How to paste python code on wordpress?

[could ildg]

Wordpress.com <http://Wordpress.com> blog will eat up the spaces before a
line,
just as it will trim every line of my article. So I can't paste python code
indentedly.
Does any one use wordpress blog here?
Please tell me how to leave the sapces as they are when publishing ariticles
on the blog,
Thank you.
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