is there anyway to make this shorter? i hate having these big blocks
of similar-looking code, very unaesthetic.
maybe doesnt matter good-code-wise?
anyway can i make some function that makes this shorter?
like put the etiquettes on the button froma string of
'123+456-789*0Cr/' ?
problem is the command and lambda-func for each button is different.
self.btnDisplay = Button(self,text='1',command=lambda
n="1":self.Display(n),width=2,height=2)
self.btnDisplay.grid(row=3, column=0)
self.btnDisplay = Button(self,text='2',command=lambda
n="2":self.Display(n),width=2,height=2)
self.btnDisplay.grid(row=3, column=1)
self.btnDisplay = Button(self,text='3',command=lambda
n="3":self.Display(n),width=2,height=2)
self.btnDisplay.grid(row=3, column=2)
self.btnDisplay = Button(self,text='+',command=lambda
n="+":self.Display(n),width=2,height=2)
self.btnDisplay.grid(row=3, column=3)
self.btnDisplay = Button(self,text='4',command=lambda
n="4":self.Display(n),width=2,height=2)
self.btnDisplay.grid(row=4, column=0)
self.btnDisplay = Button(self,text='5',command=lambda
n="5":self.Display(n),width=2,height=2)
self.btnDisplay.grid(row=4, column=1)
self.btnDisplay = Button(self,text='6',command=lambda
n="6":self.Display(n),width=2,height=2)
self.btnDisplay.grid(row=4, column=2)
self.btnDisplay = Button(self,text='-',command=lambda
n="-":self.Display(n),width=2,height=2)
self.btnDisplay.grid(row=4, column=3)
self.btnDisplay = Button(self,text='7',command=lambda
n="7":self.Display(n),width=2,height=2)
self.btnDisplay.grid(row=5, column=0)
self.btnDisplay = Button(self,text='8',command=lambda
n="8":self.Display(n),width=2,height=2)
self.btnDisplay.grid(row=5, column=1)
self.btnDisplay = Button(self,text='9',command=lambda
n="9":self.Display(n),width=2,height=2)
self.btnDisplay.grid(row=5, column=2)
self.btnDisplay = Button(self,text='*',command=lambda
n="*":self.Display(n),width=2,height=2)
self.btnDisplay.grid(row=5, column=3)
self.btnDisplay = Button(self,text='0',command=lambda
n="0":self.Display(n),width=2,height=2)
self.btnDisplay.grid(row=6, column=0)
self.btnDisplay =
Button(self,text='C',command=self.Clean,width=2,he ight=2)
self.btnDisplay.grid(row=6, column=1)
self.btnDisplay = Button(self,text='r',command=lambda
n="r":self.Display(n),width=2,height=2)
self.btnDisplay.grid(row=6, column=2)
self.btnDisplay = Button(self,text='/',command=lambda
n="/":self.Display(n),width=2,height=2)
self.btnDisplay.grid(row=6, column=3)
3  1841 
<sk*******@yahoo.sewrote in message
news:c9**********************************@j1g2000p rb.googlegroups.com...
| is there anyway to make this shorter? i hate having these big blocks
| of similar-looking code, very unaesthetic.
| maybe doesnt matter good-code-wise?
| anyway can i make some function that makes this shorter?
| like put the etiquettes on the button froma string of
| '123+456-789*0Cr/' ?
| problem is the command and lambda-func for each button is different.
|
|
| self.btnDisplay = Button(self,text='1',command=lambda
| n="1":self.Display(n),width=2,height=2)
| self.btnDisplay.grid(row=3, column=0)
|
| self.btnDisplay = Button(self,text='2',command=lambda
| n="2":self.Display(n),width=2,height=2)
| self.btnDisplay.grid(row=3, column=1)
|
| self.btnDisplay = Button(self,text='3',command=lambda
| n="3":self.Display(n),width=2,height=2)
| self.btnDisplay.grid(row=3, column=2)
|
| self.btnDisplay = Button(self,text='+',command=lambda
| n="+":self.Display(n),width=2,height=2)
| self.btnDisplay.grid(row=3, column=3)
|
| self.btnDisplay = Button(self,text='4',command=lambda
| n="4":self.Display(n),width=2,height=2)
| self.btnDisplay.grid(row=4, column=0)
|
| self.btnDisplay = Button(self,text='5',command=lambda
| n="5":self.Display(n),width=2,height=2)
| self.btnDisplay.grid(row=4, column=1)
|
| self.btnDisplay = Button(self,text='6',command=lambda
| n="6":self.Display(n),width=2,height=2)
| self.btnDisplay.grid(row=4, column=2)
|
| self.btnDisplay = Button(self,text='-',command=lambda
| n="-":self.Display(n),width=2,height=2)
| self.btnDisplay.grid(row=4, column=3)
|
| self.btnDisplay = Button(self,text='7',command=lambda
| n="7":self.Display(n),width=2,height=2)
| self.btnDisplay.grid(row=5, column=0)
|
| self.btnDisplay = Button(self,text='8',command=lambda
| n="8":self.Display(n),width=2,height=2)
| self.btnDisplay.grid(row=5, column=1)
|
| self.btnDisplay = Button(self,text='9',command=lambda
| n="9":self.Display(n),width=2,height=2)
| self.btnDisplay.grid(row=5, column=2)
|
| self.btnDisplay = Button(self,text='*',command=lambda
| n="*":self.Display(n),width=2,height=2)
| self.btnDisplay.grid(row=5, column=3)
|
| self.btnDisplay = Button(self,text='0',command=lambda
| n="0":self.Display(n),width=2,height=2)
| self.btnDisplay.grid(row=6, column=0)
|
| self.btnDisplay =
| Button(self,text='C',command=self.Clean,width=2,he ight=2)
| self.btnDisplay.grid(row=6, column=1)
|
| self.btnDisplay = Button(self,text='r',command=lambda
| n="r":self.Display(n),width=2,height=2)
| self.btnDisplay.grid(row=6, column=2)
|
| self.btnDisplay = Button(self,text='/',command=lambda
| n="/":self.Display(n),width=2,height=2)
| self.btnDisplay.grid(row=6, column=3)
With the exception of the 'C' button, the only thing different is the label
and position.
I believe (untested, obviously)
def btn(self, txt, r, c):
self.btnDisplay = Button(self, text=txt, command=lambda:
self.Display(txt), width=2,height=2)
self.btnDisplay.grid(row=r, column=r)
will work.
tjr
sk*******@yahoo.se wrote:
is there anyway to make this shorter? i hate having these big blocks
of similar-looking code, very unaesthetic.
maybe doesnt matter good-code-wise?
anyway can i make some function that makes this shorter?
like put the etiquettes on the button froma string of
'123+456-789*0Cr/' ?
problem is the command and lambda-func for each button is different.
You can look up the command in a dictionary:
commands = {"C": self.Clean}
top = 3
for i, text in enumerate("123+456-789*0Cr/"):
row, column = divmod(i, 4)
try:
command = commands[text]
except KeyError:
def command(n=text):
self.Display(n)
button = Button(self, text=text, command=command, width=2, height=2)
button.grid(row=top+row, column=column)
The problem with this is that the shorter code may take a bit longer to
understand, so that there is no net win for the reader. A compromise would be
to define a helper function:
def make_button(self, row, column, text, command):
# implementation left as an exercise
# use it:
self.make_button(3, 0, "1", lambda n="1": ...)
self.make_button(3, 1, "2", lambda n="2": ...)
....
Peter
On Apr 6, 1:59*pm, skanem...@yahoo.se wrote:
is there anyway to make this shorter? i hate having these big blocks
of similar-looking code, very unaesthetic.
maybe doesnt matter good-code-wise?
anyway can i make some function that makes this shorter?
like put the etiquettes on the button froma string of
'123+456-789*0Cr/' ?
problem is the command and lambda-func for each button is different.
* * * * self.btnDisplay = Button(self,text='1',command=lambda
n="1":self.Display(n),width=2,height=2)
* * * * self.btnDisplay.grid(row=3, column=0)
* * * * self.btnDisplay = Button(self,text='2',command=lambda
n="2":self.Display(n),width=2,height=2)
* * * * self.btnDisplay.grid(row=3, column=1)
* * * * self.btnDisplay = Button(self,text='3',command=lambda
n="3":self.Display(n),width=2,height=2)
* * * * self.btnDisplay.grid(row=3, column=2)
* * * * self.btnDisplay = Button(self,text='+',command=lambda
n="+":self.Display(n),width=2,height=2)
* * * * self.btnDisplay.grid(row=3, column=3)
* * * * self.btnDisplay = Button(self,text='4',command=lambda
n="4":self.Display(n),width=2,height=2)
* * * * self.btnDisplay.grid(row=4, column=0)
* * * * self.btnDisplay = Button(self,text='5',command=lambda
n="5":self.Display(n),width=2,height=2)
* * * * self.btnDisplay.grid(row=4, column=1)
* * * * self.btnDisplay = Button(self,text='6',command=lambda
n="6":self.Display(n),width=2,height=2)
* * * * self.btnDisplay.grid(row=4, column=2)
* * * * self.btnDisplay = Button(self,text='-',command=lambda
n="-":self.Display(n),width=2,height=2)
* * * * self.btnDisplay.grid(row=4, column=3)
* * * * self.btnDisplay = Button(self,text='7',command=lambda
n="7":self.Display(n),width=2,height=2)
* * * * self.btnDisplay.grid(row=5, column=0)
* * * * self.btnDisplay = Button(self,text='8',command=lambda
n="8":self.Display(n),width=2,height=2)
* * * * self.btnDisplay.grid(row=5, column=1)
* * * * self.btnDisplay = Button(self,text='9',command=lambda
n="9":self.Display(n),width=2,height=2)
* * * * self.btnDisplay.grid(row=5, column=2)
* * * * self.btnDisplay = Button(self,text='*',command=lambda
n="*":self.Display(n),width=2,height=2)
* * * * self.btnDisplay.grid(row=5, column=3)
* * * * self.btnDisplay = Button(self,text='0',command=lambda
n="0":self.Display(n),width=2,height=2)
* * * * self.btnDisplay.grid(row=6, column=0)
* * * * self.btnDisplay =
Button(self,text='C',command=self.Clean,width=2,he ight=2)
* * * * self.btnDisplay.grid(row=6, column=1)
* * * * self.btnDisplay = Button(self,text='r',command=lambda
n="r":self.Display(n),width=2,height=2)
* * * * self.btnDisplay.grid(row=6, column=2)
* * * * self.btnDisplay = Button(self,text='/',command=lambda
n="/":self.Display(n),width=2,height=2)
* * * * self.btnDisplay.grid(row=6, column=3)
You said you were an experienced programmer, but you keep posting code
with the same mistakes over and over again. Why are you attaching the
buttons to self? This thread has been closed and replies have been disabled. Please start a new discussion. Similar topics
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