Added Python code snippets

snippets/python3.md

@@ -0,0 +1,100 @@
+# Step 0: Install Node.js
+Download and install the [Python](https://www.python.org/downloads/), then install the [Requests](https://requests.readthedocs.io/en/latest/) library from python [package manager](https://pypi.org/project/requests/) then you are ready to run the below code snippets.
+
+# Step 1: Requesting resources
+```py
+import requests
+
+serviceRoot = "http://services.odata.org/v4/TripPinServiceRW/"
+response    = requests.get(serviceRoot +"People")
+status_code = response.status_code
+
+message, body = ("Success: ", str(response.json())) if status_code == 200 else ("Error: ", response.text)
+print( message + str(status_code) + "\n" + body)
+```
+# Step 2: Requesting an individual resource
+```py
+import requests
+
+serviceRoot = "http://services.odata.org/v4/TripPinServiceRW/"
+response = requests.get(serviceRoot + "People('russellwhyte')")
+status_code = response.status_code
+
+message, body = ("Success: ", str(response.json())) if status_code == 200 else ("Error: ", response.text)
+print( message + str(status_code) + "\n" + body)
+```
+# Step 3: Queries
+```py
+import requests
+
+serviceRoot = "http://services.odata.org/v4/TripPinServiceRW/"
+response = requests.get(serviceRoot + "People?$top=2 & $select=FirstName, LastName & $filter=Trips/any(d:d/Budget gt 3000)")
+status_code = response.status_code
+
+message, body = ("Success: ", str(response.json())) if status_code == 200 else ("Error: ", response.text)
+print( message + str(status_code) + "\n" + body)
+```
+# Step 4: Creating a new resource
+```py
+import requests
+
+serviceRoot = "https://services.odata.org/v4/TripPinServiceRW/(S(xbn3udfvj11w1prdix00w5fc))/People"
+
+headers = {
+        'OData-Version': '4.0',
+        'Content-Type': 'application/json;odata.metadata=minimal',
+        'Accept': 'application/json',
+}
+
+newPerson = {
+    "UserName": "shanmugaraj",
+    "FirstName": "Shanmuga",
+    "LastName": "Raj",
+    "Gender": "Male",
+    "Emails": [ "raj@example.com" ],
+    "AddressInfo": [
+        {
+            "Address": "1 Suffolk Ln.",
+            "City": {
+                "CountryRegion": "United States",
+                "Name": "Boise",
+                "Region": "ID"
+            }
+        }
+    ]
+}
+
+response = requests.post(serviceRoot, headers=headers, json=newPerson)
+status_code = response.status_code
+
+message, body = ("Success: ", str(response.json())) if status_code == 201 else ("Error: ", response.text)
+
+print( message + str(status_code) + "\n" + body)
+```
+# Step 5: Relating resources
+```py
+import requests
+
+serviceRoot = "http://services.odata.org/v4/TripPinServiceRW/"
+
+payload = {
+    "@odata.id": "http://services.odata.org/V4/TripPinServiceRW/People('russellwhyte')/Trips(0)"
+}
+
+response = requests.post(serviceRoot +"People('lewisblack')/Trips/$ref", json=payload)
+status_code = response.status_code
+
+message, body = ("Success: ", str(response.json())) if status_code == 201 else ("Error: ", response.text)
+print( message + str(status_code) + "\n" + body)
+```
+# Step 6: Invoking a function
+```py
+import requests
+
+serviceRoot = "http://services.odata.org/v4/TripPinServiceRW/"
+response = requests.get(serviceRoot + "People('russellwhyte')/Trips(0)/Microsoft.OData.SampleService.Models.TripPin.GetInvolvedPeople()")
+status_code = response.status_code
+
+message, body = ("Success: ", str(response.json())) if status_code == 200 else ("Error: ", response.text)
+print( message + str(status_code) + "\n" + body)
+```