searching a pandas dataframe using PySimpleGUI - pandas

Question

How do I update my list box using pysimple gui as below
so the user input is AP and the list box suggests "APPLE"
the issue as I see it is describing the updated listbox as the user is inputting with respect to the pandas dataframe
import PySimpleGUI as sg
import pandas as pd
sg.theme('Default1')
pd.set_option('display.max_rows',None)
formulation =pd.read_csv('FORMULATIONS.csv')
names=formulation["PRODUCT"]
#names=product.values.tolist()
#names=formulation["PRODUCT"].to_string
#left side search
left_col=[[sg.Text('SEARCH')],
[sg.Input(size=(20,1),enable_events=True,key='-INPUT-',do_not_clear=True)],
[sg.Listbox(names,size=(50,len(names)),key='-LIST-',enable_events=True)]]
#right side batch sheet
right_col=[[sg.Text('Product : \n \n ITEM | RAW MATERIAL |')],
[sg.Text(size=(40,1),key='-TOUT-')]]
#together
layout=[[sg.Column(left_col,element_justification='c'),sg.VSeperator(),sg.Column(right_col)]]
#create window
window =sg.Window('BF-2.1',layout,resizable=True)
#event loop
while True:
event, values =window.Read()
if event in (sg.WIN_CLOSED,'Exit'):
break
if values['-INPUT-'] != '' :
search =values['-INPUT-']
new_values=[formulation["PRODUCT"]==['-INPUT-']] #how to use the input to navigate
window.Element('-LIST-').Update(new_values)
else:
window.Element('-LIST-').Update(names)
if event =='-LIST-' and len(values['-LIST-']):
sg.popup('Selected',values['-LIST-'])
window.close()
have tried
new_values=[x for x in names if search in x]

Answer 1

Use df.loc[df["PRODUCT"]==text]["KIND"] to get items which matched the text.
Following code demo how to get event from Input element to filtered the DataFrame to update the List element. Try to input 'car', 'motorcycleorship` to get the List element updated, or empty the List element to get all.
import pandas as pd
import PySimpleGUI as sg
data = [
["car", item] for item in ('SUV', 'Hatchback', 'Crossover', 'Convertible', 'Sedan', 'Sports Car', 'Coupe', 'Minivan', 'Station Wagon', 'Pichup Truck')] + [
["motorcycle", item] for item in ('standard', 'cruiser', 'touring', 'sports', 'off-road', 'dual-purpose')] + [
["ship", item] for item in ('Container', 'Bulk Carrier', 'Tanker', 'Passenger', 'Naval', 'Offshore', 'Special Purpose')]
df = pd.DataFrame(data, columns=["PRODUCT", "KIND"])
left_col=[
[sg.Text('SEARCH')],
[sg.Input(size=20, enable_events=True, key='-INPUT-')],
[sg.Listbox(df["KIND"], size=(50, 10), key='-LIST-', enable_events=True)],
]
right_col=[
[sg.Text('Product : \n \n ITEM | RAW MATERIAL |')],
[sg.Text(size=40, key='-TOUT-')],
]
layout=[
[sg.Column(left_col,element_justification='c'),
sg.VSeperator(),
sg.Column(right_col)],
]
window = sg.Window('BF-2.1', layout, resizable=True)
while True:
event, values = window.read()
if event == sg.WIN_CLOSED:
break
if event == '-INPUT-':
if values[event]:
text = values['-INPUT-'].lower()
new_values= df.loc[df["PRODUCT"]==text]["KIND"]
window['-LIST-'].update(new_values)
else:
new_values = df["KIND"]
window['-LIST-'].update(new_values)
if event =='-LIST-' and len(values['-LIST-']):
sg.popup('Selected', values['-LIST-'])
window.close()