As a new guy, I was trying to write a simple unit conversion
program in Tk. I got this error message:TclError: unknown option "-command"
>>> Traceback (most recent call last):
File
"D:\Python24\Lib\site-packages\pythonwin\pywin\framework\scriptutils.py",
line 310, in RunScript
exec codeObject in __main__.__dict__
File "D:\Python24\Convert it\Tk Grid demo2py.py", line 70, in ?
main()
File "D:\Python24\Convert it\Tk Grid demo2py.py", line 67, in main
Application().mainloop()
File "D:\Python24\Convert it\Tk Grid demo2py.py", line 22, in __init__
, relief=SUNKEN)
File "D:\Python24\lib\lib-tk\Tkinter.py", line 2409, in __init__
Widget.__init__(self, master, 'listbox', cnf, kw)
File "D:\Python24\lib\lib-tk\Tkinter.py", line 1862, in __init__
self.tk.call(
TclError: unknown option "-command"
Any Ideas?
Joe Cox
513-293-4830
from Tkinter import *
class Application( Frame ):
def __init__(self):
Frame.__init__(self)
self.master.title( "Conver Units" )
self.master.rowconfigure( 0, weight = 1 )
self.master.columnconfigure( 0, weight = 1 )
self.grid( sticky = W+E+N+S )
"""Create the Text"""
self.lbRSSSiteText = Label(self, text="Convert Length Units From:")
self.lbRSSSiteText.grid(row=0, column=0, sticky=W)
self.lbRSSItemText = Label(self, text="Convert Length Units To:")
self.lbRSSItemText.grid(row=0, column=2, sticky=W)
"""Create the First ListBox"""
scrollbarV = Scrollbar(self, orient=VERTICAL)
self.lbSites = Listbox(self,command=self.reveal, exportselection=0
, relief=SUNKEN)
self.lbSites.grid(row=1, column=0, columnspan=1, sticky=N+W+S+E)
for line in ['Miles','Yards','Feet','Inches']:
self.lbSites.insert(END, line)
"""Create the Second ListBox"""
self.lbRSSItems = Listbox(self, exportselection=0
,command=self.reveal
, relief=SUNKEN)
self.lbRSSItems.grid(row=1, column=2, sticky=N+W+S+E)
for line in ['Miles','Yards','Feet','Inches']:
self.lbRSSItems.insert(END, line)
self.button1 = Button( self, text = "Convert", width = 25 )
self.button1.grid( row = 7, column = 1, columnspan = 2, sticky = W+E+N+S )
"""Create the Text"""
self.entry = Label(self, text="Input:")
self.entry.grid(row=8, column=0, sticky=W)
self.text2 = Label(self, text="Output:")
self.text2.grid(row=8, column=2, sticky=W)
self.entry = Entry( self )
self.entry.grid( row = 11, columnspan = 2, sticky = W+E+N+S )
self.text2 = Text( self, width = 2, height = 2 )
self.text2.grid( row = 11, column = 2, sticky = W+E+N+S )
def reveal(self):
a = self.entry.get()
b = self.text2.get()
c = self.lbSites.get(exportselection)
d = self.lbRSSItems.get(exportselection)
if c == Miles and d == Feet:
message ="Equals"+ a*5280
self.text2.insert(0.0,message)
def main():
Application().mainloop()
if __name__ == "__main__":
main()
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