How to Validate an Entry Widget as an Integer - Python Tkinter GUI Tutorial #67

In this video I'll show you how to determine whether someone typed an integer into an entry box or not.

There are many times when you need someone to only type a number into a text box. What happens if they type text instead? In this video I'll show you how to make sure they only type a number in to the box.

#tkinter #pythontkinter #tkintergui

[siobhanallen]

Fantastic. Lovely clear uncluttered examples. Thank you

[maureenighogboja]

I love your explanations. Since I started watching your videos I've never understood python more better with your explanations. Thanks a lot

[musaddikhossain]

That is the primary key - getting the user input before calling int() or float(). Salute to you, sir.

[lucaseduardoalves]

Beautiful videos, I made my first business program, for an company, thanks very much for tutorials, amazing!

[ranjanpal]

Amazing Explanation...Just one query...How can we ensure that the ENTRY box can only take digits and decimal places ?

[karthikrajamony]

Hi John, how to validate for the entry to accept float number in addition to integer values?

[maxibesso]

Thanks for showing us all this for free, most of the content you teach is difficult to get or understand elsewhere, will you make a video explaining how to change frames? or how to assign a textvariable to several entries created with a "for" loop, regards from Argentina.

[ayanmadhu]

When I use 'if e in list:' my program is always going to the else option
basically I am getting the user to input a number into the entry widget and the widget runs that number through the list and is supposed to say its its in the list but any number i put in, its saying its not in the list

[Codemycom]

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[ajsunofficial]

How about decimal as well as a number restriction on the field..with no letters allowed.will float work for decimals too..??

[-eckes-w.]

Hi, i made an entrybox and want to check if it is a number ( float or integer - both should be possible)

try:
inputbox.get().replace(".", "", 1).isdigit()
print ("is a number")
except:
print ("is not a number !")

but it doesn't work :-(

[AhmedHassan-joil]

Since you are the best tkinter tutor and I recommend you to anyone who ask me, I was wondering if you can cover a subject I couldn't find anyone covering even tho it's really handy.
Auto Complete Combo Box
When we assign values to a combo box how about when the user starts typing it just start auto completion based on letters in items in the list

[anushjohn]

Hey John, I have a question. What you showed in the video just tells the user to enter an integer/float. How do I use the entry as a range or something in a for loop. Example: for i in range(my_box.get). When I type this, it shows the error that the range cannot be a string

[danielwamboyo]

Can you do a while loop for multiplication so when you multiple a number the loop keep going

[Hans_jagpalsukh]

How to add validation for entry label to enter only numbers
Like i have an entry name studentID_entry and have text variable=self.var_std_id


And the data is connected to database mysql


So how can i putt validation



To do this
When i enter data to save the data in database by cliking on the save button it shows enter only numbers

[devchaudhari]

How do we make the number in the entry add to any number you want when you put it in

[Jammx]

how do i validate that the user has entered something? and if not, return an error message or a second try at inputting the data

[Bruno_Felipe]

I'm trying to redo your code but I am always receiving this message error "'NoneType' object has no attribute 'get'" I don't understand.

[nimaojaghi]

Hi Brother Thank For Your Teaching I Find That Thing I Was Looking For :x

[sidhumm]

Can't we use "validate" attribute of Entry widget?