On Wed, Jul 17, 2013 at 1:21 PM, Hasit Mistry <hasi...@lavabit.com> wrote: > I came across a problem that requires me to store a very large number (say >>10^100). How do I do it efficiently?
Both the int and Decimal types support arbitrary precision. Floats do not. > And also, how do I select a particular number (say 209th) from that very > large number? You mean a particular digit? The most obvious way is to format it as a string and use indexing. >>> x = 2 ** 1000 >>> str(x)[208] '6' Or using arithmetic: >>> (x // 10 ** 208) % 10 5 Note that the first method counts digits from the left and will be off if the value is negative, while the second method counts digits from the right. -- http://mail.python.org/mailman/listinfo/python-list
