1 files changed, 21 insertions, 8 deletions
diff --git a/python.html.markdown b/python.html.markdown
index 0bd16a80..0b115c4e 100644
--- a/python.html.markdown
+++ b/python.html.markdown
@@ -85,12 +85,24 @@ False - 5   # => -5
 2 == True   # => False
 -5 != False # => True
 
-# Using boolean logical operators on ints casts them to booleans for evaluation, but their non-cast value is returned
-# Don't mix up with bool(ints) and bitwise and/or (&,|)
+# None, 0, and empty strings/lists/dicts/tuples/sets all evaluate to False.
+# All other values are True
 bool(0)     # => False
+bool("")    # => False
+bool([])    # => False
+bool({})    # => False
+bool(())    # => False
+bool(set()) # => False
 bool(4)     # => True
 bool(-6)    # => True
+
+# Using boolean logical operators on ints casts them to booleans for evaluation, but their non-cast value is returned
+# Don't mix up with bool(ints) and bitwise and/or (&,|)
+bool(0)     # => False
+bool(2)     # => True
 0 and 2     # => 0
+bool(-5)    # => True
+bool(2)     # => True
 -5 or 0     # => -5
 
 # Equality is ==
@@ -153,13 +165,14 @@ None  # => None
 "etc" is None  # => False
 None is None   # => True
 
-# None, 0, and empty strings/lists/dicts/tuples all evaluate to False.
+# None, 0, and empty strings/lists/dicts/tuples/sets all evaluate to False.
 # All other values are True
-bool(0)   # => False
-bool("")  # => False
-bool([])  # => False
-bool({})  # => False
-bool(())  # => False
+bool(0)     # => False
+bool("")    # => False
+bool([])    # => False
+bool({})    # => False
+bool(())    # => False
+bool(set()) # => False
 
 ####################################################
 ## 2. Variables and Collections