Build A Simple Calculator App - Python Tkinter GUI Tutorial #5

[@Codemycom]

▶️ Watch Entire Tkinter Playlist ✅ Subscribe To My KZbin Channel: bit.ly/2UFLKgj bit.ly/2IGzvOR ▶️ See More At: ✅ Join My Facebook Group: Codemy.com bit.ly/2GFmOBz ▶️ Learn to Code at Codemy.com ✅ Buy a Codemy T-Shirt! Take $30 off with coupon code: youtube1 bit.ly/2VC9WUN

[@magiconfire]

yooooooooooooooo plz say hi plz

[@letsarray5712]

17:00 if you error syntax you have to replace Lambda to lambda. The syntax is worked than Lambda

[@Codemycom]

Never use capital L in lambda...I don't use capital L in the video.

[@letsarray5712]

@@Codemycom yeah but i look it's large L :d

[@Codemycom]

@@letsarray5712 so? the size of it doesn't matter at all, do it in the same way I showed in the video

[@letsarray5712]

@@Codemycom Oke fine that's not the big problem to me 😂

[@tiffles699]

Thank you, due to the font it looks like its "L" instead of "l", I made that mistake (if using idle, lambda turns orange, Lambda does not)

[@timmyroust]

Great teaching ! This playlist is paced so well. I've been going in circles trying to get started with Tkinter till now. This gave me a confidence boost ! Thank you!

[@Codemycom]

Happy to hear it!

[@IceTheCoder]

Please continue to make videos, you are truly a great creator and help so many people like me learn to code

[@Codemycom]

I have hundreds of videos on my channel and I create more every week.

[@mrawesome7739]

I think what helps me learn this is making it my own: changing labels, adding more functions or buttons

[@Codemycom]

that's usually the case

[@ponalvsiki2254]

Make a modern casio fx 580 💪

[@dragonhunter2264]

I know this is late but what other type of functions did you add im adding some stuff too but just the division and multiplication wondering if you did anything else?

[@CShand]

Want to see more about making something like this that scales with resizing.

[@LhamoID]

Hello. Its from Bhutan. This video really helped me. Kadrinchey!

[@Codemycom]

Glad to hear it!

[@Another_Look]

17:01 What you want is e.insert("end", number)

[@macdonaldjuma6164]

I enjoy how fun you make your lessons, 😃Thank you

[@Codemycom]

Glad you're enjoying them!

[@musabaltayy6362]

you deserve million LIKE for this chain of videos

[@Codemycom]

I agree, tell your friends! :-p

[@punishertvv]

Thanks sir ... This is so simple ..i understood All the things thankyou ... Love from INDIA

[@Codemycom]

Thanks for watching!

[@wrapdoesstuff7614]

thanks this video was really helpful and entertaing to both code and watch!

[@Codemycom]

Glad it helped!

[@nitinjagga2841]

You Are Very Good Teacher John Elder Please Make A Video On Doing Webscraping Using Python

[@Codemycom]

Thanks :-)

[@umpalumpa2883]

Nice video series and good explanation. Comment to the commentators: I no sometimes there are weird error messages but I think instead of asking here you could try to figure it out by yourself . It might take some time and can be annoying but at the end of the day you like to learn how to code by yourself and then you'll need to find solutions to upcoming issues. Cheers

[@Codemycom]

most of coding is googling errors

[@texxmexxchick]

I do this to some extent. I will try any ideas I have of the top of my head, for me this is about 10 -15 mins of re-writing and testing. Once I feel like I'm out of ideas, then I'll google or ask around.

[@SomeOne-ec9zx]

It's a wow what you are doing........keep going

[@adarsht6266]

Yes it's is very nice Please share more videos

[@Codemycom]

I release new videos every day

[@adarsht6266]

@@Codemycom thanks friend interesting for coding

[@Codemycom]

@@adarsht6266 no problem

[@adarsht6266]

Can you connect with us to clarify doubts?

[@Codemycom]

@@adarsht6266 People who purchase membership to my site can ask questions about the videos and I answer them. I don't do consulting outside of my courses tho.

[@mashalmokarar4817]

god bless you men thanks alot ❤❤❤

[@Codemycom]

thanks

[@abdolrezamohseni9787]

Awesome. Great teaching. Is there any chance to have access to the written codes for each of the video?

[@Codemycom]

github.com/flatplanet/Intro-To-TKinter-KZbin-Course

[@rodrigopharazz]

Thank You🙏

[@Codemycom]

Welcome!

[@kunxu5612]

this is also exactly what I demand. thanks.

[@Codemycom]

Glad you liked it!

[@beast6092]

num1 = input("Type in the first number: ") num2 = input("Type in the second number: ") result = float(num1) + float(num2) print(result)

[@Codemycom]

That won't work in tkinter

[@beast6092]

@@Codemycom Yeah, just realized it... it works in Python tho

[@Algeriawindows69]

thats a console application

[@whitedinamo]

Lesson check. Thanks.

[@Codemycom]

Thanks

[@OrlandoGabriel2010]

Great work

[@Codemycom]

Thanks!

[@gpecs]

Nice tutorials. Instead of running the code everytime, is there a way TK gui can automatic reload after saving in vscode?

[@Codemycom]

no

[@ansh4786]

It would be helpful for us if you write the script in the description too. But I like your videos.

[@Codemycom]

The code is here: github.com/flatplanet/Intro-To-TKinter-KZbin-Course

[@محمدزهران-ك3ط]

you are a great man

[@Codemycom]

Thanks!

[@rexsoosan303]

from tkinter import * import math root= Tk() root.title("Simple Calc") e=Entry(root,width=40,borderwidth=5).grid(row=0,column=0,columnspan=4,padx=30,pady=10) def Button_click(number): e.delete(0,tk.END) e.insert(0,number) #defining Buttons button1= Button(root,text="1",padx=30,pady=30,command=lambda: Button_click(1)).grid(row=4,column=0) button2= Button(root,text="2",padx=30,pady=30,command=lambda: Button_click(2)).grid(row=4,column=1) button3= Button(root,text="3",padx=30,pady=30,command=lambda: Button_click(3)).grid(row=4,column=2) button4= Button(root,text="4",padx=30,pady=30,command=lambda: Button_click(4)).grid(row=5,column=0) button5= Button(root,text="5",padx=30,pady=30,command=lambda: Button_click(5)).grid(row=5,column=1) button6= Button(root,text="6",padx=30,pady=30,command=lambda: Button_click(6)).grid(row=5,column=2) button7= Button(root,text="7",padx=30,pady=30,command=lambda: Button_click(7)).grid(row=6,column=0) button8= Button(root,text="8",padx=30,pady=30,command=lambda: Button_click(8)).grid(row=6,column=1) button9= Button(root,text="9",padx=30,pady=30,command=lambda: Button_click(9)).grid(row=6,column=2) button10= Button(root,text="+",padx=30,pady=30,command=lambda: Button_click()).grid(row=4,column=3) button11= Button(root,text="-",padx=30,pady=30,command=lambda: Button_click()).grid(row=5,column=3) button12= Button(root,text="*",padx=30,pady=30,command=lambda: Button_click()).grid(row=5,column=4) button13= Button(root,text="/",padx=30,pady=30,command=lambda: Button_click()).grid(row=4,column=4) button14= Button(root,text="0",padx=30,pady=30,command=lambda: Button_click(0)).grid(row=6,column=3) button15= Button(root,text=".",padx=30,pady=30,command=lambda: Button_click()).grid(row=6,column=4) button16= Button(root,text="Enter",padx=60,pady=20,command=lambda: Button_click()).grid(row=7,column=0,columnspan=2) button17= Button(root,text="Clear",padx=60,pady=20,command=lambda: Button_click()).grid(row=7,column=2,columnspan=2) root.mainloop()

[@janlochman1985]

Hey, why you have placed columnspan parameter and applied it on the Entry widget? The other (button) widgets inherit it?

[@Codemycom]

no they don't inherit it. We want the entry widget to span the three columns below that hold the other buttons...that's why.

[@mohammadsakil4050]

Nice video

[@Codemycom]

Thanks!

[@lukipuki4095]

Thanks for the great intro to python. Can't believe my first project worked:) Can you explain how to limit input to the GUI or easily exclude letters and non 'math' symbols from the keyboard please?

[@Codemycom]

I don't have any videos on that

[@abigailhillen-schiller3641]

Hi John, Loving your TKinter tutorials so far. I have a question, though. I wrote this loop to create the buttons for 1-9: for x in range(1,4): y = 10-3*x for z in range(y, y+3): btn = Button(root, text=z, padx=40, pady=20, command=lambda: button_click(z)).grid(row=x, column=z-y) The buttons are rendered fine, but when I click them, they all insert the number 3 into the entry box, regardless of the number on the button. Changing the lambda as below solved the problem, but I don't understand why: lambda q=z: button_click(q) Can you explain it?

[@user-ft4mz3ez1c]

Because you are in a loop and the lambda function you wrote has no variable i it takes the value of the last iteration. In order to fix it write your lambda like this: lambda q=z: button_click(q) which will work because q is a variable of the lambda so it changes every time you call it. Also its more pythonic to create your buttons with a list instaid of having for loops.

[@abigailhillen-schiller3641]

@@user-ft4mz3ez1c Thanks for the explanation! When you say create buttons with a list, do you mean create each button on a separate line, like in the video, or using a [list]?

[@user-ft4mz3ez1c]

​@@abigailhillen-schiller3641 yeah i mean something like this: num_buttons = [Button(root, text=str(i), width=7, borderwidth=4, pady=15, padx=1, font="Calibri 15 bold", command=lambda i=i: symbol_button_pressed(i)).grid(row=str(3 - (i - 1) // 3), column=str((i - 1) % 3)) for i in range(1, 10)]

[@abigailhillen-schiller3641]

Great tip, thanks!

[@hector338]

@@user-ft4mz3ez1c That's some really clever indexing for the rows and columns, thanks for the tip.

[@shukkkursabzaliev1730]

Amazing

[@Codemycom]

Thanks!

[@themadmagic5019]

"its a program, we can build it and that should be cool" ~John

[@Codemycom]

lol

[@johannesberger8641]

Imo a cleaner and (more) pythonic way of defining all the buttons is number_buttons = [ Button( root, text=str(i%10), padx=40, pady=20, command=(lambda j=i : button_click(j%10)) ) for i in range(1, 11)] Then, to put them on the grid for i in range(10): number_buttons[i].grid(row=i//3+1, column=i%3)

[@Codemycom]

whatever floats your boat

[@realityfirst5585]

@@Codemycom Ive been enjoying your videos until I started reading your responses. I have to say they arent very professional, Iike this one above. I hope you have grown to be more understanding in the last 3 yrs!

[@karlobucic4412]

Hello from Croatia - 🇭🇷 First, I just want to say that I love your videos. I think that your explaining skills are a great. Second - I have a question : I built my calculator and everything works perfect but I want to know how the Entry widget recognizes "123" as one number and not as three numbers - "1" , "2" , "3". Is that just how it works or what ? Because we don't need to code anything for it to do that.

[@trininite]

no, python will see it as a string

[@sulekedelai8564]

Hello From Indonesia

[@ykbroadcast5967]

super!!! Thanks a Lot..

[@Codemycom]

Sure thing!

[@kranthikiran6250]

how to select right padding width, so that space between all buttons are same both in horizontal and vertical direction

[@toinduino503]

estou gostando muito das aulas parabens profesor

[@Codemycom]

Glad you're enjoying them!

[@MajidHashemi-rt8le]

Thanks u🎉

[@Codemycom]

Welcome!

[@rockleejj123]

Hi, have a problem, at 11:04 line 25 and 26 button_0 = Button(root, text='0', padx=40, pady = 20, command = button_add()) button_add = Button(root, text='+', padx=40, pady = 20, command = button_add()) seems the button_add redefine the botton_add, it caused error 'Button' object is not callable did I type something wrong otherwise.

[@Codemycom]

shouldn't be any spaces after your padys and commands

[@parthpatel8192]

no its cause u used () in commands

[@nassudekanal4230]

you cant use parentheses

[@sadibouthioye6016]

i love this

[@johnpro2847]

Thanks great help ..

[@Codemycom]

Happy to help!

[@aneeshmadhavan2903]

How to make the tkinter window flexible when maximizing or adjusting the size of the window?

[@Codemycom]

Sorry, I don't know what you mean by flexible

[@RinksRides]

I smashed said "LIKE" button below, now my screen is broken... THANKS!

[@Codemycom]

Life is risk! lol

[@Mkz32]

U smashed the screen then got a syntax error anyways Good vid keep it up

[@Codemycom]

@@Mkz32 too funny!

[@Acuce7ibd468j]

hey john !!!! is there any way to make our python app stands alone in mobile without installing a python compiler ??? thank you

[@Codemycom]

Sure, but it's complicated...

[@ansh4786]

I like your tutorials but i want to know that how can we make that First when we start a start button will be visible and when we click it the screen changes to this calculator in that screen only not in another screen So please tell me And also Thank You

[@Codemycom]

Use frames or tabs

[@數學只考6級分]

I very like your video.

[@Codemycom]

Glad you like it :-)

[@wadhaer8332]

Thank you

[@Codemycom]

You're welcome

[@iemgote7249]

I´ve been trying to bind the buttons to keys on the keyboard, every time it seems to just type out all the numvers and they keys don't seem to do anything. Any advice?

[@Codemycom]

I've got several videos on binding on the playlist

[@davida6146]

Wow.... this is more advanced than I need... lol

[@Codemycom]

ha

[@Hawatt11]

I get a syntax error associated with the Lambda; based on some Stack Overflow comments this looks like it's not possible to use in Python 3? I should go try my older version of Python and see if it works there. Not sure how to get around this. OK never mind thanks, I saw your answer about lowercase L in "lambda". But YOUR screen keeps capitalizing them! At least it looks like uppercase.

[@Codemycom]

My screen does not capitalize them lol that's what a lowercase l looks like in sublime...

[@hedonistjohn6200]

I keep rewatching because my calculator window is way bigger that yours. My padx and pady are the same

[@Codemycom]

did you set the size of the app differently?

[@hedonistjohn6200]

@@Codemycom I don't see a step for sizing the window in the video. I think the main reason is I'm working on a Mac. I tried changing fg and bg colors and it would not work. I had to import tkmacosx. Which works but the layout changes when I comment it out vs use it. Thanks for the reply, hitting a walk with the next section in getting my icon to show up. I tried absolute path and relative paths.

[@Codemycom]

@@hedonistjohn6200 Right at the top of the app: root.geometry("500x550") or whatever numbers you want to put in there

[@jeff503pdx]

Looks nice but how to stylize the calculator?(colors/shapes/etc..)

[@Codemycom]

In the normal tkinter way...check my playlist.

[@nucleartesla]

When I came to 8:47 on the video where you made the buttons my buttons where all over the place could you help

[@Codemycom]

What did you do differently in your code? If you did what I did, you'd get the same result.

[@program_brain]

It's possible to excute the program in android phone sir.? What is name of the app sir?

[@Codemycom]

no tkinter doesn’t work on android

[@program_brain]

@@Codemycom thanks for reply sir. But my idea is to create android app using python. is there any idea to do that sir. What i have learn for that.?

[@matthewkeen6281]

nice..

[@Codemycom]

thanks

[@elchinefa9524]

Is not there a way to use for loop? By the way I gonna create a timer for PC with GUI and want to understant how i will use os. system's shutdown commands with tkinter. Of course input must be int.

[@chanero-u8z]

I just try it myself. In the end , the result is a little bad, but I have finish it.

[@chanero-u8z]

The tutorials are very useful ❤❤❤

[@Codemycom]

Glad you enjoy them!

[@digital-artefakt]

Hello, can you explain me why do you have to enter two arguments,like e.insert(0, number)? or (0,END)

[@Codemycom]

because you can delete certain characters in the entry box..so it's a range of all the characters in the entry box

[@digital-artefakt]

@@Codemycom oh, it is simple logic when you put it that way. Thank you on your fast answer!

[@brianmoreira7578]

16:30 when I use lambda the GUI launches but when I click a number I get an error TypeError: 'Button' object is not callable I don't understand cus I'm using lamda the same way he is. Please help!😥

[@brianmoreira7578]

I think it's because I've named my Button button1. I've noticed I have no error when I name it btn1 or button_1(like he did). Really wish he would've said something lol. But I'm going to see what happens when I change the rest of the Code.

[@brianmoreira7578]

Yea that was it. The Button cannot be named 'button1' or 'button' or 'Button'

[@Codemycom]

yep

[@guyincognito5614]

omg, thank god. Edit: having the same problem

[@Algeriawindows69]

16:21 hey dude i got an error that always says " e.delete( 0, END) ^^^^^^^^ AttributeError: 'NoneType' object has no attribute 'delete' " and even when i remove it another error pops " e.insert( 0, number) ^^^^^^^^ AttributeError: 'NoneType' object has no attribute 'insert'"

[@Codemycom]

You can't define a widget and .pack() it on the same line.

[@Algeriawindows69]

@@Codemycom still the same error but i think becoz i use .place()

[@Algeriawindows69]

@@Codemycomstill the same error "Exception in Tkinter callback Traceback (most recent call last): File "C:\Users\lenovo\AppData\Local\Programs\Python\Python311\Lib\tkinter\__init__.py", line 1948, in __call__ return self.func(*args) ^^^^^^^^^^^^^^^^ File "C:\Users\lenovo\Desktop\programs\python\balc.pyw", line 16, in , bg="#14151a",fg="white",command=lambda: numad(1)).grid(row=1,column=1) ^^^^^^^^ File "C:\Users\lenovo\Desktop\programs\python\balc.pyw", line 12, in numad e.delete( 0, END) ^^^^^^^^ AttributeError: 'NoneType' object has no attribute 'delete'"

[@Codemycom]

@@Algeriawindows69 yeah you can't .pack() or .grid() or .place() whatever you used to place the widget, on the same line that you defined the widget.

[@rexsoosan303]

Exception in Tkinter callback Traceback (most recent call last): File "C:\Users\Rex\AppData\Local\Programs\Python\Python38\lib\tkinter\__init__.py", line 1883, in __call__ return self.func(*args) File "G:/python/calc_gui.py", line 33, in button14= Button(root,text="0",padx=30,pady=30,command=lambda: Button_click(0)).grid(row=6,column=3) File "G:/python/calc_gui.py", line 12, in Button_click e.delete(0,tk.END) AttributeError: 'NoneType' object has no attribute 'delete'

[@kermitsan3892]

have same problem

[@sambosa56]

@@kermitsan3892 and me i thing because our version is python 3.8 but the video used older version python 3.7

[@mariogamer587]

How you run your code, I can't run my code in sublime text?? Good video!

[@Codemycom]

I'm not running the code in Sublime text. I'm using the git bash terminal that I downloaded. git-scm.com/downloads

[@mariogamer587]

@@Codemycom Ty I'll try that :]

[@mariogamer587]

@@Codemycom I just get an error: $ python calculator.py bash: python: command not found any solution?

[@Codemycom]

@@mariogamer587 you didn't add python to path when you installed it. Reinstall it, check the box that says add python to path.

[@mariogamer587]

@@Codemycom ok ty I added it through settings😊

[@sunilkjha3638]

Hello John. What does END do in e.delete(0, END)??

[@Codemycom]

Think of it as a python list...we're saying delete everything from position 0, to the END of the list.

[@sunilkjha3638]

@@Codemycom Thank you John. And is it the same in e.insert(0, number)? Does it mean that print everything from 0 to the number entered. Or am I wrong?

[@Codemycom]

@@sunilkjha3638 Basically, yes

[@jamesh6224]

Hello, after adding the column span I still have big gaps in-between my columns ?

[@Codemycom]

Weird...double check your code...

[@jamesh6224]

@@Codemycom The gaps remain even if i make all the buttons the same size

[@Codemycom]

@@jamesh6224 There has to be something wrong with your code, or something you aren't seeing...

[@Hyvexx]

This is late but I had the problem with it too. I was on Mac and it turns out that there is a way to tell the tkinter module to move the buttons closer. Just add sticky= "nsew" to the end of all of your .grid() method (example : button_1.grid(row=3, column=0, sticky="nsew") stackoverflow.com/questions/45828923/remove-space-between-buttons-in-tkinter#45844991

[@SmellyNutz]

@@Hyvexx You are a LIFESAVER!

[@nelsondarwinpaktech3954]

great

[@Codemycom]

Thanks

[@kerdes_1181]

Hello Codemy how can i get an auto selection on a row in a treeview when i get a search when i search i want to get the result i try tree.selection_set(), but it can't selected row

[@atoparis]

I am stuck with this... went through the whole list of comments but still have the issue: butt_1 = Button(root, text="1", padx=40, pady=20, command=lambda: butt_click(1)) However when I click the button it says object not callable

[@atoparis]

oh I see my error... I had a button named butt_click later in the code... fixed... leaving the comment in case it helps anyone

[@Codemycom]

@@atoparis Also, you can't padx and pady in the same place you defined the button.

[@khizaridrees1758]

Does the Capital L of lambda executed by your interpreter

[@Codemycom]

No, it's a lowercase l not capital L

[@crossfarm4146]

can you quickly explain a little more what e.insert(0,number) requires the 0? is it a boolean value of some sort?

[@Codemycom]

think of a python list...they are indexed...the first index number is 0. So we want to delete from zero to some number in the box.

[@2noiembrie83]

For python 3.10, with pycharm, in Ubuntu, it's lambda instead of Lambda.

[@Codemycom]

it's lowercase in the video too. I know it looks uppercase, but that's lower.

[@NotNormalDude-c1r]

6:55 the grid thing on my code does not work

[@ammall472]

Same, did you figure it out?

[@leannebourque]

when i execute it it says: ModuleNotFoundError: No module named 'tkinker'

[@leannebourque]

Nevermind, i spelled it wrong, lol

[@Codemycom]

@@leannebourque was just gonna say that lol

[@anti.com_john]

from tkinter import * ^^^ Use this

[@sourabhdeshpande2112]

in before lecture after button defining we put it button.pack() why it is not put in this lecture

[@Codemycom]

In this video we're using the .grid() system instead of .pack() grid is used when you need more precision placing your widgets.

[@ravinduabeygunasekara833]

what are the units of width and height that we define inside the 'root' function? Is it pixels?

[@Codemycom]

basically, yes

[@program_brain]

What is meaning for lambda? Why we have to use it here sir? I am beginner for python...

[@Codemycom]

tkinter won’t allow you to pass parameters to functions with commands unless you use a lambda

[@njbtechs]

Please show us how to the entry widget bigger because it's too small

[@Codemycom]

I do in the playlist already

[@gustavbrolin623]

How did you open your program?

[@Codemycom]

What do you mean? Open what?

[@bb-ur2dk]

we are using padx= 50 or 60 some number what is the number i mean units 50mm of 50 spaces

[@Codemycom]

Pixels

[@developershub4339]

how do you save the calculator built as an app.

[@Codemycom]

I have a video on making exe files in the playlist

[@akramelomrani8728]

for those who have END is not defined replace it with 'end'

[@Codemycom]

ok

[@dumidupramith3881]

good

[@Codemycom]

Thanks

[@yeuduongtamhuong]

width and padx button, how different?

[@Codemycom]

one changes the width, and the other adds padding

[@nientranai1669]

how do you know to set the padx of "=" is 91 ???

[@Codemycom]

Trial and error

[@nathaliequispedextre5222]

How’s it going?

[@Codemycom]

It's going

[@gpecs]

why is tkinter gui not loading automatically why do i need to re-run it everytime i make changes.

[@Codemycom]

that's how all coding works

[@yuvithegreat3878]

I am using .place() to place the entry and buttons but it is END is not defined. Can u help Me?

[@Codemycom]

I never use place

[@yuvithegreat3878]

@@Codemycom Ok. Il try to use .grid() method.

[@Codemycom]

@@yuvithegreat3878 cool

[@Harish-ou4dy]

in my computer Lambda gave syntax error, lambda with small l works though

[@Codemycom]

Yeah, it's never supposed to be capital L in lambda. I do lowercase in the video.

[@ichabodsescape1885]

@@Codemycom It got me too the video looks like upper case L

[@Codemycom]

@@ichabodsescape1885 Yeah, I hate that sublime does that

[@KodiLearn]

Use PyCharm. 😀

[@shauryagoyal911]

i am getting this error Exception in Tkinter callback Traceback (most recent call last): File "C:\Users\GEETIKA\AppData\Local\Programs\Python\Python37\lib\tkinter\__init__.py", line 1705, in __call__ return self.func(*args) File "D:\tkinter\Project 1 - Calculator.py", line 38, in button_8 = Button(root, text = "8", padx=40, pady=20, command = lambda: button_click(8)) TypeError: button_click() takes 0 positional arguments but 1 was given pls tell

[@Codemycom]

You're passing 8 into your button_click function. Does your button_click function code accept arguments?

[@mindset873]

How can I subscribe only 27 $ to be accessible to all online courses. Please show me how. I visited the site but did not see it in front of computer screen.

[@Codemycom]

codemy.com/membership-account/membership-checkout/?level=1 Add the coupon code and click the apply button

[@Samuel-yh5lh]

after adding the columnspan of the clear and equals button the 0 button didnt show

[@shaunakn5881]

what does lambda do?

[@Codemycom]

lets you pass arguments thru a function

[@shaunakn5881]

@@Codemycom ok sir thanks tkinter fascinates me!

[@themeow6190]

hey, for some reason when i try to do the e.get, it says there is no attribute called get, can you plez help me

[@zeyadabbood8401]

do the grid in a new line and it will solve the problem. for example: e = Entry(root) e.grid(row=0, column=0) instead of e = Entry (root).grid(row=0, column=0)

[@fisherman23gp]

@@zeyadabbood8401 Bless you

[@RATANAGARWALITINFORMER]

v helpping

[@МаликаШангитова]

Hi, I have SyntaxError: positional argument follows keyword argument. why

[@Codemycom]

Because you typed the code wrong... compare it to the video to discover what you did differently.

[@21no.8john9]

i wonder about lambda function , i never see to use function outside and use inside lambda , can anyone tell me how it work

[@Codemycom]

Sorry, I don't know what you're asking

[@21no.8john9]

@@Codemycom sorry it's not clear I just beginner I always use lambda like this x = lambda a: a + 10 print(x(5)) And I see you take the function and use inside lambda

[@Codemycom]

@@21no.8john9 tkinter uses lambdas slightly differently.

[@sarahlewis7859]

I've done the code the same as you have but whenever i click on a number button it says "TypeError: button_click() takes 0 positional argument but 1 was given" I have no idea what this means please help o_o

[@Codemycom]

then you haven't done the code the same as me. Check for typos...

[@mrawesome7739]

When you originally defined button click, you probably didn't put anything between the parenthesis. The correct code should be def button_click(number):

[@adebolaokanlawonsaseyi6655]

Hello, how do i increase the height of the calculator screen. It seems i can only adjust the width?. I tried increasing the height and got the following error: tkinter.TclError: unknown option "-height"

[@Codemycom]

Do you mean the entry box? You increase the font size: font=("Helvetica", 20)

[@adebolaokanlawonsaseyi6655]

@@Codemycom yes entry box, would ("Arial" 20) also work?

[@Codemycom]

@@adebolaokanlawonsaseyi6655 Try it and see. You could have just tried it faster than it took to ask me.

[@adebolaokanlawonsaseyi6655]

@@Codemycom Thank you, it worked.

[@Codemycom]

@@adebolaokanlawonsaseyi6655 sweet

[@deepanshumohan7777]

I am facing issue while entering a new number with result already present in the input box (concatenation issue). How to resolve it?

[@Codemycom]

Without knowing what you are doing or what your code is, I can't guess.

[@deepanshumohan7777]

@@Codemycom I am working on Simple calculator. Whenever I type a new number, it gets concatenated with the previous result instead of clearing it.

[@Codemycom]

@@deepanshumohan7777 My answer to you doesn't change...

[@fonzyurriquia8640]

i use the "lambda" and when i run it, the terminal says "Syntax Error: Invalid Syntax". What do i need to do?

[@Codemycom]

lowercase l in lambda

[@fonzyurriquia8640]

@@Codemycom thank you. you're the best

[@Codemycom]

@@fonzyurriquia8640 you’re welcome