Python Calculator with GUI | PySimpleGUI | Texas Instruments DataMath II

In this video, learn how to build a Python Calculator with GUI using the PySimpleGUI library. To add some style, I modeled this after the Texas Instruments DataMath II, which was manufactured around 1975. This is a great project to flex your GUI skills if you're just getting started, and also provides a challenge on the calculator functionality.

In this video:
0:00 | overview
0:52 | required libraries
1:18 | digital 7 font (link)
1:38 | design elements
2:00 | the layout
2:41 | code view of layout
3:03 | sharing common attributes
3:36 | notes on default settings
4:19 | the window element
4:33 | the event loop
5:35 | using callbacks
5:51 | updating the display
6:30 | my approach to the calc functions

[JZ]

As a mechanical engineer, a lot of concepts like "event loop" are missing a name for me. Until watching this video. This is super high quality stuff. Thank you.

[nipunasudha]

*This is what super high quality, well planned teaching looks like.* Thanks a bunch!

[hchattaway]

this explained a number of PySimpleGUI concepts in 8 minutes that I didn't get anywhere else! Just starting to learn this library and this was an incredibly well thought out approach! Thanks!

[joshuakim]

Hey bro, your videos are such high quality and so well thought out. Your quality is definitely noticeable, and I have no doubt it would have taken a lot of effort to do all this. It's a bummer to see that you stopped making videos. Overall, thank you so much for all the videos you've made :)

[drainis]

That was so pleasing to listen to and look at. It was short and sweet, and it really laid it all out there for me to go in and tinker/replicate it myself

[kmcg]

Thanks so much. I'm working on a project and ended the day struggling to find out how to arrange my buttons in rows instead of the default columns. Watched your video and then bam! Rows.

[PySimpleGUI]

LOVE the animations! This is fantastic!!

[ivanfedorov]

Hi there, this video is pretty awesome. My English is bad but I almost completely understood, thanks a lot

[worldmusiclyrics]

Thank you so much... Keep doing please!!!!

[DevAprender]

Bro the way you laid this out is awesome! I love this tutorial!
The animations are incredible! What program did you use to make these animations! I'd love to know!

[brockk]

This is really well done. Hope you make more.

[jaimerojas]

great video and thanks a lot it was very straightforward

[claudiotonci]

Thanks for your usefull job, Q: every element has no index, but if i wish change p.ex. the color of a button when pushed, if i have 5 or 10 buttons, how can i address each ones? thanks a lot.

[snagjulee]

Thank you. I'm looking good.
Is it possible to customize with the round(circle) button in PySimpleGUI?

[JimPageGD]

For those who cant access pip try
py -m pip install

[cloaker]

Just curious; what code editor are you using?

[Artsy__]

Hlw sir I want code source of this calculator can u plz share this

[vactum]

how to install in windows? any setup.exe?

[gotas.de.terror]

import PySimpleGUI as sg

sg.popup_ok('Atenção!',
'Não utilizar pontos e vírgulas nos valores recebidos, não deixar valores em branco, pagamento não recebido colocar 0 (zero) !')

sg.theme('DarkAmber') # Add a touch of color

# All the stuff inside your window.
layout = ([sg.Text('Total recebido em Dinheiro:'), sg.Input(size=(7, 1), key=('valor0'))],
[sg.Text('Total recebido no Débito:'), sg.Input(size=(7, 1), key=('valor'))],
[sg.Text('Total recebido no Crédito a vista:'), sg.Input(size=(7, 1), key=('valor1'))],
[sg.Text('Total recebido Crédito até 6x:'), sg.Input(size=(7, 1), key=('valor2'))],
[sg.Text('Total recebido Crédito de 7x até 12x:'), sg.Input(size=(7, 1), key=('valor3'))],
[sg.Text('VALORES CARTÃO ELO', background_color='Black', justification='center4')],
[sg.Text('Total recebido Débito Elo:'), sg.Input(size=(7, 1), key=('valor4'))],
[sg.Text('Total recebido Crédito a vista Elo:'), sg.Input(size=(7, 1), key=('valor5'))],
[sg.Text('Total recebido Crédito Elo até 6x:'), sg.Input(size=(7, 1), key=('valor6'))],
[sg.Text('Total recebido Crédito Elo de 7x até 12x:'), sg.Input(size=(7, 1), key=('valor7'))],
[sg.Output(size=(80, 20))],
[sg.Button('Calcular'), sg.Button('Cancel')])

# Create the Window
window = sg.Window('Calculador porcentagem do Dentista', layout)

# Event Loop to process "events" and get the "values" of the inputs
while True:
event, values = window.read()
if event == sg.WIN_CLOSED or event == 'Cancel': # if user closes window or clicks cancel
break

# Aqui é feito o cálculo da porcentagem da maquininha a ser descontada do valor total
if event == 'Calcular':
values['valor0'] = float
values['valor'] = float
values['valor1'] = float
values['valor2'] = float
values['valor3'] = float
values['valor4'] = float
values['valor5'] = float
values['valor6'] = float
values['valor7'] = float
porcent = values['valor'] * 0.0178
porcent1 = values['valor1'] * 0.0294
porcent2 = values['valor2'] * 0.0350
porcent3 = values['valor3'] * 0.0370
porcent4 = values['valor4'] * 0.0304
porcent5 = values['valor5'] * 0.0409
porcent6 = values['valor6'] * 0.0462
porcent7 = values['valor7'] * 0.0509
desco = values['valor'] - porcent # Aqui é feito o desconto da taxa da maquininha do valor total
desco1 = values['valor1'] - porcent1
desco2 = values['valor2'] - porcent2
desco3 = values['valor3'] - porcent3
desco4 = values['valor4'] - porcent4
desco5 = values['valor5'] - porcent5
desco6 = values['valor6'] - porcent6
desco7 = values['valor7'] - porcent7
liq0 = values['valor0'] * 0.35 # Aqui é feito os 35% a ser repassado para o dentista do valor com a taxa da maquininha descontada
liq = desco * 0.35
liq1 = desco1 * 0.35
liq2 = desco2 * 0.35
liq3 = desco3 * 0.35
liq4 = desco4 * 0.35
liq5 = desco5 * 0.35
liq6 = desco6 * 0.35
liq7 = desco7 * 0.35
print('Valor liquido a receber é', liq0 + liq + liq1 + liq2 + liq3 + liq4 + liq5 + liq6 + liq7) # Aqui imprimi na tela o valor total dos 35% a ser repassado ao dentista de todos os pagamentos

window.close()
#Not working... it didn't do the calculation, what is wrong with it please?

[divyanshu]

Please say I hindi
Hindi me bol bhai....