(self, _name, _value)
Replace a header.

        Replace the first matching header found in the message, retaining
        header order and case.  If no matching header was found, a KeyError is
        raised.
Replace a header.
Replace a header .
def replace_header(self, _name, _value):
        """Replace a header.

        Replace the first matching header found in the message, retaining
        header order and case.  If no matching header was found, a KeyError is
        raised.
        """
        _name = _name.lower()
        for i, (k, v) in zip(range(len(self._headers)), self._headers):
            if k.lower() == _name:
                self._headers[i] = self.policy.header_store_parse(k, _value)
                break
        else:
            raise KeyError(_name)
def replace_header ( self , _name , _value ) : _name = _name . lower ( ) for i , ( k , v ) in zip ( range ( len ( self . _headers ) ) , self . _headers ) : if k . lower ( ) == _name : self . _headers [ i ] = self . policy . header_store_parse ( k , _value ) break else : raise KeyError ( _name )