vb.net - Why does python produce a "memory error" error when calculating x > 1x10^8 primes -


i have used vb.net make equivalent program python one

from colorama import init , fore   init ( autoreset = true, convert = true)  first = 0 second = 1  print(first) print(second)  def primes ( temp ) :      loopcount in range ( 2 , temp ) :         if (temp % loopcount) == 0 :             return false      return true   while true :     temp = first + second     first = second     second = temp      if primes ( temp ) == true :         print(fore.red + str(temp))      else :        print(temp)      raw_input("")

and found vb.net greater 1x10^300 whereas python can't keep beyond 1.02x10^8. don't understand why thought python great numbers , number crunching.

fyi: colorama cross platform python library allowing colouring of text in console

your program crashes because used range when wanted xrange.

quoting doc:

this function similar range(), returns xrange object instead of list. opaque sequence type yields same values corresponding list, without storing them simultaneously. advantage of xrange() on range() [occurs when] large range used on memory-starved machine

try instead:

for loopcount in xrange ( 2 , temp ) :

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