Detecting -i in a script

[Marek Szuba]

Hello there,

Is there any way of detecting in a script whether the interpreter
session running it has been launched with the -i option? My Google fu
has failed me on this subject... Thanks in advance.

 

[Chris Rebert]

Hello there,

Is there any way of detecting in a script whether the interpreter
session running it has been launched with the -i option? My Google fu
has failed me on this subject... Thanks in advance.

The sys.flags.interactive bool.

Details: http://docs.python.org/library/sys.html#sys.flags

Cheers,
Chris

 

[Marek Szuba]

The sys.flags.interactive bool.

Details: http://docs.python.org/library/sys.html#sys.flags

Hmm, "New in version 2.6"... Are you aware of any way of extracting
this information in older versions of Python? My code needs to be
2.3-compatible.

 

[Chris Rebert]

I think getopt will help you achieve what you need.
http://docs.python.org/library/getopt.html

A. Please don't top-post. It makes following the conversation more
difficult by presenting it out of chronological order.

B. -i is an option to the Python interpreter *itself*, not the Python
script, and so gets gobbled up before the script even starts, thus
`getopt` won't work. Observe:

chris@morpheus ~ $ cat foo.py
from sys import argv
print argv
chris@morpheus ~ $ python -i foo.py
['foo.py']
Cheers,
Chris

 

[Chris Rebert]

Marek Szuba wrote:


The sys.flags.interactive bool.

Details: http://docs.python.org/library/sys.html#sys.flags

Hmm, "New in version 2.6"... Are you aware of any way of extracting
this information in older versions of Python? My code needs to be
2.3-compatible.

I think getopt will help you achieve what you need.
http://docs.python.org/library/getopt.html

A. Please don't top-post. It makes following the conversation more
difficult by presenting it out of chronological order.

B. -i is an option to the Python interpreter *itself*, not the Python
script, and so gets gobbled up before the script even starts, thus
`getopt` won't work. Observe:

chris@morpheus ~ $ cat foo.py
from sys import argv
print argv
chris@morpheus ~ $ python -i foo.py
['foo.py']

Cheers,
Chris

Thanks for the tip Chris, been away from the newsgroups for a while and bad
habits seem to have crept in.  All in all, a none-to-useful first post to
comp.lang.python, here's hoping for a brighter future.

Can I presume the lack of a solution in your response means, essentially,
prior to 2.6 there's no way of reading from the script that the interpreter
has been launched in interactive mode?

I'm not a (C)Python implementor, so I can't definitively answer that.
The fact that this functionality was added at all does, however, seem
to strongly imply that that is the case.
FWIW, I've scanned over the `sys` module, which would be the obvious
place to put such a feature or its rudiments, and can't find anything
else of use for the task.

Cheers,
Chris