On Tue, 22 Jan 2008 09:56:55 +0000, Robert Latest wrote: > Peter Otten wrote: >> Robert Latest wrote: >> >> This should work then: >> >> def date_key(f): >> return f.mod_date.toordinal() >> flist.sort(key=date_key) >> >> This can also be written as >> >> flist.sort(key=lambda f: f.mod_date.toordinal()) > > Well, that's almost Paul's (non-working) suggestion above, but it works > because of the parentheses after toordinal. Beats me how both versions can > be valid, anyway. > > To me it's all greek. I grew up with C function pointers, and they > always work. > > robert
Suppose `func` is a C function pointer, then foo = func; and foo = func(); have different meanings. It's just the same in Python. First is the function itself, second *calls* the function. Ciao, Marc 'BlackJack' Rintsch -- http://mail.python.org/mailman/listinfo/python-list