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Newsgroups: comp.lang.python
Date: Fri, 3 Aug 2012 11:23:58 -0700 (PDT)
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Subject: Re: Calling Values
From: subhabangalore@gmail.com
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On Friday, August 3, 2012 10:50:52 PM UTC+5:30, Dennis Lee Bieber wrote:
> On Fri, 3 Aug 2012 04:49:46 -0700 (PDT), Subhabrata
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> <subhabangalore@gmail.com> declaimed the following in
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> gmane.comp.python.general:
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>=20
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> > Dear Group,
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> >=20
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> > I am trying to call the values of one function in the another function =
in the following way:
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>=20
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> 	Technically, "the values of one function" are whatever it RETURNS;
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> > def func1():
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> > 	num1=3D10
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> > 	num2=3D20
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> > 	print "The Second Number is:",num2
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> > 	return
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> >
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> 	This function returns None.
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> 	Recommended software design practices are that any thing inside the
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> function should be local to just that function -- a function should be a
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> black box -- you call it with some data, and you obtain some results
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> when it returns; what it does internally should be "invisible" and have
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> no effect on any other code.
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> 	Read:
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> http://en.wikipedia.org/wiki/Coupling_%28computer_programming%29
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> (what you are attempting falls into "content coupling" if you change the
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> use of "module" to "function")
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>=20
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> 	However, Python lets you declare names to be global (to the
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> module/file). This is primarily meant to be used when a function must
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> rebind a module level entity. (This would be "common coupling")
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>=20
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> def func1():
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> 	global num1, num2
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> 	...
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> But, as mentioned, that now makes num1 and num2 names that are known
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> outside the functions.
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> =20
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> > def func2():
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> > 	num3=3Dnum1+num2
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> > 	num4=3Dnum3+num1
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> > 	print "New Number One is:",num3
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> > 	print "New Number Two is:",num4
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> > 	return
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> >=20
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> 	Misleading print statements, as you are NOT changing "number one" or
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> "number two"; you've just created two NEW names (num3, num4).
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>=20
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> > I am preferring not to use argument passing or using class? Is there an=
y alternate way?
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> >
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> 	Well, if you end func1 with
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> 	return num1, num2
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> you can change func2 into:
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>=20
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> def func2():
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> 	n1, n2 =3D func1()
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> 	num3 =3D n1 + n2
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> 	num4 =3D num3 + n1
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> ...
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> --=20
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> 	Wulfraed                 Dennis Lee Bieber         AF6VN
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>         wlfraed@ix.netcom.com    HTTP://wlfraed.home.netcom.com/

Dear Group,
Absolutely brilliant, Ramit.  Dennis also came with almost same answer.  Us=
ing global may not give clean results everytime.=20

I wanted to say,=20
>>> def func1():
	num1=3D10
	num2=3D20
	print "The Second Number is:",num2

=09
>>> def func2():
	func1()
	num3=3D50
	print "The New Number is:",num3

>>> func2()
The Second Number is: 20
The New Number is: 50
The post went slightly wrong sorry.=20
No, I experiment myself on idle evenings to experiment with coding etc so I=
 think of problems, practice on them and try to see if any better code evol=
ves. Nothing else. I posted and Steve did not comment perhaps never happens=
. He rebukes me so much from my early days here, I just enjoy it.

Regards and best wishes,
Subhabrata.=20