Howto Launch a windows application ?

[stef mientki]

Yu-Xi Lim wrote:
> stef mientki wrote:
>   
>> cmd =[]
>> cmd.append ( 'D:\\PIC-tools\\JALxxx\\jalv2_3.exe' )
>> cmd.append ( '-long-start' )
>> cmd.append ( '-d')
>> cmd.append ( '-clear' )
>> cmd.append ( '-sD:\\PIC-tools\\JAL\\libs2' )
>> cmd.append ( 
>> 'd:\\pic-tools\\jal\\programs\\test_rs232\\test_rs232_hw.jal' )
>> cmd.append ( '>d:\\data_actueel\\d7_test_browser\\temp.log' )
>>     
>
> Your problem is probably the last line there with the '>'. That's an 
> output redirection that is done not by jalv2_3.exe but by the command 
> shell. That's why it works only with the batch file (which is 
> interpreted by the command shell.
>
>   
No that's not the problem,
leaving the redirection away,
gives the same problems.

> Using a batch file is probably easiest for this.
I think indeed  that's he simplest solution.
Still wonder why launching a windows program is "so difficult" in python 
;-)

thanks,
Stef Mientki
>  But I'm guessing you 
> probably want to change the command line arguments passed to the program 
> that's why you prefer to build the command line manually.
>
> In that case, there are a few solutions:
> 1) Generate the batch file programmatically.
> 2) Use cmd.exe /C (assuming you're on Windows XP). So your program would 
> be something like:
> cmd.append('cmd.exe')
> cmd.append('/C')
> cmd.append('"D:\\PIC-tools\\JALxxx\\jalv2_3.exe -long-start -d -clear 
> -sD:\\PIC-tools\\JAL\\libs2 
> d:\\pic-tools\\jal\\programs\\test_rs232\\test_rs232_hw.jal 
>  >d:\\data_actueel\\d7_test_browser\\temp.log"')
> (or something like that)
> 3) Do the redirection yourself. Remove the line:
>   cmd.append ('>d:\\data_actueel\\d7_test_browser\\temp.log' )
> and instead read the results directly from the Popen.stdout. You can 
> then write the output to a file if you want.
>