script vs inneractive

[Alex Pavluck]

I am a little confused because I write most of my programs in a script
editor but not all the code executes unless I run it from the
inneractive shell. Am I doing something wrong? A good example is
"return 1" in a script returns nothing where as in the inneractive
shell it will return 1 or true.

 

[vbgunz]

the interactive shell will immediatly show the result of an expression
without you having to explicitly print the result. In all text editor,
you will have to print the result if you wish to see it.

 

[Dennis Lee Bieber]

I am a little confused because I write most of my programs in a script
editor but not all the code executes unless I run it from the
inneractive shell. Am I doing something wrong? A good example is
"return 1" in a script returns nothing where as in the inneractive
shell it will return 1 or true.

An interpreter shell also shows you the result of expressions, like
a calculator...

4 + 5

will display 9.

This is simply a convenience feature. Formal scripts/programs
display only what has been commanded (print statement, sys.stdout.write,
etc.).

If that "return 1" is the last line in the program, at the most it
will be treated as a return code to the OS signaling that the program
succeeded or failed. I'm not really sure how Python handles a return
from main program.

--
Wulfraed Dennis Lee Bieber KD6MOG
(e-mail address removed) (e-mail address removed)
HTTP://wlfraed.home.netcom.com/
(Bestiaria Support Staff: (e-mail address removed))
HTTP://www.bestiaria.com/

 

[Robert Kern]

If that "return 1" is the last line in the program, at the most it
will be treated as a return code to the OS signaling that the program
succeeded or failed. I'm not really sure how Python handles a return
from main program.

It's a syntax error.

--
Robert Kern

"I have come to believe that the whole world is an enigma, a harmless enigma
that is made terrible by our own mad attempt to interpret it as though it had
an underlying truth."
-- Umberto Eco