webbrowser.open works in IDLE and cmd shell but not from cygwin prompt

[Gregory Bloom]

I'm running Python 2.5 under Windows. If I fire up IDLE and enter:

>>import webbrowser
url = 'http://www.python.org'
webbrowser.open_new(url)

it works like a champ, opening the page in Firefox. Same thing goes
from a Windows cmd shell: it works as advertised.

But if I open a cygwin bash shell and try the same thing from a python
prompt, I get:

>>import webbrowser
url = 'http://www.python.org'
webbrowser.open_new(url)

Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "C:\Python25\lib\webbrowser.py", line 60, in open_new
return open(url, 1)
File "C:\Python25\lib\webbrowser.py", line 55, in open
if browser.open(url, new, autoraise):
File "C:\Python25\lib\webbrowser.py", line 185, in open
p = subprocess.Popen(cmdline, close_fds=True, preexec_fn=setsid)
File "C:\Python25\lib\subprocess.py", line 551, in __init__
raise ValueError("close_fds is not supported on Windows "
ValueError: close_fds is not supported on Windows platforms

What's up with that? And, more to the point, how can I use webbrowser
from scripts launched under cygwin?

[Paddy]

On Apr 27, 5:09 am, Gregory Bloom <[e-mail]:

I'm running Python 2.5 under Windows. If I fire up IDLE and enter:

>import webbrowser
url = 'http://www.python.org'
webbrowser.open_new(url)

it works like a champ, opening the page in Firefox. Same thing goes
from a Windows cmd shell: it works as advertised.

But if I open a cygwin bash shell and try the same thing from a python
prompt, I get:

>import webbrowser
url = 'http://www.python.org'
webbrowser.open_new(url)

Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "C:\Python25\lib\webbrowser.py", line 60, in open_new
return open(url, 1)
File "C:\Python25\lib\webbrowser.py", line 55, in open
if browser.open(url, new, autoraise):
File "C:\Python25\lib\webbrowser.py", line 185, in open
p = subprocess.Popen(cmdline, close_fds=True, preexec_fn=setsid)
File "C:\Python25\lib\subprocess.py", line 551, in __init__
raise ValueError("close_fds is not supported on Windows "
ValueError: close_fds is not supported on Windows platforms

What's up with that? And, more to the point, how can I use webbrowser
from scripts launched under cygwin?

I have X and kde for cygwin installed.
If i use startxwin to start an xterm, without starting kde, and do
the
above in cygwins python version 2.4.3 i have to wait around 3 minutes
then up pops konqueror at the requested page.

- Paddy.

[Michael Hoffman]

Gregory Bloom wrote:

I'm running Python 2.5 under Windows. If I fire up IDLE and enter:

>>>import webbrowser
url = 'http://www.python.org'
webbrowser.open_new(url)

it works like a champ, opening the page in Firefox. Same thing goes
from a Windows cmd shell: it works as advertised.

But if I open a cygwin bash shell and try the same thing from a python
prompt, I get:

>>>import webbrowser
url = 'http://www.python.org'
webbrowser.open_new(url)

Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "C:\Python25\lib\webbrowser.py", line 60, in open_new
return open(url, 1)
File "C:\Python25\lib\webbrowser.py", line 55, in open
if browser.open(url, new, autoraise):
File "C:\Python25\lib\webbrowser.py", line 185, in open
p = subprocess.Popen(cmdline, close_fds=True, preexec_fn=setsid)
File "C:\Python25\lib\subprocess.py", line 551, in __init__
raise ValueError("close_fds is not supported on Windows "
ValueError: close_fds is not supported on Windows platforms

What's up with that?

It's not a Cygwin issue, really. This occurs when one of ["firefox",
"firebird", "seamonkey", "mozilla", "netscape", "opera"] is in your
path. Your Cygwin environment must be set so one of these is in your
path when it isn't normally.

You should also submit a bug.

And, more to the point, how can I use webbrowser from scripts launched under
cygwin?

If you're using native Windows Python as you seem to be, try
webbrowser.get("windows-default").open_new(url)

If you want to use Cygwin Python instead, I submitted a patch more than
1.5 years ago to allow it, but it hasn't been reviewed:

http://python.org/sf/1244861
--
Michael Hoffman

[Gregory Bloom]

On Apr 27, 3:12 am, Michael Hoffman <[e-mail]:

And, more to the point, how can I use webbrowser from scripts launched under

cygwin?

If you're using native Windows Python as you seem to be, try
webbrowser.get("windows-default").open_new(url)

If you want to use Cygwin Python instead, I submitted a patch more than
1.5 years ago to allow it, but it hasn't been reviewed:

http://python.org/sf/1244861
--
Michael Hoffman

Awesome! That works perfectly. Thanks.

[Steve Holden]

Gregory Bloom wrote:

On Apr 27, 3:12 am, Michael Hoffman <[e-mail]:

>>And, more to the point, how can I use webbrowser from scripts launched under
cygwin?

If you're using native Windows Python as you seem to be, try
webbrowser.get("windows-default").open_new(url)

If you want to use Cygwin Python instead, I submitted a patch more than
1.5 years ago to allow it, but it hasn't been reviewed:

http://python.org/sf/1244861
--
Michael Hoffman

Awesome! That works perfectly. Thanks.

Interestingly when I tried this under Cygwin I got the links browser
displaying the material from the given URL.

That's different enough that I might keep it like that.:-)

regards
Steve
--
Steve Holden [phone] [phone]
Holden Web LLC/Ltd http://www.holdenweb.com
Skype: holdenweb http://del.icio.us/steve.holden
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