[Tutor] Syntax question
Hi,
I'm trying to configure a button that prints a variable and calls a
function at the same time...but I can't figure out how to get the syntax
right...or if this is even possible:
print("You have selected to convert "), croptype
I've tried various combinations of the above...but can't get it to
work...any clues as to what I should do:
Thanks,
Matt
code for this part says;
def wheatwords():
print("You have selected to convert "), croptype
price = int(float(input("What is the current price?")))
amount = int(input("\n How much grain in metric tonnes?"))
print("This is")
print(price * amount, "Metric Tonnes")
wheatbutton = Button(root, text="Wheat", fg="black", bg="yellow")
wheatbutton.configure(croptype="wheat", command=wheatwords)
Matthew Polack | Teacher
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Re: [Tutor] Syntax question
On 09/08/18 05:10, Matthew Polack wrote:
> I'm trying to configure a button that prints a variable and calls a
> function at the same time...but I can't figure out how to get the syntax
> right...or if this is even possible:
Of couse its possible just wrap it in a higher level function:
def newfunc():
print(variable)
callFunction()
> print("You have selected to convert "), croptype
The crop type needs to be inside the parens
if you want it printed. That's the syntax error.
If you are trying to call a function called croptype
then you need to put it on a separate line and lose the ,
and add parens.
> code for this part says;
>
> def wheatwords():
> print("You have selected to convert "), croptype
> price = int(float(input("What is the current price?")))
> amount = int(input("\n How much grain in metric tonnes?"))
> print("This is")
> print(price * amount, "Metric Tonnes")
>
I'll assume the lack of indentation is an email formatting
issue. Did you post in plain text?
> wheatbutton = Button(root, text="Wheat", fg="black", bg="yellow")
> wheatbutton.configure(croptype="wheat", command=wheatwords)
You set croptype to "wheat" but croptype is not an attribute
of Button. You can't just add arbitrary attributes you need
to use the ones that the object supports. You can see them
by using help(). For example:
>>> help(tk.Button)
Help on class Button in module tkinter:
class Button(Widget)
| Button widget.
|
| Method resolution order:
| Button
| Widget
| BaseWidget
| Misc
| Pack
| Place
| Grid
| builtins.object
|
| Methods defined here:
|
| __init__(self, master=None, cnf={}, **kw)
| Construct a button widget with the parent MASTER.
|
| STANDARD OPTIONS
|
| activebackground, activeforeground, anchor,
| background, bitmap, borderwidth, cursor,
| disabledforeground, font, foreground
| highlightbackground, highlightcolor,
| highlightthickness, image, justify,
| padx, pady, relief, repeatdelay,
| repeatinterval, takefocus, text,
| textvariable, underline, wraplength
|
| WIDGET-SPECIFIC OPTIONS
|
| command, compound, default, height,
| overrelief, state, width
|
Shows the valid options available.
--
Alan G
Author of the Learn to Program web site
http://www.alan-g.me.uk/
http://www.amazon.com/author/alan_gauld
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[Tutor] Fwd: Syntax question
missed reply all Abdur-Rahmaan Janhangeer https://github.com/Abdur-rahmaanJ Mauritius -- Forwarded message - From: Abdur-Rahmaan Janhangeer Date: Thu, 9 Aug 2018, 11:56 Subject: Re: [Tutor] Syntax question To: Matthew Polack wheatbutton = Button(root, text="Wheat", fg="black", bg="yellow", command=wheatwords) Abdur-Rahmaan Janhangeer https://github.com/Abdur-rahmaanJ Mauritius ___ Tutor maillist - Tutor@python.org To unsubscribe or change subscription options: https://mail.python.org/mailman/listinfo/tutor
