Since the Sandbox is unavailable, revise as example

Start to address Issue # 106 CiscoDevNet/learning-labs-issues#106

Author: agentlecisco

labs/coding-201-parsing-xml/1.md

@@ -1,7 +1,6 @@
 # Coding 201: Parsing XML using Python  
 
-In this Learning Lab, you learn the basics of parsing XML content using Python. You will query [CMX Mobility Services](https://developer.cisco.com/site/cmx-mobility-services/ "CMX Mobility Services") data for available access points and put their names into a simple list for display. To learn more about CMX, review the [Mobility Services Engine (MSE) Learning Lab](lab/cmx/step/1).
-
+In this Learning Lab, you learn the basics of parsing XML content using Python. The example runs a query on [CMX Mobility Services](https://developer.cisco.com/site/cmx-mobility-services/ "CMX Mobility Services") data for available access points and put their names into a simple list for display. To learn more about CMX, review the [Mobility Services Engine (MSE) Learning Lab](lab/cmx/step/1).
 
 ## Objectives
 
@@ -20,49 +19,48 @@ For this lab, use Python 3.4+. If you are on a DevNet Zone station, the correct
 python --version
 ```
 
-## Step 1: Make an HTTP REST call with Python
+## Example: Make an HTTP REST call with Python
+
+> **Note**: The example uses a CMX MSE Server, where you would need to have access to one and substitute here. 
 
-To get started, create a simple Python script that sends an HTTP request to the CMX MSE Server.
+To get started, this walk-through shows creating a simple Python script that sends an HTTP request to a CMX MSE Server.
 
-1. Open the text editor and create a file named `get-ap-xml.py`.
-2. Save `get-ap-xml.py` to the computer.
-3. Within the text editor add the following lines to `get-ap-xml.py`:
+Example `get-ap-xml.py` file:
 ```
 from urllib.request import Request, urlopen
-req = Request('https://cmxlocationsandbox.cisco.com/api/contextaware/v1/maps/info/DevNetCampus/DevNetBuilding/DevNetZone')
+req = Request('https://<ServerURLorIPAddress>/api/contextaware/v1/maps/info/DevNetCampus/DevNetBuilding/DevNetZone')
 req.add_header('Authorization', 'Basic bGVhcm5pbmc6bGVhcm5pbmc=')
 response = urlopen(req)
 responseString = response.read().decode("utf-8")
 print(responseString)
 response.close()
 ```
 
-  This snippet:
+  This snippet shows:
   	-  Importing the required `Request` and `urlopen` libraries.
   	-  Constructing a request to the CMX URI.
   	-  Adding basic authentication to your Request.
   	-  Opening the request and getting a response back from the CMX URI.
-  	-  Parsing the response as a string and printing it to the console.<br/>
-<br/>
+  	-  Parsing the response as a string and printing it to the console.    
+
+To download or review the current code, you can get it from GitHub <a href="https://github.com/CiscoDevNet/coding-skills-sample-code/blob/master/coding201-parsing-xml/get-ap-xml-1.py" target="_blank">here</a>.
 
-4. Save the `get-ap-xml.py` file. To download or review the current code, you can get it from GitHub <a href="https://github.com/CiscoDevNet/coding-skills-sample-code/blob/master/coding201-parsing-xml/get-ap-xml-1.py" target="_blank">here</a>.
-5. Open a command prompt.<br/><br/>
-If your are using the Windows OS, enter the following command into the command prompt window to move to your computer:
+If you are using Windows, enter the following command into the command prompt window to move to your computer:
 ```
 cd %USERPROFILE%\Desktop
 ```
 If you are using OS X, enter the following command into the terminal to move to your computer:
 ```
 cd ~/Desktop
 ```
-6. In the command prompt window, enter the following command:
+In the command prompt window, enter the following command:
 ```
 python get-ap-xml.py
 ```
-Note: On OS X, to use Python 3.4, you may need to enter `python3.4 get-ap-xml.py`. If you get errors, verify the version of python and double-check the code.
-<br/>
-<br/>
-7. When you run the Python script, the terminal should display a screen full of XML data.
+
+> **Note**: On OS X, to use Python 3.4, you may need to enter `python3.4 get-ap-xml.py`. If you get errors, verify the version of python and double-check the code.
+
+When you run the Python script, the terminal displays a screen full of XML data.
 
 ![](assets/images/xml-output.png)