def write(self):
        """ Writes a single frame of the progress spinner to the terminal.
            This function updates the current frame before returning.
        """
        if self.text is None:
            # Text has not been sent through the pipe yet.
            # Do not write anything until it is set to non-None value.
            return None
        if self._last_text == self.text:
            char_delay = 0
        else:
            char_delay = self.char_delay
            self._last_text = self.text
        with self.lock:
            ctl = Control().move_column(1).pos_save().erase_line()
            if char_delay == 0:
                ctl.text(str(self)).write(file=self.file)
            else:
                self.write_char_delay(ctl, char_delay)
            ctl.delay(self.delay)
        return None
def write ( self ) : if self . text is None : return None if self . _last_text == self . text : char_delay = 0 else : char_delay = self . char_delay self . _last_text = self . text with self . lock : ctl = Control ( ) . move_column ( 1 ) . pos_save ( ) . erase_line ( ) if char_delay == 0 : ctl . text ( str ( self ) ) . write ( file = self . file ) else : self . write_char_delay ( ctl , char_delay ) ctl . delay ( self . delay ) return None
Writes a single frame of the progress spinner to the terminal.
            This function updates the current frame before returning.