : if self . single_stack : self . single_stack . pop ( ) self . single_stack . append ( case ) try : t = next ( i ) if self . use_format and t in _CURLY_BRACKETS : self . handle_format ( t , i ) elif t == '\\' : try : t = next ( i ) self . reference ( t , i ) except StopIteration : self . result . append ( t ) raise elif self . single_stack : self . result . append ( self . convert_case ( t , self . get_single_stack ( ) ) ) except StopIteration : pass
Uppercase or lowercase the next character.