Solution for task: http://projecteuler.net/problem=7 By listing the first six prime numbers: 2, 3, 5, 7, 11, and 13, we can see that the 6th prime is 13. What is the 10 001st prime number?

get_prime_number.py

#!/usr/bin/env python
# -*- coding: utf-8 -*-

def get_prime_number(index):
    '''
    Return prime number by given index.

    By listing the first six prime numbers: 2, 3, 5, 7, 11, and 13, we can see that the 6th prime is 13.

    Args:
      - index: number, starts from 1 and up

    Example output:
    >>> get_prime_number(10001)
    104743
    '''
    if index < 1:
        raise Exception('Invalid parameter. Please set index to 2 or above')

    prime_numbers = []
    num = 2 # initial prime number

    def check_number(number):
        '''Chek is given number is prime'''
        for x in xrange(2, number):
            if number % x == 0:
                return False
        return True

    while len(prime_numbers) < index:
        if check_number(num):
            prime_numbers.append(num)
        num += 1

    return prime_numbers[index-1]


try:
    index = raw_input("Enter index number: ")
    print get_prime_number(int(index))
except ValueError:
    print "Enter correct number (1 and above)"