How to transfer a file between two connected computers in python?

A. Python3

We can use http.server for this. From SO answer here, SimpleHTTPServer is moved to http.server in python3.

python -m http.server

Python2:

I use SimpleHTTPServer for this sometimes:

python -m SimpleHTTPServer

...which would serve the files in the current directory on port 8000. Open your web browser on the other computer and download whatever you want.

To know the IP address of your computer, you can use (in Ubuntu) ifconfig, e.g:

$ ifconfig
enp0s31f6 Link encap:Ethernet  HWaddr xx:xx:xx:xx:xx:xx
          inet addr:10.0.0.3  Bcast:10.0.0.255  Mask:255.255.255.0

In windows it is ipconfig.

Then, in the other computer, you send the browser to: http://10.0.0.3:8000.

B. If you have SSH enabled you could use paramiko to connect and SFTP transfer whatever you want.

Some simplistic example code for the sending side:

if os.path.exists(df):
  with open(df, 'rb') as f:
    packet = f.read(blocksize)

    while packet != '':
      conn.send(packet)

      packet = f.read(blocksize)

Where:

df = 'path/to/data/file'
blocksize = 8192 # or some other size packet you want to transmit.  
                 # Powers of 2 are good.
conn = socket.socket(socket.AF_INET, socket.SOCK_STREAM)

Check out paramiko. It can do scp and sftp.

http://www.lag.net/paramiko/