Yes, that first option worked.
Special thanks...
Steve
===
Footnote:
If 666 is considered evil, then technically, 25.8069758 is the root of all
evil.
-Original Message-
From: Python-list On
Behalf Of Peter Otten
Sent: Sunday, August 30, 2020 5:29 AM
To: python-list@python.org
Subject: Re: Problem running a FOR loop
Steve wrote:
> Compiles, no syntax errors however, line 82 seems to run only once
> when the FOR loop has completed.
> Why is that? All fields are to contain the specifications, not just
> the last one.
It seems that passing the StringVar to the Entry widget is not sufficient to
keep it alive.
> for lineItem in range(len(ThisList)):
> NewSpec = tk.StringVar()
> SVRCodeEntered = ttk.Entry(window, width = 15, textvariable =
> NewSpec)
When the previous NewSpec is overwritten with the current one the previous
gets garbage-collected and its value is lost.
The straight-forward fix is to introduce a list:
new_specs = []
> for lineItem in range(len(ThisList)):
> NewSpec = tk.StringVar()
new_specs.append(NewSpec)
> SVRCodeEntered = ttk.Entry(window, width = 15, textvariable =
> NewSpec)
Another option is to store the StringVar as an attribute of the Entry:
> for lineItem in range(len(ThisList)):
> NewSpec = tk.StringVar()
> SVRCodeEntered = ttk.Entry(window, width = 15, textvariable =
> NewSpec)
SVRCodeEntered.new_spec = NewSpec
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