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| def decorator(f): | |
| def f_new(): | |
| print "pre" | |
| f() | |
| print "post" | |
| try: | |
| f.decorated | |
| return f | |
| except AttributeError: | |
| f_new.decorated=True | |
| return f_new | |
| @decorator | |
| def a(): | |
| print "a" | |
| a() | |
| # pre | |
| # a | |
| # post | |
| @decorator | |
| def b(): | |
| print "b" | |
| a() | |
| b() | |
| # pre | |
| # b | |
| # pre | |
| # a | |
| # post | |
| # post |
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