Mailing List Archive: accessing calling scripts from called scripts at run time

I'm having trouble accessing a calling script from a called script at run
time.
Here is an example:

#first file, will call second
from Tkinter import *
import tkFileDialog, string

root = None

def importScript():
filename = tkFileDialog.askopenfilename()
if filename != '':
list = string.split(filename, '/')
filename = list[-1]
#dir = string.join(list[:-1], '/')
#sys.path.append(dir)
exec "import %s" % filename[:-3]

if __name__ == "__main__": #?
root = Tk()
b = Button(root, text="import script", command=importScript)
b.pack()
root.mainloop()

#another file, picked by tkFileDialog at run time by user
from importTest import root
root.config(bg='green')

If I put the "if __name__ == '__main__':" in, the second file can't get at
the
root properly. If I leave it out, when I import root in the second file, it
creates
a new root window. How can I get at the root without making a new one?

Thanks,

John

John Michelsen says:

> I'm having trouble accessing a calling script from a called script
> at run time. Here is an example:
>
> #first file, will call second
> from Tkinter import *
> import tkFileDialog, string
>
> root = None
>
> def importScript():
> filename = tkFileDialog.askopenfilename()
> if filename != '':
> list = string.split(filename, '/')
> filename = list[-1]
> #dir = string.join(list[:-1], '/')
> #sys.path.append(dir)
> exec "import %s" % filename[:-3]
>
> if __name__ == "__main__": #?
> root = Tk()
> b = Button(root, text="import script", command=importScript)
> b.pack() root.mainloop()
>
>
> #another file, picked by tkFileDialog at run time by user
> from importTest import root
> root.config(bg='green')
>
>
> If I put the "if __name__ == '__main__':" in, the second file can't
> get at the root properly. If I leave it out, when I import root in
> the second file, it creates a new root window. How can I get at the
> root without making a new one?
>

The straightforward way: Give all the dialog-modules a run(...)
method. Use
mod = __import__(filename)
mod.run(root, ....)

- Gordon