在Python 3中将转义序列包含在字符串序列中

Question

I am trying to send data to a thermal printer directly.

I have the following test data:

raw_data = bytes ("This is a test", "utf-8")

I would like to include two initial bytes to build the sequence ESC+@ (character ESC is ASCII 27) to initialize the printer.

How shall I do that?

Answer 1

使用\\033表示ESC字符。

raw_data = bytes ("\033@This is a test", "utf-8")