initial

lib.py

@@ -0,0 +1,26 @@
+#!/usr/bin/env python3
+import math
+
+
+# yes it will report 2,3,5 as non-prime
+# though why add a check if it will never be tested anyway
+def is_prime(num):
+    if isinstance(num, str):
+        num = int(num)
+    if num & 1 and num % 5 > 0:
+        for i in range(2, math.floor(math.sqrt(num)) + 1):
+            if i & 1 and (num % i) == 0:
+                return False
+        return True
+    return False
+
+
+def rev(num):  # or int(str(num)[::-1])
+    if isinstance(num, str):
+        num = int(num)
+    revs = 0
+    while (num > 0):
+        remainder = num % 10
+        revs = (revs * 10) + remainder
+        num = num // 10
+    return revs