Updated- Comments added

Comments were added to show why certain steps in the code happened

alternativeWeather.py

@@ -1,15 +1,26 @@
-from selenium import webdriver
+#Programmed by Premo
+#Simple weather program gets the current temperature in a given city directly
+#from a given website and returns the information it found from a given part
+#of the same website
 
+from selenium import webdriver
+#Selenium web driver imported 
 
 def weather(city):
+    #The instance of chrome Web driver is created
     driver = webdriver.Chrome()
-    #city = str(input("Which city would you like me to check?")).lo
     day = str(input("What day would you like to know the forecast for?")).lower()
+    #driver will get
     driver.get("https://www.timeanddate.com/weather/uk/"+city+"")
+    #Program can only get weather forecast for the day if the day is not today it will return nothing
     if "today" in day:
+        #the element we require will be found by its class name which we have defined
+        #the class name can be located by inspecting html source of the webpage
+        #and finding the relevant region
       return("It is " + driver.find_elements_by_class_name("h2")[0].text + " now.")
     else:
-      return()
+      return None
 
+#Prompts the user to put in a given city which will be used in the function defined above
 city = str(input("Which city would you like me to check?")).lower()
 weather(city)