writing to a binary file without intervening spaces

[Larry]

Thanks to all those who responded to this query.

It seems to me that Python always add intervening spaces between data
elements when writing to a file. Even with tostring() of numpy, array
elements get separated by space character. I like the output of
sys.stdout.write(file) to be writen as is to a binary file, but how?

I'll try your suggestions.

Good luck, especially to me! :)