Windows paths, Java, and command-line arguments, oh my!

[Neil Benn]

Neil Benn wrote:

>Steve M wrote:
>
>  
>
>>Well, apparently I fried my brain trying to sort this out. There is a
>>typo in my example code in the post but not in my real program. (I know
>>it is a no-no when asking help on c.l.py but I simplified some details
>>    
>>
>>from the real code in order not to confuse the issues. Probably
>  
>
>>backfired by this point.) Below is the post with the error fixed and
>>one sentence added (to clarify why the error in my original post really
>>was not the problem). Thanks for any advice.
>>---
>>I'm trying to invoke a Java command-line program from my Python program
>>on Windows XP. I cannot get the paths in one of the arguments to work
>>right.
>>
>>The instructions for the program describe the following for the
>>command-line arguments:
>>
>>java -jar sforcedataloader.jar -Dsalesforce.config.dir=CONFIG_DIRECTORY
>>
>>They also give an example:
>>
>>java -Dsalesforce.config.dir=c:\config -jar sforcedataloader.jar
>>
>>If I type the example above at the cmd.exe command line the thing works
>>(assuming I have the config file in c:\config). What doesn't work is
>>these two lines:
>>
>>cmd = r'java -jar sforcedataloader.jar
>>-Dsalesforce.config.dir=c:\config'
>>os.system(cmd)
>>
>><snip>
>> 
>>
>>    
>>
>Unless you have fixed your typo in a different place, you have the same 
>problem as before.  There are two issues, you need to escape the 
>backslash and you have the java properties line in the wrong place.  
>Instead of:
>
>cmd = r'java -jar sforcedataloader.jar -Dsalesforce.config.dir=c:\config' 
>os.system(cmd)
>
>use
>
>cmd = r'java -Dsalesforce.config.dir=c:\\config -jar sforcedataloader.jar'
>os.system(cmd)
>
>Neil
>
>  
>
Whoops you are using a raw string - you only need one backslash - the 
java thing is still the same though

Cheers,

Neil