从jupyter笔记本调用不同文件中编写的函数

Question

From a jupyter notebook, I'd like to call a function written in another .ipynb file. The partial answer is given in this thread Reusing code from different IPython notebooks by drevicko . As an example, I'm using plus_one function written in plus_one.ipynb :

def plus_one(x):
    print(x + 1)

Then, in my current notebook, I execute the cell:

%run plus_one.ipynb 3

which gives me no output. My expected output is 4 . How to pass an argument ( 3 ) to this script? Thanks!

Answer 1

From the %run? documentation

This is similar to running at a system prompt python file args , but with the advantage of giving you IPython's tracebacks, and of loading all variables into your interactive namespace for further use

so all the cells from plus_one.ipynb are run and all it's variables are added to the namespace of the calling notebook. This does not call the plus_one method directly (unless it is called in the other notebook), but it defines it in the current namespace, kind of like an import in a regular python script.so from that moment on, you should be able to do plus_one(3) in the calling notebook, and expect 4 as return value