John Machin wrote: > tom wrote: > >> Why Tea wrote: >> >>> print format % values >>> An optional minimum width of the conversion, specified using one or >>> more digits or an asterisk (*), which means that the width is taken >>> from the next item in values >>> >>> That's from one of O'reilly's books. But there is no example and I >>> couldn't get it to work by trials and errors. Does anyone have a >>> working example? >>> >>> /Why Tea >>> >>> >>> >> value = 3.141592654 >> print "%1.3f" % value >> > > Please consider reading the subject of a message occasionally :) >
Sorry bout that ! > | >>> value = 3.141592654 > | >>> print "%1.3f" % value > | 3.142 > | >>> print "%10.3f" % value > | 3.142 > | >>> print "%*.3f" % (1, value) > | 3.142 > | >>> print "%*.3f" % (10, value) > | 3.142 > | >>> for n in range(11): > | ... print "%*.3f" % (n, value) > | ... > | 3.142 > | 3.142 > | 3.142 > | 3.142 > | 3.142 > | 3.142 > | 3.142 > | 3.142 > | 3.142 > | 3.142 > | 3.142 > | >>> > >> there you go :) >> > > There *you* go :) > > >> look at printf in c for general ideas about the format >> specifiers >> > > Unfortunately this is about the same advice as given by the official > Python tutorial: > > """Most formats work exactly as in C [snip] Using * to pass the width > or precision in as a separate (integer) argument is supported""" > > Not quite so many folks come to Python with a background in C these > days. Is anyone aware of a tutorial that covers % formatting from a > standing start? > > If you're on a unix system you can probably do `man fprintf`, but it will mean wading through a lot of stuff you're no interested in. This has a good little section on it though, specifically for python http://rgruet.free.fr/PQR24/PQR2.4.html > Cheers, > John > > -- http://mail.python.org/mailman/listinfo/python-list
