fprintf

Joe Riel — Fri, 13 Jan 2012 02:13:16 Z

Try ?fprintf, with the %q format if you want to include the commas

for j to 5 do
   file := sprintf("P%d.dat", j);
   fprintf(file, "%q\n", op(P[j]));
   close(file);
end do:

Alternative solution

Carlo Carminati — Fri, 13 Jan 2012 10:42:56 Z

Thanks, Joe!

In fact yesterday, after posting my question, I ended up with a naive (but even simpler) solution, namely:
###
for j from 1 to 5 do
writedata(cat("P",j,".dat"),[op(j,P)]):
od;
###

The [] embracing my list make it look like a list of lists, so it works!

MaplePrimes - answers and comments on Question, writedata (on a single line)

fprintf

Alternative solution