Share variables between different jupyter notebooks

Question

I have two different Jupyter notebooks, running on the same server. What I would like to do is to access some (only a few of them) of the variables of one notebook through the other notebook (I have to compare if the two different versions of the algorithm give the same results, basically). Is there a way to do this?

Thanks

Answer 1

Between 2 jupyter notebook, you can use the %store command.

In the first jupyter notebook:

data = 'string or data-table to pass' %store data del data 

In the second jupyter notebook:

%store -r data data 

You can find more information at here.

Answer 2

If you only need something quick'n dirty, you can use the pickle module to make the data persistent (save it to a file) and then have it picked up by your other notebook. For example:

import pickle  a = ['test value','test value 2','test value 3']  # Choose a file name file_name = "sharedfile"  # Open the file for writing with open(file_name,'wb') as my_file_obj:     pickle.dump(a,my_file_obj)     # The file you have just saved can be opened in a different session # (or iPython notebook) and the contents will be preserved.  # Now select the (same) file to open (e.g. in another notebook) file_name = "sharedfile" # Open the file for reading file_object = open(file_Name,'r')   # load the object from the file into var b b = pickle.load(file_object)    print(b) >>> ['test value','test value 2','test value 3']