[Python] Python socket-module: How to change the local port on the client side?

I want to get packages from a network using TCP/IP as a client.

With ...

connect((TCP_IP, TCP_PORT))


... I can change the port of the peer address. But can I change the port of my local computer?

EDIT: I want to use a network card with four ports. The network card is connected to a measurement device that sends a lot of data. How can I see where the data goes? How can I distinguish between these four ports?

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