save reload plotly

save reload plotly figures with shelve.py

def shelve_multiple(list_of_objects=[],fname=''):
    """ not providing filename, uses default current notebook name but slow ipynbname function
    shelve files are fname.shelf.dir,.data, and .bak(?) 
    copy these files with ipynb files to save restore objects without re-running
    """
    
    import ipynbname
    if fname =='':
        fname=ipynbname.name() #use note book name but way too slow so best to pass filename
    
    d=shelve.open(fname +'.shelf') 
    for i,x in enumerate(list_of_objects):
        d[str(i)]=x
    d.close()
    return (fname)

def load_mulitple_from_shelve(fname):
    loadlist=[]
    d=shelve.open(fname +'.shelf') 
    for i in range (100): #upto 100 objects for now
        if (str(i) in d) : 
            loadlist.append(d[str(i)])
        else: 
            break
        
    return (loadlist)