When I tried to run a script(just double-clicked it) with 
Python
2.4 on Win 2000, I ran into an error message:

  C:\WINNT\system32\cmd.exe /c test.py
  Unknown option: -n
  usage: C:\Python24\python.exe [option] ... [-c cmd | 
file | -] [arg] ...
  Try `python -h' for more information.
  shell returned 2
  Hit any key to close this window...

The problem seems to be the associations of Python 
related file
types.

In this case, "Python file" (Extension is ".py") is 
associated
with two actions:
-  Edit with IDLE
-  open            (default)

If you look at the "Application used to perform action" 
text box
of 'open', you can see:
  "C:\Python24\python.exe" -n -e "%1"

But neither -n nor -e is a valid option for python.exe and 
it
results in an error message. These options are for IDLE!
Line #1016 to #1020 of mis.py may be relevant to this.

# Tools/msi/mis.py

  # add_data(db, "MIME") XXX
  add_data(db, "Verb",
          [("py", "open", 1, None, r'-n -e "%1"'),
          ("pyw", "open", 1, None, r'-n -e "%1"'),
          ("pyc", "open", 1, None, r'-n -e "%1"'),
          ("pyo", "open", 1, None, r'-n -e "%1"')])

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Python 2.4 has not been released yet. What precisely have
you been using?

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He's using the 2.4a3 just released; a number of reports like 
this appeared on c.l.py soon after the release, and George 
was the first to do the right thing about it <wink>.

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Sorry for not being clearer.
I meant Python 2.4a3 by Python 2.4.

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Thanks for your report. I have re-rolled the package, and
Anthony has made it available from 

http://www.python.org/ftp/python/2.4/python-2.4a3.2.msi

I will commit the changes to msi.py shortly.
I have left the Itanium installer untouched - Itanium users
will either fix the extensions themselves, or wait for 2.4b1.

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Hi, Martin.

Your fix doesn't look enough for me.
I tried a new installer but noticed that all command-line 
argumetns(install, --help, etc) are ignored.

I think adding %* after "%1" is necessary.

Then the file association to *.py files looks like:
  "C:\Python24\python.exe" "%1" %*
or
  "C:\Python24\python.exe" -console "%1" %*   # CVS HEAD

Thanks in advance.

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I see. Until yesterday, I didn't even know you can use the
open verb in contexts other than double-clicking.

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This should be fixed in msi.py 1.10. Please try the installer at

http://www.dcl.hpi.uni-potsdam.de/home/loewis/python-2.4a3.3.msi

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Looks fine to me.

FWI, the new installer made the associations on my PC as 
follows:

"C:\Python24\pythonw.exe" "C:\Python24\Lib\idlelib\idle.pyw" -
n -e "%1"

- py(Edit with Idle)
- pyw(Edit with Idle)

"C:\Python24\pythonw.exe" "%1"  %*

- py(open)
- pyc(open)
- pyo(open)
- pyw(open)


Many thanks for your work.