replacing batch file with python script

[SeeBelow at SeeBelow.Nut]

I have not been able to find a simple way to have a python script
execute an MS-DOS program repeatedly.  execv(), for example, won't run
it more than once.  I have been using many lines of a .bat file, like
so:

.
.
.
del xyz
myexec 1 2
del xyz 
myexec 1 2
.
.
.

where myexec is an executable program that I want to run many times.  I
would like to replace the repeated batch file lines with a python loop.
There must be an easy way to do that, no?  else why is Python called a
scripting language.

Thanks

Mitchell Timin

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