Updates 20170628.md

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20170628.md

@@ -1,6 +1,6 @@
 ### 內建函數 item\(\)
 
-th`items()`function doesn't return key/value pairs in any specific order. 
+th`items()`function doesn't return key/value pairs in any specific order.
 
 ```python
 my_dict = {
@@ -11,7 +11,7 @@ my_dict = {
 print my_dict.items()
 ```
 
-\[\( 'Age', 20\), \( 'Name', 'Jiayi' \), \( 'height' , 155\) \] 
+\[\( 'Age', 20\), \( 'Name', 'Jiayi' \), \( 'height' , 155\) \]
 
 ---
 
@@ -32,9 +32,9 @@ print my_dict.keys()
 print my_dict.values()
 ```
 
-   \['Name', 'Age', 'height' \]
+\['Name', 'Age', 'height' \]
 
-  \['Jiayi', 20, 155 \]
+\['Jiayi', 20, 155 \]
 
 ---
 
@@ -51,11 +51,11 @@ for key in my_dict:
 print key, my_dict[key]
 ```
 
-Age 20 
+Age 20
 
 Name Jiayi
 
-height 155   
+height 155
 
 ```python
 for letter in 'JIAYI':
@@ -124,6 +124,26 @@ print to_five[::2]
 # print ['A', 'C', 'E']
 ```
 
+```python
+my_list = range(1, 11) # List of numbers 1 - 10
+print my_list[0::]
+print my_list[::2]
+```
+
+\[1, 2, 3, 4, 5, 6, 7, 8, 9, 10\]
+
+\[1, 3, 5, 7, 9\]
+
+### Reversing a List
+
+```python
+my_list = range(1, 11)
+backwards =  my_list[::-1]
+print backwards
+```
+
+\[10, 9, 8, 7, 6, 5, 4, 3, 2, 1\]
+