[FIXED] How to capture everything that is printed in a jupyter notebook based on ipython?

Issue

Inside a jupyter notebook based on ipython I have a function that prints something. I can not change this function as it is from a library. Let's take

def print_something():
    print("something")

as an example. When I run print_something() in a cell, I want to save whatever the cell is printing in a file. How do I do that? I tried %save and %logstart, but as print is not creating an output, they don't do what I want.

Solution

Thanks to the comments I have found the answer in another Question:

%%capture cap --no-stderr
print_something()

with open('/path/to/capture.txt') as f:
    f.write(cap.stdout)

Documentation: https://ipython.readthedocs.io/en/stable/interactive/magics.html#cellmagic-capture

Answered By - Niclas von Caprivi