Equals (==), inequality (!=)

• The only comparison operator that can be used cross type, but only with None
• Equal comparisons between different types that are not None will always result in a crash, e.g. int(2) == dec(2)
• Not equal comparisons between different types that are not None will always result in a cresh, e.g. int(2) != dec(2)
• Equal comparisons on any non-None value with None will always be False
• Not equal comparisons on any non-None value with None will always be True
• Can not be chained

Less than (<), greater than (>), less than or equal to (<=), greater than or equal to (>=)

• Does not work for dict and function types
• For strings, the comparison is alphabetical
• For lists, it compares items on an item-to-item basis
• Will fail on root level type mismatches (elements will not be ducked-typed into comparisons)
• Can not be chained

in and has

• Checks to look for a value inside a list or inside the keys of a dictionary
• One side of the operator must be a list value to look for, the other side must be a list
• Order does not matter
• The list must all contain elements of the same type
• Can not be chained