Merge pull request #84 from liam-m/master

Implement is_prime in Python

Author: blakeembrey

prime-number/prime-number.py

@@ -0,0 +1,13 @@
+from math import sqrt
+
+def is_prime(n):
+    if n <= 1:
+        return False
+    elif n == 2:
+        return True
+    elif n % 2 == 0:
+        return False
+    for i in xrange(3, int(sqrt(n))+1, 2):
+        if n % i == 0:
+            return False
+    return True