Add method for listing available tickers

.gitignore

@@ -67,3 +67,6 @@ target/
 # Remove Project Components from tracking
 travis_pypi_setup.py
 
+# Mac
+.DS_Store
+

tests/test_tiingo.py

@@ -64,11 +64,11 @@ class TestTickerPrices(TestCase):
         assert self._ticker_metadata_response.get('ticker') == "GOOGL"
         assert self._ticker_metadata_response.get("name")
 
-    def test_list_tickers(self):
+    def test_list_stock_tickers(self):
         """Update this test when the method is added."""
-        with self.assertRaises(NotImplementedError):
-            response = self._client.list_tickers()
-            assert not response
+        tickers = self._client.list_stock_tickers()
+        assert len(tickers) > 1
+        assert all(ticker['assetType'] == 'Stock' for ticker in tickers)
 
 
 # tiingo/news

tiingo/api.py

@@ -1,6 +1,8 @@
 # -*- coding: utf-8 -*-
 
+import io
 import os
+import csv
 import pkg_resources
 from tiingo.restclient import RestClient
 
@@ -35,11 +37,24 @@ class TiingoClient(RestClient):
 
     # TICKER PRICE ENDPOINTS
     # https://api.tiingo.com/docs/tiingo/daily
-    def list_tickers(self):
-        """Return a list of all supported tickers.
+    def list_stock_tickers(self):
+        """Return a list of dicts of metadata tickers for all supported Stocks
+            as well as metadata about each ticker.
+           Tickers for unrelated products are omitted.
            https://apimedia.tiingo.com/docs/tiingo/daily/supported_tickers.zip
            """
-        raise NotImplementedError
+        resource_package = __name__
+        listing_path = "/".join(('data', 'supported_tickers.csv'))
+        listing_file = pkg_resources.resource_stream(resource_package,
+                                                     listing_path)
+        tickers = []
+        reader = csv.DictReader(listing_file)
+        for row in reader:
+            tickers = [row for row in reader
+                       if row.get('assetType') == 'Stock']
+
+        return [ticker for
+                ticker in tickers if ticker.get('assetType') == 'Stock']
 
     def get_ticker_metadata(self, ticker):
         """Return metadata for 1 ticker