Method _stdin_write

Lib/subprocess.py:1151–1174

(self, input)

        return self._devnull

    def _stdin_write(self, input):
        if input:
            try:
                self.stdin.write(input)
            except BrokenPipeError:
                pass  # communicate() must ignore broken pipe errors.
            except OSError as exc:
                if exc.errno == errno.EINVAL:
                    # bpo-19612, bpo-30418: On Windows, stdin.write() fails
                    # with EINVAL if the child process exited or if the child
                    # process is still running but closed the pipe.
                    pass
                else:
                    raise

        try:
            self.stdin.close()
        except BrokenPipeError:
            pass  # communicate() must ignore broken pipe errors.
        except OSError as exc:
            if exc.errno == errno.EINVAL:
                pass
            else:
                raise

    def communicate(self, input=None, timeout=None):
        """Interact with process: Send data to stdin and close it.