Terry Reedy於 2019年9月8日星期日 UTC+8下午5時31分34秒寫道： > On 9/7/2019 9:44 PM, jf...@ms4.hinet.net wrote: > > I know it is valid, according to the Tkinter source, every widget > > constructor has a 'master=None' default. What happens on doing this? > > Tkinter creates a default Tk object and uses that as the master. > > >>> t = tkinter.Text() > >>> t.master > <tkinter.Tk object .> > > > In what circumstance, we do it this way? and will it cause any trouble? > > I believe it is OK if you always do it that way within a single > application. But I prefer to have an explicit reference and use that > for .after calls and some others. > > > -- > Terry Jan Reedy
If I have two widgets created this way: t0 = tkinter.Text() t1 = tkinter.Text() How many Tk objects will there be? --Jach -- https://mail.python.org/mailman/listinfo/python-list
