Help Please ! Undocumented ERROR message so dont know how to fix the problem

[Stephen Tucker]

To murdock: What Rhodri wrote is correct. I sense that it might be helpful
for you if I were to tell you that there is a difference between a function
and a function call. If your function were named

MyFunction

then

print (MyFunction)

would print a user-friendly-ish message about the function. This message
tells you (a) that the object you are asking Python to print is a function,
and (b) the address (in hexadecimal) in memory where the code for
MyFunction is stored. This is what your code is doing - hence the message
from Python.

If, on the other hand you have

print (MyFunction(any-parameters-to-MyFunction-with-commas-between-them))

then Python would recognise that (a) you are wanting it to call MyFunction
with the specified parameters, if any, (b) you are expecting that the
function will return a printable result, and (c) you are also expecting it
to print that result.

So, in order to get Python to do that, all you need to do is:

(1) to add the parentheses after the function name in the print statement [
so print (MyFunction) becomes print (MyFunction()) ];

(2) If your function has any parameters, add them, separated with commas,
between the parentheses [ so print (MyFunction()) becomes print
(MyFunction(parameters-separated-with-commas)) ];

(3) and rerun the new code - which should then do what you are wanting it
to do.

I hope this helps.

Stephen Tucker.









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On Tue, May 2, 2017 at 2:11 PM, Rhodri James <rhodri at kynesim.co.uk> wrote:

> On 02/05/17 03:57, murdock wrote:
>
>> I am having a problem that seems to persist. I have written a program
>> that makes a mathematical calculation and uses a uses library that I have
>> written. It had been working but somehow in playing around with it, it
>> stopped....go figure!  But here is the thing, when I run the program it
>> gives me a very ambiguous message with only a string as in:
>>
>> "The Receiver Noise Figure =  <function _Noise_Figure at
>> 0x00000000063E5A60>  dBm"
>>
>
> This is not an error message.  This is Python faithfully printing out what
> you asked it to print out.  Here's the line that does the printing:
>
>     print ("The Receiver Noise Figure = ",Hamath._Noise_Figure," dBm" )
>
> The weird-looking bit of the message is the representation of a function,
> and lo! in the parameters to print() there is the function
> Hamath._Noise_Figure.  Note that this is the function itself, *not* the
> result of calling it, since you *don't* call it.
>
> --
> Rhodri James *-* Kynesim Ltd
> --
> https://mail.python.org/mailman/listinfo/python-list
>