Merge pull request #68 from UoMResearchIT/53-add-items-method-to-spintting-out-keys-and-values

feat: example added for .items() function

Author: Scottan

episodes/02-dictionaries.md

@@ -293,15 +293,15 @@ d.keys()
 ```
 
 ```output
-dict_keys(['alice', 'bob', 'jane', 'tom', 'david'])
+dict_keys(['alice', 'bob', 'jane'])
 ```
 
 ```python
 d.values()
 ```
 
 ```output
-dict_values([12, 18, 24, 54, 87])
+dict_values([12, 18, 24])
 ```
 
 Note that the *dict\_keys* and *dict\_values* objects are iterable but are not lists. This means that they can be used somewhere like a `for` loop but you can not index them directly.
@@ -326,6 +326,30 @@ list(d.values())[0]
 12
 ```
 
+It is also possible to iterate through the keys and items in the dictionary at the same time using the `items` function,
+which returns a *dict\_items* object containing `key, value` pairs:
+
+```python
+d.items()
+```
+
+```output
+dict_items([('alice', 35), ('bob', 18), ('jane', 24)])
+```
+
+This is very useful when using a dictionary in a `for` loop:
+
+```python
+for key, value in d.items():
+    print("Name:", key, " Age:", value)
+```
+
+```output
+Name: alice  Age: 35
+Name: bob  Age: 18
+Name: jane  Age: 24
+```
+
 ## Presence (or not) of an element inside a dictionary
 
 It is possible to test if a key is present in the dictionary (or not) using the keyword `in`, just as we did at the start of this lesson for values within a list: