A limited account with one web app at your-username.pythonanywhere.com, restricted outbound Internet access from your apps, low CPU/bandwidth, no IPython/Jupyter notebook support.
It works and it's a great way to get started!
I just need to test some Python code and get data file read
f = open(“myfile.txt”, “x”)
Traceback (most recent call last):
File “”, line 1, in
PermissionError: [Errno 13] Permission denied: ‘myfile.txt’
Matplotlib created a temporary config/cache directory at /tmp/matplotlib-flajz3hz because the default path (/config/matplotlib) is not a writable directory; it is highly recommended to set the MPLCONFIGDIR environment variable to a writable directory, in particular to speed up the import of Matplotlib and to better support multiprocessing.
So GUI generally not supported by online Python interpreters