Reorganize snippets

python/s/is-even.md

@@ -0,0 +1,23 @@
+---
+title: Number is even
+type: snippet
+language: python
+tags: [math]
+unlisted: true
+cover: interior-3
+dateModified: 2021-01-04T12:47:04+02:00
+---
+
+Checks if the given number is even.
+
+- Check whether a number is odd or even using the modulo (`%`) operator.
+- Return `True` if the number is even, `False` if the number is odd.
+
+```py
+def is_even(num):
+  return num % 2 == 0
+```
+
+```py
+is_even(3) # False
+```