Add data structure comparison table

README.md

@@ -80,6 +80,7 @@ written correctly.
     - [Sets](src/data_types/test_sets.py) and their methods
     - [Dictionaries](src/data_types/test_dictionaries.py)
     - [Type Casting](src/data_types/test_type_casting.py)
+    - [Data Structures Comparison](src/data_types/data_structures_comparison.md)
 4. **Control Flow**
     - [The `if` statement](src/control_flow/test_if.py)
     - [The `for` statement](src/control_flow/test_for.py) (and `range()` function)

src/data_types/data_structures_comparison.md

@@ -0,0 +1,17 @@
+* Changeble: can add or remove items after the collection has been created
+* Indexed: first item has index [0], the second item has index [1] and so on
+* Ordered: items have a defined order, and that order will not change
+* Allow Duplicates: the collection can have items with the same value
+
+
+|                   | dictionary    | set   | list   | tuple   |
+|-------------------|---------------|-------|--------|---------|
+| Initializer       | { key:value } | { }   | [ ]    | ( )     |
+| Changeble?        | yes           | no¹   | yes    | no      |
+| Indexed?          | yes²          | no    | yes    | yes     |
+| Ordered?          | no            | no    | yes    | yes     |
+| Allow Duplicates? | no            | no    | yes    | yes     |
+
+¹ can add new items
+
+² indexed through keys