diff --git a/pinboard.py b/pinboard.py
index 5668f6c..2b2046a 100644
--- a/pinboard.py
+++ b/pinboard.py
@@ -1,21 +1,27 @@
 import json
 import os
-import requests
 import time
+import requests
 
 
-pinboard_token = os.environ.get("PINBOARD_TOKEN")
-pinboard_base_url = "https://api.pinboard.in/v1/"
-pinboard_auth_snippet = f"?auth_token={pinboard_token}"
+PINBOARD_TOKEN = os.environ.get("PINBOARD_TOKEN")
+PINBOARD_BASE_URL = "https://api.pinboard.in/v1/"
+PINBOARD_AUTH_SNIPPET = f"?auth_token={PINBOARD_TOKEN}"
 
 def get_all_posts():
-    get_post_snippet = f"posts/all?auth_token={pinboard_token}"
-    pinboard_url = pinboard_base_url + get_post_snippet
+    """
+    returns a list of all pins in pinboard account
+    """
+    get_post_snippet = f"posts/all?auth_token={PINBOARD_TOKEN}"
+    pinboard_url = PINBOARD_BASE_URL + get_post_snippet
 
     return requests.get(pinboard_url)
-    
+
 
 def add_pin_url(reddit_dict):
+    """
+    adds a pin to pinboard and returns the response
+    """
     add_post_snippet = "posts/add"
     # headers = {'Content-type': 'application/json'}
     args = {
@@ -26,7 +32,7 @@ def add_pin_url(reddit_dict):
         'replace': 'no'
     }
 
-    post_url = pinboard_base_url + add_post_snippet + pinboard_auth_snippet
+    post_url = PINBOARD_BASE_URL + add_post_snippet + PINBOARD_AUTH_SNIPPET
 
     response = requests.get(post_url, params=args)
     # pdb.set_trace()
@@ -35,6 +41,10 @@ def add_pin_url(reddit_dict):
 
 
 def import_reddit_url_from_file(filename):
+    """
+    imports a list of reddit URLs and meta data from a file. 
+    returns a json object of that data.
+    """
     with open(filename, 'r') as infile:
         data = json.loads(infile.read())
 
@@ -43,11 +53,10 @@ def import_reddit_url_from_file(filename):
 
 if __name__ == "__main__":
     """
-    You have to sleep for 3 seconds between requests or Maciej will Get Unhappy per
-    https://pinboard.in/api
+    You have to sleep for 3 seconds between requests or Maciej will Get Unhappy
+    per https://pinboard.in/api
     """
-    reddit_data = import_reddit_url_from_file("data.json")
-    for entry in reddit_data:
+    REDDIT_DATA = import_reddit_url_from_file("data.json")
+    for entry in REDDIT_DATA:
         post_response = add_pin_url(entry)
         time.sleep(3)
-    # print(post_response.text)