[Tutor] Re: Printing a formatted list (of lists)
Tue, 30 Jul 2002 09:00:12 +0530
On Mon, 29 Jul 2002 Allyn Weaks spewed into the ether:
> Python 2.n on unix.
> I have a table that's a list of lists (values can be mixed
> numbers/text). Is there a clean way to print a formatted list? What I
> have works, but it seems that there ought to be a more list-oriented
> way of formatting the list part. Or is this one of those places where
> one accepts the explicit loop? I've tried out list comprehension
> variations 'til I'm dizzy with nothing but assorted errors.
> for j in range(len(table)):
> print `table[j]`.rjust(columnwidth),
How about this :
def print_list (list_of_lists) :
column_width = 8
separator = ","
line_break = "\n"
out_str = ""
## Explicit loop
## This makes it clearer than when list comprehension
## is used, IMHO.
for inner_list in list_of_lists :
for l in inner_list :
## The str() function will convert all values
## be it numbers/text, into the corresponding
## string form.
out_str += str(l).rjust(column_width) + separator
## Adds the line break
out_str += line_break
if __name__ == "__main__":
l = [ [1,2,3,complex(1,1)], [5,6,7,8.12], [10,11,12,"string"] ]
Prahlad Vaidyanathan <http://www.symonds.net/~prahladv/>
The beauty of a pun is in the "Oy!" of the beholder.