Web Reference: Aug 28, 2016 · The main difference is that subprocess.run() executes a command and waits for it to finish, while with subprocess.Popen you can continue doing your stuff while the process finishes and then just repeatedly call Popen.communicate() yourself to pass and receive data to your process. 1 day ago · Using the subprocess Module ¶ The recommended approach to invoking subprocesses is to use the run() function for all use cases it can handle. For more advanced use cases, the underlying Popen interface can be used directly. While subprocess.run() is ideal for simple, one-off commands, Python’s subprocess.Popen() class offers more flexibility. It is better suited for advanced use cases requiring real-time interaction, streaming data, or handling multiple processes.
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