environment/lib/python2.7/site-packages/IPython/external/pexpect/_pexpect.py
def send(self, s):

        """This sends a string to the child process. This returns the number of
        bytes written. If a log file was set then the data is also written to
        the log. """

        time.sleep(self.delaybeforesend)
        
        s2 = self._cast_buffer_type(s)
        if self.logfile is not None:
            self.logfile.write(s2)
            self.logfile.flush()
        if self.logfile_send is not None:
            self.logfile_send.write(s2)
            self.logfile_send.flush()
        c = os.write (self.child_fd, _cast_bytes(s, self.encoding))
        return c
def send(self, s):

        """This sends a string to the child process. This returns the number of
        bytes written. If a log file was set then the data is also written to
        the log. """

        time.sleep(self.delaybeforesend)
        
        s2 = self._cast_buffer_type(s)
        if self.logfile is not None:
            self.logfile.write(s2)
            self.logfile.flush()
        if self.logfile_send is not None:
            self.logfile_send.write(s2)
            self.logfile_send.flush()
        c = os.write (self.child_fd, _cast_bytes(s, self.encoding))
        return c
This sends a string to the child process. This returns the number of
        bytes written. If a log file was set then the data is also written to
        the log.