Update; add headers to py files

weather/weather.py

@@ -1,3 +1,13 @@
+# weather.py
+# ------------
+# By MWC Contributors
+#
+# Defines `print_weather`, which does all the work of fetching 
+# the requested weather data and printing it out to the screen
+# in a sensible way. 
+# 
+# It's your job to implement this function.
+
 from weather.weather_apis import (
     geocode_location,
     estimate_location,

weather/weather_apis.py

@@ -1,5 +1,7 @@
-# Weather APIs
-
+# weather_apis.py
+# ---------------
+# By MWC Contributors
+#
 # This module contains functions which interact with external APIs related to weather. 
 # The module relies on USA-specific services; it will need to be extended using local 
 # services for other regions.
@@ -7,6 +9,8 @@
 # The National Weather Service (NWS) provides weather forecasting services across US
 # states and territories. NWS divides the country into a grid of 2.5km squares, and 
 # provides a forecast for each grid square. 
+# 
+# You will need to use these functions, but you don't need to edit this file.
 
 import geocoder
 import requests

weather/weather_cli.py

@@ -1,3 +1,13 @@
+# weather_cli.py
+# ------------
+# By MWC Contributors
+#
+# Defines a CLI (command-line interface) for weather. 
+# This is the program that will actually run when you 
+# run `weather` in Terminal. 
+#
+# You don't need to do anything with thie file.
+
 from argparse import ArgumentParser
 from weather.weather import print_weather