Re: Return variables from modules ??
From: Dave Kuhlman (dkuhlman_at_rexx.com)
Date: 10/21/03
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Date: Tue, 21 Oct 2003 14:38:05 -0700
Rigga wrote:
> Hi,
>
> I am new to Python and am currentky just playing with some simple
> functions however I can not work out how to return a variable back
> from a module, probably easier if you see the code.. what I want
> it to do is to repeat the while loop until it is no longer equal
> to 'repeat', code is below, go easy on me!:
>
===========================================================================
> import sys import os
> # Check that the folder is accessible and writeable
> reply = 'repeat'
> while reply == 'repeat' :
> FilePath = raw_input("Enter path to files: ")
>
> def chkpth(FilePath):
>
> if os.path.exists(FilePath):
> # File location exists
> AccFlag = os.access(FilePath,os.R_OK |
> os.X_OK | os.W_OK)
>
> if (AccFlag):
> # Cool you have FULL access to
> # the location
> chkpth = "OK"
> reply = 'stop'
> else:
> # You do not have access
> chkpth = "DENIED"
> reply = 'repeat'
>
> else:
> # No files found exiting...
> chkpth = "NOT FOUND"
> reply = 'repeat'
>
> return chkpth
>
> print chkpth(FilePath) # used to show me chkpth result
> print reply # always prints repeat no matter what!
> sys.exit()
>
>
==============================================================================
>
> I have tried setting reply as a global variable but to no avail, I
> assume that I need to pass the variable back from the chkpth
> module but I do not know how to, any help appreciated.
>
A common way to do this is to put the code in your module into a
function (in that module) and at the end of that function, return
a value. Then do:
import mymodule
reply = mymodule.myfunction()
And, here is how you might modify your module:
===========================================================================
import sys
import os
# Check that the folder is accessible and writeable
def myfunction():
reply = 'repeat'
while reply == 'repeat' :
FilePath = raw_input("Enter path to files: ")
def chkpth(FilePath):
if os.path.exists(FilePath):
# File location exists
AccFlag = os.access(FilePath,os.R_OK |
os.X_OK | os.W_OK)
if (AccFlag):
# Cool you have FULL access to
# the location
chkpth = "OK"
reply = 'stop'
else:
# You do not have access
chkpth = "DENIED"
reply = 'repeat'
else:
# No files found exiting...
chkpth = "NOT FOUND"
reply = 'repeat'
return chkpth
print chkpth(FilePath) # used to show me chkpth
result
print reply # always prints repeat no matter what!
return reply
==============================================================================
Dave
-- Dave Kuhlman http://www.rexx.com/~dkuhlman dkuhlman@rexx.com
- Next message: Erik Max Francis: "Re: <> and DeprecationWarning"
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- In reply to: Rigga: "Return variables from modules ??"
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