socket.error: [Errno 48] Address already in use

I'm trying to set up a server with python from mac terminal.

I navigate to folder location an use:

    python -m SimpleHTTPServer

But this gives me error:

    socket.error: [Errno 48] Address already in use

I had previously open a connection using the same command for a different website in a different location in my machine.

You already have a process bound to the default port (8000). If you already ran the same module before, it is most likely that process still bound to the port. Try and locate the other process first:

    $ ps -fA | grep python
      501 81651 12648   0  9:53PM ttys000    0:00.16 python -m SimpleHTTPServer

The command arguments are included, so you can spot the one running SimpleHTTPServer if more than one python process is active. You may want to test if http://localhost:8000/ still shows a directory listing for local files.

The second number is the process number; stop the server by sending it a signal:

    kill 81651

This sends a standard SIGTERM signal; if the process is unresponsive you may have to resort to tougher methods like sending a SIGKILL (kill -s KILL <pid> or kill -9 <pid>) signal instead. See Wikipedia for more details.

Alternatively, run the server on a different port, by specifying the alternative port on the command line:

    $ python -m SimpleHTTPServer 8910
    Serving HTTP on 0.0.0.0 port 8910 ...

then access the server as http://localhost:8910; where 8910 can be any number from 1024 and up, provided the port is not already taken.

From: stackoverflow.com/q/19071512

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