[Tutor] passing results between functions

[Gerhardus Geldenhuis]

Hi
I wrote two functions which does different manipulations on text files.

To start out with I passed the filename as a parameter and each function
opened the file and saved it.

I then realized I would need to do that twice if I wanted to use both my
functions on the same file. I the modified the functions to take the input
as follows:
myfunction(open(sys.argv[1]),'ro'))

It still wasn't good enough so I modified the function to return data as
follows:

def myfunction
returndata = []
# some code
...
  return ''.join(returndata)

so now I can do myfunction(mysecondfunction(sys.argv[1],'ro'))
or mysecondfunction(myfunction(sys.argv[1],'ro'))

so my question is philosophical. Is that the pythonian way or is there a
better/easier/more efficient way to pass data?

To be honest I am still a bit stuck in how I did things when I programmed
in Delphi years ago and trying to make the paradigm shift and understanding
the data structures.

Regards

-- 
Gerhardus Geldenhuis
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