Your first Run

Below is a live code editor. Press Run and watch it work.

The very first time you run Python, your browser downloads the Python engine and the pandas library. This is a one time download of around twenty megabytes. After that it is saved, and every run is instant, even offline. On a slow connection the first run can take a minute, so be patient once, then it is fast forever.

If you see a version number, you are ready to go.

Practice

Press Run above and wait for the first download to finish. Then change the message in the last line to include your own name, and Run again. Notice the second run is instant.