autoFill.py

from ipywidgets import *

def autoFill(opts=[''], val='',txt='',placehold='Please type here...',callback=False):
    opts.append('')
    def dropFunc(value):
        if (value.new in opts):
            dropClose()
            if (callable(callback)):
                callback(value) 
        text.value = value.new                
    def dropClose():
        drop.layout.visibility='hidden'
        selDropBox.layout.visibility='hidden'            
        selDropBox.layout.display='none'         
    def textFunc(value):
        matched = False
        if (len(value.new)!=len(value.old)):
            if (len(value.new)>0):
                word = value.new
                out = [word]
                for mystring in opts:
                    if word.lower() in mystring.lower(): 
                        if (mystring.lower()==word.lower()):
                            matched = True
                            final = mystring
                        out.append(mystring)
                if (not matched):
                    drop.layout.visibility='visible'
                    selDropBox.layout.visibility='visible'
                    selDropBox.layout.display='flex'
                    out.append('')
                    drop.options=out 
                else:
                    text.value = final
                    dropClose()                    
            else:
                text.value = ''
                dropClose()

    drop = Select(
                options=opts,
                value=val,
                rows=10,
                description=txt,
                disabled=False,
           )     
    text = Text(
                value=val,
                placeholder=placehold,
                description=txt,
                disabled=False,    
            )         
    drop.observe(dropFunc, names='value')
    text.observe (textFunc,names='value')
    selTextBox = Box([text])
    selDropBox = Box([drop], layout = Layout(display='none', top='-32px', visibility='hidden', flex_flow='column'))
    return (VBox([selTextBox, selDropBox],layout = Layout(display='flex', flex_flow='column')))