spawn refers to the generation process of the pty module and connects its control terminal to the current process standard IO;Popen refers to the generation child process method of the subprocess module. So what"s the difference between the two? From an operating system point of view?
studied the source code and found that spawn reads / writes data by directly binding the three standard IO of the child process to the slave end of the pseudo terminal, and has nothing to do with other data sharing methods such as pipes. I hope it can be of some help to all of you who are in need.
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