On Thu, May 2, 2024 at 6:32 PM Michael Frotscher <frotsc...@gmail.com>
wrote:
> Here's the full code of my service:
>
> def new_archive_packet(self, event):
>
> if 'pressure' != None:
> newpressure = ('pressure' * 10)
> event.record['pb'] = newpressure
>
Strictly interpreted, you first ask whether the string "'pressure'" is
equal to None. It's not, so we proceed to the next statement. Now you're
trying to multiply a string ('pressure') by 10. Surprisingly, this will
succeed, but likely does not give you the results you expect. The variable
"newpressure" will actually be set to the string
'pressurepressurepressurepressurepressurepressurepressurepressurepressurepressure'.
That is, the string 'pressure' concatenated 10 times.
You want a *variable* pressure, not the literal string 'pressure'. Where
will it come from?
I would suggest taking an online Python course if this is unfamiliar to
you.
-tk
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