os.spawnl error

[Salvatore]

Hello,

Does someone already had ths problem ?
[color=blue][color=green][color=darkred]
>>> os.spawnl(os.P_ NOWAIT,'c:\wind ows\notepad.exe ')[/color][/color][/color]
Traceback (most recent call last):
File "<stdin>", line 1, in ?
File "C:\Python24\li b\os.py", line 565, in spawnl
return spawnv(mode, file, args)
OSError: [Errno 22] Invalid argument

Regards

Salvatore

[Larry Bates]

Re: os.spawnl error

The backslashes in your path are being interpreted
as escape characters (e.g. \n is a newline).

Try instead:

os.spawnl(os.P_ NOWAIT,r'c:\win dows\notepad.ex e')

or

os.spawnl(os.P_ NOWAIT,'c:\\win dows\\notepad.e xe')

-Larry Bates


Salvatore wrote:[color=blue]
> Hello,
>
> Does someone already had ths problem ?
>
>[color=green][color=darkred]
>>>>os.spawnl(o s.P_NOWAIT,'c:\ windows\notepad .exe')[/color][/color]
>
> Traceback (most recent call last):
> File "<stdin>", line 1, in ?
> File "C:\Python24\li b\os.py", line 565, in spawnl
> return spawnv(mode, file, args)
> OSError: [Errno 22] Invalid argument
>
> Regards
>
> Salvatore
>[/color]

[Larry Bates]

Re: os.spawnl error

The backslashes in your path are being interpreted
as escape characters (e.g. \n is a newline).

Try instead:

os.spawnl(os.P_ NOWAIT,r'c:\win dows\notepad.ex e')

or

os.spawnl(os.P_ NOWAIT,'c:\\win dows\\notepad.e xe')

-Larry Bates


Salvatore wrote:[color=blue]
> Hello,
>
> Does someone already had ths problem ?
>
>[color=green][color=darkred]
>>>>os.spawnl(o s.P_NOWAIT,'c:\ windows\notepad .exe')[/color][/color]
>
> Traceback (most recent call last):
> File "<stdin>", line 1, in ?
> File "C:\Python24\li b\os.py", line 565, in spawnl
> return spawnv(mode, file, args)
> OSError: [Errno 22] Invalid argument
>
> Regards
>
> Salvatore
>[/color]

[Fredrik Lundh]

Re: os.spawnl error

Salvatore wrote:
[color=blue]
> Does someone already had ths problem ?
>[color=green][color=darkred]
>>>> os.spawnl(os.P_ NOWAIT,'c:\wind ows\notepad.exe ')[/color][/color]
> Traceback (most recent call last):
> File "<stdin>", line 1, in ?
> File "C:\Python24\li b\os.py", line 565, in spawnl
> return spawnv(mode, file, args)
> OSError: [Errno 22] Invalid argument[/color]

that string doesn't contain what you think:
[color=blue][color=green][color=darkred]
>>> print "c:\windows\not epad.exe"[/color][/color][/color]
c:\windows
otepad.exe

you can use "raw" string literals to get around this:
[color=blue][color=green][color=darkred]
>>> os.spawnl(os.P_ NOWAIT, r'c:\windows\no tepad.exe')[/color][/color][/color]

more here:

http://docs.python.org/tut/node5.html#SECTION005120000000000000000

</F>

[Fredrik Lundh]

Re: os.spawnl error

Salvatore wrote:
[color=blue]
> Does someone already had ths problem ?
>[color=green][color=darkred]
>>>> os.spawnl(os.P_ NOWAIT,'c:\wind ows\notepad.exe ')[/color][/color]
> Traceback (most recent call last):
> File "<stdin>", line 1, in ?
> File "C:\Python24\li b\os.py", line 565, in spawnl
> return spawnv(mode, file, args)
> OSError: [Errno 22] Invalid argument[/color]

that string doesn't contain what you think:
[color=blue][color=green][color=darkred]
>>> print "c:\windows\not epad.exe"[/color][/color][/color]
c:\windows
otepad.exe

you can use "raw" string literals to get around this:
[color=blue][color=green][color=darkred]
>>> os.spawnl(os.P_ NOWAIT, r'c:\windows\no tepad.exe')[/color][/color][/color]

more here:

http://docs.python.org/tut/node5.html#SECTION005120000000000000000

</F>

[utabintarbo]

Re: os.spawnl error

I have found the judicious use of os.path.normpat h(path) to be quite
useful as well.

Bob

[utabintarbo]

Re: os.spawnl error

I have found the judicious use of os.path.normpat h(path) to be quite
useful as well.

Bob