diff --git a/native-datatypes.html b/native-datatypes.html
index 3edd3b7..50a2b35 100644
--- a/native-datatypes.html
+++ b/native-datatypes.html
@@ -426,11 +426,11 @@ IndexError: pop from empty list
... else:
... print('no, it's false')
...
->>> is_it_true([]) ②
+>>> is_it_true([]) ①
no, it's false
->>> is_it_true(['a']) ③
+>>> is_it_true(['a']) ②
yes, it's true
->>> is_it_true([False]) ④
+>>> is_it_true([False]) ③
yes, it's true
- In a boolean context, an empty list is false.
@@ -650,6 +650,29 @@ KeyError: 21
-
+Sets In A Boolean Context
+
+You can use sets in a boolean context, such as an if statement.
+
+
+>>> def is_it_true(anything):
+... if anything:
+... print('yes, it's true')
+... else:
+... print('no, it's false')
+...
+>>> is_it_true(set()) ①
+no, it's false
+>>> is_it_true({'a'}) ②
+yes, it's true
+>>> is_it_true({False}) ③
+yes, it's true
+
+- In a boolean context, an empty set is false.
+
- Any set with at least one item is true.
+
- Any set with at least one item is true. The value of the items is irrelevant.
+
+
⁂
Dictionaries