Is this just for readability to the developer? python

[David Stockwell]

Hi,

I was looking through some of our source code and I found this:

initModule( "$Revision: 3.1 $".split(" ")[1] )

In this example, it looks like only the '3.1' is actually passed to the
function. Which leads me to speculate that the rest of it is just there to
make it easier for the developer when looking at source code to see what
version of the module is being used.

The only thing I think i notice is its also passing a list of one element?

Is this a typical way to do this in python?

Thanks

David
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[Richard Brodie]

In this example, it looks like only the '3.1' is actually passed to the
function. Which leads me to speculate that the rest of it is just there to
make it easier for the developer when looking at source code to see what
version of the module is being used.

It looks like that it may be for the benefit of CVS; manually updated
version numbers are a pain.

The only thing I think i notice is its also passing a list of one element?

One element of a list; that's not quite the same thing.

 

[Mel Wilson]

I was looking through some of our source code and I found this:

initModule( "$Revision: 3.1 $".split(" ")[1] )

In this example, it looks like only the '3.1' is actually passed to the
function. Which leads me to speculate that the rest of it is just there to
make it easier for the developer when looking at source code to see what
version of the module is being used. [ ... ]

To amplify David Brodie's answer:

The string "$Revision: 3.1 $" is probably supplied by
CVS, the Concurrent Versioning System, and that literal in
that line of the program changes every time the Python
module is checked into change control. You're really
looking at a slick way to communicate between CVS and the
module user.

Regards. Mel.

 

[Peter Hansen]

I was looking through some of our source code and I found this:

initModule( "$Revision: 3.1 $".split(" ")[1] )

In this example, it looks like only the '3.1' is actually passed to the
function. Which leads me to speculate that the rest of it is just there
to make it easier for the developer when looking at source code to see
what version of the module is being used.

Revision control systems such as CVS and Subversion know how to
find and update information such as the revision tag when it is
formatted in that manner (leading/trailing $ etc). The programmer
also apparently thought it would be a good idea to use the revision
number programmatically, which explains the surrounding split()
and indexing operations, and the function call.

-Peter