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Josh Keenan
19,652 PointsTkinter Button problem
So what I'm doing is placing 35 buttons in a grid, each using a function called function (inventive right?).
In tkinter to make a button work you can't use parentheses when setting the command, otherwise it runs as soon as the program starts, I need to use them and obviously the code runs instantly.
Anyone know how to stop this?
def function(self, text):
print (text)
def mock_fill(self, row, col, text):
#temp = tkinter.Label(
# self.mainframe,
# bg='grey',
# text=text,
# fg='black',
# font=('Helvetica', 10)
#)
temp = tkinter.Button(
self.mainframe,
text=text,
command=self.function(text)
)
temp.grid(
row=row, column=col,
sticky='ew', # East West
padx=10, pady=10
)
Thanks :)
Josh Keenan
19,652 PointsYes that is an indentation error when copying in to treehouse, my bad!
2 Answers
Chris Freeman
Treehouse Moderator 68,423 PointsGood. Because I plan to make function a method of mock_fill....
def mock_fill(self, row, col, text):
# temp = tkinter.Label(
# self.mainframe,
# bg='grey',
# text=text,
# fg='black',
# font=('Helvetica', 10)
# )
def function(self): # <-- note drop of param 'text'
print (text) # 'text' becomes an encapsulated global for 'function'
temp = tkinter.Button(
self.mainframe,
text=text,
command=function # <-- reference local function
)
temp.grid(
row=row, column=col,
sticky='ew', # East West
padx=10, pady=10
)
To see this in practice:
$ python3
Python 3.4.0 (default, Jun 19 2015, 14:20:21)
[GCC 4.8.2] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> class MockItAll():
... def mock_fill(self, row, col, text):
... def funct():
... print(text)
... setattr(self, "mock_{}_{}".format(row, col), funct)
...
>>> mock_all = MockItAll()
# Create function as an attribute to call later
>>> mock_all.mock_fill(0, 0, "zero-zero")
>>> mock_all.mock_0_0
<function MockItAll.mock_fill.<locals>.funct at 0x7fa9d63af730>
# Call function
>>> mock_all.mock_0_0()
zero-zero
# Create 2nd function
>>> mock_all.mock_fill(0, 1, "zero-one")
>>> mock_all.mock_0_1
<function MockItAll.mock_fill.<locals>.funct at 0x7fa9d63af840>
# Call second function
>>> mock_all.mock_0_1()
zero-one
Josh Keenan
19,652 PointsI swear one day I will be as good as you! Thanks as always Chris! :)
Josh Keenan
19,652 PointsHad to drop the self from function in my IDE, weird huh? But it all works, thanks a lot!
Chris Freeman
Treehouse Moderator 68,423 PointsChris Freeman
Treehouse Moderator 68,423 PointsCan I assume
mock_fillisn't intended to be indented to be a method offunction?