get_groups_zoom.py: Remove dependency on config file

get_groups_zoom.py

@@ -5,15 +5,10 @@ import canvas_api
 import os.path
 import readline
 
-from config import token_file, course_id
-
 if __name__ == "__main__":
-    if not os.path.isfile(token_file):
-        token = input("Enter a Canvas Token (https://canvas.uw.edu/profile/settings): ")
-        with open(token_file, 'w') as f:
-            f.write(token)
-
-    token = open(token_file, 'r').read().strip(" \n\t")
+    token = os.getenv("TOKEN")
+    if not token:
+        token = input("Enter a Canvas token (https://canvas.uw.edu/profile/settings): ")
 
     canvas = canvas_api.Canvas(token)
 
@@ -22,6 +17,10 @@ if __name__ == "__main__":
         print("Invalid Canvas token.")
         exit(1)
 
+    course_id = os.getenv("COURSE_ID")
+    if not course_id:
+        course_id = input("Enter a Canvas course ID (URL slug): ")
+
     course = canvas.get_course(course_id)
     if course is None:
         print("Invalid Canvas course.")