'import a function from another .ipynb file
I defined a hello world function in a file called 'functions.ipynb'. Now, I would like to import functions in another file by using "import functions". I am sure that they are in the same folder. However, it still shows that "ImportError: No module named functions". By the way, I am using jupyter notebook. Thanks a lot!
Solution 1:[1]
You'll want to use the ipynb package/module importer. You'll need to install it: pip install ipynb
.
Create a Notebook named my_functions.ipynb
. Add a simple function to it.
def factorial(n):
if n == 0:
return 1
else:
return n * factorial(n-1)
Then, create a second IPython Notebook and import this function with:
from ipynb.fs.full.my_functions import factorial
Then you can use it as if it was in the same IPython Notebook:
testing = factorial(5)
See the documentation for more details.
Solution 2:[2]
For my use case the ipnyb import didn't work for some reason. I had to use Jupyter Notebook magic cell to import my function.:
%run MyOtherNotebook.ipynb #this is were my function was stored
function(df) #then simply run the function
Solution 3:[3]
You can save functions.ipynb as functions.py and can import the file as import functions
. Now you can use any function defined in the functions file as functions.function_name
For eg, if add is a function,
functions.add(5,3)
after importing will work.
Solution 4:[4]
@David Rinck's answer solved the problem, but I'd like to recommend you add the boilerplate __name__ == "__main__"
to guard the scripts you don't want to accidentally invoke. It works the same way as in a usual Python file.
If a .ipynb file a.ipynb is imported by another one b.ipynb
from ipynb.fs.full.a import factorial
the __name__
in a.ipynb would be ipynb.fs.full.a
rather than "__main__"
.
Sources
This article follows the attribution requirements of Stack Overflow and is licensed under CC BY-SA 3.0.
Source: Stack Overflow
Solution | Source |
---|---|
Solution 1 | drhagen |
Solution 2 | |
Solution 3 | Zoi |
Solution 4 | Lerner Zhang |