snake_case all the things

project_euler/problem_10/sol1.py

@@ -0,0 +1,38 @@
+from __future__ import print_function
+from math import sqrt
+
+try:
+	xrange			#Python 2
+except NameError:
+	xrange = range	#Python 3
+
+def is_prime(n):
+	for i in xrange(2, int(sqrt(n))+1):
+		if n%i == 0:
+			return False
+
+	return True
+
+def sum_of_primes(n):
+	if n > 2:
+		sumOfPrimes = 2
+	else:
+		return 0
+
+	for i in xrange(3, n, 2):
+		if is_prime(i):
+			sumOfPrimes += i
+
+	return sumOfPrimes
+
+if __name__ == '__main__':
+	import sys
+
+	if len(sys.argv) == 1:
+		print(sum_of_primes(2000000))
+	else:
+		try:
+			n = int(sys.argv[1])
+			print(sum_of_primes(n))
+		except ValueError:
+			print('Invalid entry - please enter a number.')