Add option to request data in csv format in get_dataframe method

tests/fixtures/ticker_price_pandas_daily_csv.yaml

@@ -0,0 +1,62 @@
+interactions:
+- request:
+    body: null
+    headers:
+      Accept:
+      - '*/*'
+      Accept-Encoding:
+      - gzip, deflate
+      Authorization:
+      - Token 0000000000000000000000000000000000000000
+      Connection:
+      - keep-alive
+      Content-Type:
+      - application/json
+      User-Agent:
+      - tiingo-python-client 0.13.0
+    method: GET
+    uri: https://api.tiingo.com/tiingo/daily/GOOGL/prices?format=csv&resampleFreq=daily&startDate=2018-01-05&endDate=2018-01-19
+  response:
+    body:
+      string: 'date,close,high,low,open,volume,adjClose,adjHigh,adjLow,adjOpen,adjVolume,divCash,splitFactor
+
+        2018-01-05,1110.29,1113.58,1101.8,1103.45,1493389,1110.29,1113.58,1101.8,1103.45,1493389,0.0,1.0
+
+        2018-01-08,1114.21,1119.16,1110.0,1111.0,1148958,1114.21,1119.16,1110.0,1111.0,1148958,0.0,1.0
+
+        2018-01-09,1112.79,1118.44,1108.2,1118.44,1335995,1112.79,1118.44,1108.2,1118.44,1335995,0.0,1.0
+
+        2018-01-10,1110.14,1112.78,1103.98,1107.0,1027781,1110.14,1112.78,1103.98,1107.0,1027781,0.0,1.0
+
+        2018-01-11,1112.05,1114.85,1106.48,1112.31,1102461,1112.05,1114.85,1106.48,1112.31,1102461,0.0,1.0
+
+        2018-01-12,1130.65,1131.3,1108.01,1110.1,1914460,1130.65,1131.3,1108.01,1110.1,1914460,0.0,1.0
+
+        2018-01-16,1130.7,1148.88,1126.66,1140.31,1783881,1130.7,1148.88,1126.66,1140.31,1783881,0.0,1.0
+
+        2018-01-17,1139.1,1139.32,1123.49,1136.36,1353097,1139.1,1139.32,1123.49,1136.36,1353097,0.0,1.0
+
+        2018-01-18,1135.97,1140.59,1124.46,1139.35,1333633,1135.97,1140.59,1124.46,1139.35,1333633,0.0,1.0
+
+        2018-01-19,1143.5,1143.78,1132.5,1138.03,1418376,1143.5,1143.78,1132.5,1138.03,1418376,0.0,1.0
+
+        '
+    headers:
+      allow:
+      - GET, HEAD, OPTIONS
+      content-length:
+      - '1062'
+      content-type:
+      - text/csv
+      date:
+      - Sat, 17 Oct 2020 19:30:04 GMT
+      server:
+      - nginx/1.14.0 (Ubuntu)
+      vary:
+      - Accept, Cookie, Origin
+      x-frame-options:
+      - SAMEORIGIN
+    status:
+      code: 200
+      message: OK
+version: 1

tests/fixtures/ticker_price_pandas_daily_equivalent_requesting_json_or_csv.yaml

@@ -0,0 +1,100 @@
+interactions:
+- request:
+    body: null
+    headers:
+      Accept:
+      - '*/*'
+      Accept-Encoding:
+      - gzip, deflate
+      Authorization:
+      - Token 0000000000000000000000000000000000000000
+      Connection:
+      - keep-alive
+      Content-Type:
+      - application/json
+      User-Agent:
+      - tiingo-python-client 0.13.0
+    method: GET
+    uri: https://api.tiingo.com/tiingo/daily/GOOGL/prices?format=json&resampleFreq=daily&startDate=2018-01-05&endDate=2018-01-19
+  response:
+    body:
+      string: '[{"date":"2018-01-05T00:00:00.000Z","close":1110.29,"high":1113.58,"low":1101.8,"open":1103.45,"volume":1493389,"adjClose":1110.29,"adjHigh":1113.58,"adjLow":1101.8,"adjOpen":1103.45,"adjVolume":1493389,"divCash":0.0,"splitFactor":1.0},{"date":"2018-01-08T00:00:00.000Z","close":1114.21,"high":1119.16,"low":1110.0,"open":1111.0,"volume":1148958,"adjClose":1114.21,"adjHigh":1119.16,"adjLow":1110.0,"adjOpen":1111.0,"adjVolume":1148958,"divCash":0.0,"splitFactor":1.0},{"date":"2018-01-09T00:00:00.000Z","close":1112.79,"high":1118.44,"low":1108.2,"open":1118.44,"volume":1335995,"adjClose":1112.79,"adjHigh":1118.44,"adjLow":1108.2,"adjOpen":1118.44,"adjVolume":1335995,"divCash":0.0,"splitFactor":1.0},{"date":"2018-01-10T00:00:00.000Z","close":1110.14,"high":1112.78,"low":1103.98,"open":1107.0,"volume":1027781,"adjClose":1110.14,"adjHigh":1112.78,"adjLow":1103.98,"adjOpen":1107.0,"adjVolume":1027781,"divCash":0.0,"splitFactor":1.0},{"date":"2018-01-11T00:00:00.000Z","close":1112.05,"high":1114.85,"low":1106.48,"open":1112.31,"volume":1102461,"adjClose":1112.05,"adjHigh":1114.85,"adjLow":1106.48,"adjOpen":1112.31,"adjVolume":1102461,"divCash":0.0,"splitFactor":1.0},{"date":"2018-01-12T00:00:00.000Z","close":1130.65,"high":1131.3,"low":1108.01,"open":1110.1,"volume":1914460,"adjClose":1130.65,"adjHigh":1131.3,"adjLow":1108.01,"adjOpen":1110.1,"adjVolume":1914460,"divCash":0.0,"splitFactor":1.0},{"date":"2018-01-16T00:00:00.000Z","close":1130.7,"high":1148.88,"low":1126.66,"open":1140.31,"volume":1783881,"adjClose":1130.7,"adjHigh":1148.88,"adjLow":1126.66,"adjOpen":1140.31,"adjVolume":1783881,"divCash":0.0,"splitFactor":1.0},{"date":"2018-01-17T00:00:00.000Z","close":1139.1,"high":1139.32,"low":1123.49,"open":1136.36,"volume":1353097,"adjClose":1139.1,"adjHigh":1139.32,"adjLow":1123.49,"adjOpen":1136.36,"adjVolume":1353097,"divCash":0.0,"splitFactor":1.0},{"date":"2018-01-18T00:00:00.000Z","close":1135.97,"high":1140.59,"low":1124.46,"open":1139.35,"volume":1333633,"adjClose":1135.97,"adjHigh":1140.59,"adjLow":1124.46,"adjOpen":1139.35,"adjVolume":1333633,"divCash":0.0,"splitFactor":1.0},{"date":"2018-01-19T00:00:00.000Z","close":1143.5,"high":1143.78,"low":1132.5,"open":1138.03,"volume":1418376,"adjClose":1143.5,"adjHigh":1143.78,"adjLow":1132.5,"adjOpen":1138.03,"adjVolume":1418376,"divCash":0.0,"splitFactor":1.0}]'
+    headers:
+      allow:
+      - GET, HEAD, OPTIONS
+      content-length:
+      - '2349'
+      content-type:
+      - application/json
+      date:
+      - Sat, 17 Oct 2020 19:37:30 GMT
+      server:
+      - nginx/1.14.0 (Ubuntu)
+      vary:
+      - Accept, Cookie, Origin
+      x-frame-options:
+      - SAMEORIGIN
+    status:
+      code: 200
+      message: OK
+- request:
+    body: null
+    headers:
+      Accept:
+      - '*/*'
+      Accept-Encoding:
+      - gzip, deflate
+      Authorization:
+      - Token 0000000000000000000000000000000000000000
+      Connection:
+      - keep-alive
+      Content-Type:
+      - application/json
+      User-Agent:
+      - tiingo-python-client 0.13.0
+    method: GET
+    uri: https://api.tiingo.com/tiingo/daily/GOOGL/prices?format=csv&resampleFreq=daily&startDate=2018-01-05&endDate=2018-01-19
+  response:
+    body:
+      string: 'date,close,high,low,open,volume,adjClose,adjHigh,adjLow,adjOpen,adjVolume,divCash,splitFactor
+
+        2018-01-05,1110.29,1113.58,1101.8,1103.45,1493389,1110.29,1113.58,1101.8,1103.45,1493389,0.0,1.0
+
+        2018-01-08,1114.21,1119.16,1110.0,1111.0,1148958,1114.21,1119.16,1110.0,1111.0,1148958,0.0,1.0
+
+        2018-01-09,1112.79,1118.44,1108.2,1118.44,1335995,1112.79,1118.44,1108.2,1118.44,1335995,0.0,1.0
+
+        2018-01-10,1110.14,1112.78,1103.98,1107.0,1027781,1110.14,1112.78,1103.98,1107.0,1027781,0.0,1.0
+
+        2018-01-11,1112.05,1114.85,1106.48,1112.31,1102461,1112.05,1114.85,1106.48,1112.31,1102461,0.0,1.0
+
+        2018-01-12,1130.65,1131.3,1108.01,1110.1,1914460,1130.65,1131.3,1108.01,1110.1,1914460,0.0,1.0
+
+        2018-01-16,1130.7,1148.88,1126.66,1140.31,1783881,1130.7,1148.88,1126.66,1140.31,1783881,0.0,1.0
+
+        2018-01-17,1139.1,1139.32,1123.49,1136.36,1353097,1139.1,1139.32,1123.49,1136.36,1353097,0.0,1.0
+
+        2018-01-18,1135.97,1140.59,1124.46,1139.35,1333633,1135.97,1140.59,1124.46,1139.35,1333633,0.0,1.0
+
+        2018-01-19,1143.5,1143.78,1132.5,1138.03,1418376,1143.5,1143.78,1132.5,1138.03,1418376,0.0,1.0
+
+        '
+    headers:
+      allow:
+      - GET, HEAD, OPTIONS
+      content-length:
+      - '1062'
+      content-type:
+      - text/csv
+      date:
+      - Sat, 17 Oct 2020 19:37:31 GMT
+      server:
+      - nginx/1.14.0 (Ubuntu)
+      vary:
+      - Accept, Cookie, Origin
+      x-frame-options:
+      - SAMEORIGIN
+    status:
+      code: 200
+      message: OK
+version: 1

tests/fixtures/ticker_price_pandas_daily_metric_name_csv.yaml

@@ -0,0 +1,62 @@
+interactions:
+- request:
+    body: null
+    headers:
+      Accept:
+      - '*/*'
+      Accept-Encoding:
+      - gzip, deflate
+      Authorization:
+      - Token 0000000000000000000000000000000000000000
+      Connection:
+      - keep-alive
+      Content-Type:
+      - application/json
+      User-Agent:
+      - tiingo-python-client 0.13.0
+    method: GET
+    uri: https://api.tiingo.com/tiingo/daily/GOOGL/prices?format=csv&resampleFreq=daily&startDate=2018-01-05&endDate=2018-01-19
+  response:
+    body:
+      string: 'date,close,high,low,open,volume,adjClose,adjHigh,adjLow,adjOpen,adjVolume,divCash,splitFactor
+
+        2018-01-05,1110.29,1113.58,1101.8,1103.45,1493389,1110.29,1113.58,1101.8,1103.45,1493389,0.0,1.0
+
+        2018-01-08,1114.21,1119.16,1110.0,1111.0,1148958,1114.21,1119.16,1110.0,1111.0,1148958,0.0,1.0
+
+        2018-01-09,1112.79,1118.44,1108.2,1118.44,1335995,1112.79,1118.44,1108.2,1118.44,1335995,0.0,1.0
+
+        2018-01-10,1110.14,1112.78,1103.98,1107.0,1027781,1110.14,1112.78,1103.98,1107.0,1027781,0.0,1.0
+
+        2018-01-11,1112.05,1114.85,1106.48,1112.31,1102461,1112.05,1114.85,1106.48,1112.31,1102461,0.0,1.0
+
+        2018-01-12,1130.65,1131.3,1108.01,1110.1,1914460,1130.65,1131.3,1108.01,1110.1,1914460,0.0,1.0
+
+        2018-01-16,1130.7,1148.88,1126.66,1140.31,1783881,1130.7,1148.88,1126.66,1140.31,1783881,0.0,1.0
+
+        2018-01-17,1139.1,1139.32,1123.49,1136.36,1353097,1139.1,1139.32,1123.49,1136.36,1353097,0.0,1.0
+
+        2018-01-18,1135.97,1140.59,1124.46,1139.35,1333633,1135.97,1140.59,1124.46,1139.35,1333633,0.0,1.0
+
+        2018-01-19,1143.5,1143.78,1132.5,1138.03,1418376,1143.5,1143.78,1132.5,1138.03,1418376,0.0,1.0
+
+        '
+    headers:
+      allow:
+      - GET, HEAD, OPTIONS
+      content-length:
+      - '1062'
+      content-type:
+      - text/csv
+      date:
+      - Sat, 17 Oct 2020 19:30:04 GMT
+      server:
+      - nginx/1.14.0 (Ubuntu)
+      vary:
+      - Accept, Cookie, Origin
+      x-frame-options:
+      - SAMEORIGIN
+    status:
+      code: 200
+      message: OK
+version: 1

tests/fixtures/ticker_price_pandas_weekly_multiple_tickers_csv.yaml

@@ -0,0 +1,94 @@
+interactions:
+- request:
+    body: null
+    headers:
+      Accept:
+      - '*/*'
+      Accept-Encoding:
+      - gzip, deflate
+      Authorization:
+      - Token 0000000000000000000000000000000000000000
+      Connection:
+      - keep-alive
+      Content-Type:
+      - application/json
+      User-Agent:
+      - tiingo-python-client 0.13.0
+    method: GET
+    uri: https://api.tiingo.com/tiingo/daily/GOOGL/prices?format=csv&resampleFreq=weekly&startDate=2018-01-05&endDate=2018-01-19
+  response:
+    body:
+      string: 'date,close,high,low,open,volume,adjClose,adjHigh,adjLow,adjOpen,adjVolume,divCash,splitFactor
+
+        2018-01-05,1110.29,1113.58,1053.02,1053.02,5889084,1110.29,1113.58,1053.02,1053.02,5889084,0.0,1.0
+
+        2018-01-12,1130.65,1131.3,1103.98,1111.0,6529655,1130.65,1131.3,1103.98,1111.0,6529655,0.0,1.0
+
+        2018-01-19,1143.5,1148.88,1123.49,1140.31,5888987,1143.5,1148.88,1123.49,1140.31,5888987,0.0,1.0
+
+        '
+    headers:
+      allow:
+      - GET, HEAD, OPTIONS
+      content-length:
+      - '385'
+      content-type:
+      - text/csv
+      date:
+      - Sat, 17 Oct 2020 19:45:21 GMT
+      server:
+      - nginx/1.14.0 (Ubuntu)
+      vary:
+      - Accept, Cookie, Origin
+      x-frame-options:
+      - SAMEORIGIN
+    status:
+      code: 200
+      message: OK
+- request:
+    body: null
+    headers:
+      Accept:
+      - '*/*'
+      Accept-Encoding:
+      - gzip, deflate
+      Authorization:
+      - Token 0000000000000000000000000000000000000000
+      Connection:
+      - keep-alive
+      Content-Type:
+      - application/json
+      User-Agent:
+      - tiingo-python-client 0.13.0
+    method: GET
+    uri: https://api.tiingo.com/tiingo/daily/AAPL/prices?format=csv&resampleFreq=weekly&startDate=2018-01-05&endDate=2018-01-19
+  response:
+    body:
+      string: 'date,close,high,low,open,volume,adjClose,adjHigh,adjLow,adjOpen,adjVolume,divCash,splitFactor
+
+        2018-01-05,175.0,175.37,169.26,170.16,99095223,42.1719535342792,42.2611170931803,40.7887134583549,41.0055977908169,396380892,0.0,1.0
+
+        2018-01-12,177.09,177.36,173.0,174.35,107548622,42.6756071507743,42.7406724505129,41.6899883510303,42.0153148497233,430194488,0.0,1.0
+
+        2018-01-19,178.46,180.1,175.07,177.9,122974060,43.0057533012998,43.4009647515639,42.1888223156929,42.8708030499901,491896240,0.0,1.0
+
+        '
+    headers:
+      allow:
+      - GET, HEAD, OPTIONS
+      content-length:
+      - '494'
+      content-type:
+      - text/csv
+      date:
+      - Sat, 17 Oct 2020 19:45:22 GMT
+      server:
+      - nginx/1.14.0 (Ubuntu)
+      vary:
+      - Accept, Cookie, Origin
+      x-frame-options:
+      - SAMEORIGIN
+    status:
+      code: 200
+      message: OK
+version: 1

tests/test_tiingo_pandas.py

@@ -38,6 +38,16 @@ class TestTiingoWithPython(TestCase):
         assert len(prices.columns) == 2
         assert len(prices.index) == 3
 
+    @vcr.use_cassette('tests/fixtures/ticker_price_pandas_weekly_multiple_tickers_csv.yaml')
+    def test_return_pandas_format_multiple(self):
+        """Test that valid pandas format is returned when specified"""
+        tickers = ["GOOGL", "AAPL"]
+        prices = self._client.get_dataframe(tickers, startDate='2018-01-05',
+            endDate='2018-01-19', metric_name='adjClose', frequency='weekly', fmt='csv')
+        self.assertTrue(isinstance(prices, pd.DataFrame))
+        assert len(prices.columns) == 2
+        assert len(prices.index) == 3
+
     @vcr.use_cassette('tests/fixtures/ticker_price_pandas_daily.yaml')
     def test_return_pandas_daily(self):
         """Test that valid pandas format is returned when specified"""
@@ -46,6 +56,18 @@ class TestTiingoWithPython(TestCase):
         self.assertTrue(isinstance(prices, pd.DataFrame))
         assert len(prices.columns) == 12
 
+    @vcr.use_cassette('tests/fixtures/ticker_price_pandas_daily_csv.yaml')
+    def test_return_pandas_daily_csv(self):
+        """Test that valid pandas format is returned when specified and csv data requested"""
+        prices = self._client.get_dataframe("GOOGL",
+                                            startDate='2018-01-05', endDate='2018-01-19',
+                                            frequency='daily', fmt='csv')
+        self.assertTrue(isinstance(prices, pd.DataFrame))
+        self.assertTrue(isinstance(prices.index, pd.DatetimeIndex))
+        assert prices.index.tz.zone == 'UTC'
+        assert len(prices) == 10
+        assert len(prices.columns) == 12
+
     @vcr.use_cassette('tests/fixtures/ticker_price_pandas_daily_metric_name.yaml')
     def test_return_pandas_daily(self):
         """Test that one column is returned when a metric name is specified"""
@@ -55,6 +77,36 @@ class TestTiingoWithPython(TestCase):
         self.assertTrue(isinstance(prices, pd.Series))
         assert len(prices.index) == 10
 
+    @vcr.use_cassette('tests/fixtures/ticker_price_pandas_daily_metric_name_csv.yaml')
+    def test_return_pandas_daily_metric_name_csv(self):
+        """Test that one column is returned when a metric name is specified and csv data requested
+           Request unadjusted close column to ensure data remains constant in case GOOGL splits
+           or distributes dividends.
+        """
+        prices = self._client.get_dataframe("GOOGL", startDate='2018-01-05', metric_name='close',
+                                            endDate='2018-01-19', frequency='daily', fmt='csv')
+        self.assertTrue(isinstance(prices, pd.Series))
+        self.assertTrue(isinstance(prices.index, pd.DatetimeIndex))
+        assert prices.index.tz.zone == 'UTC'
+        assert prices.values.tolist() == [
+            1110.29,1114.21,1112.79,1110.14,1112.05,
+            1130.65,1130.7,1139.1,1135.97,1143.5]
+        assert len(prices.index) == 10
+
+    @vcr.use_cassette('tests/fixtures/ticker_price_pandas_daily_equivalent_requesting_json_or_csv.yaml')
+    def test_price_pandas_daily_equivalent_requesting_json_or_csv(self):
+        """Test that equivalent data is returned when specifying reuqest format in json or csv.
+        """
+        prices_json = self._client.get_dataframe("GOOGL", 
+            startDate='2018-01-05', endDate='2018-01-19', 
+            metric_name='close', frequency='daily')
+
+        prices_csv = self._client.get_dataframe("GOOGL", 
+            startDate='2018-01-05', endDate='2018-01-19', 
+            metric_name='close', frequency='daily', fmt='csv')
+
+        self.assertTrue(prices_json.equals(prices_csv))
+
     @vcr.use_cassette('tests/fixtures/intraday_price.yaml')
     def test_intraday_ticker_price(self):
         """Test the EOD Prices Endpoint with data param"""

tiingo/api.py

@@ -166,6 +166,47 @@ class TiingoClient(RestClient):
             else:
                 return "iex/{}/prices".format(ticker)
 
+    def _request_pandas(self, ticker, metric_name, params):
+        """
+        Return data for ticker as a pandas.DataFrame if metric_name is not
+        specified or as a pandas.Series if metric_name is specified.
+
+        :param ticker (string): ticker to be requested
+        :param params (dict): a dictionary containing valid resampleFreq
+            and format strings per the Tiingo api
+        :param metric_name (string): Optional parameter specifying metric to be returned for each
+            ticker.  In the event of a single ticker, this is optional and if not specified
+            all of the available data will be returned.  In the event of a list of tickers,
+            this parameter is required.
+        """
+        url = self._get_url(ticker, params['resampleFreq'])
+        response = self._request('GET', url, params=params)
+        if params['format'] == 'csv':
+            if sys.version_info < (3, 0):  # python 2
+                from StringIO import StringIO
+            else:  # python 3
+                from io import StringIO
+
+            df = pd.read_csv(StringIO(response.content.decode('utf-8')))
+        else:
+            df = pd.DataFrame(response.json())
+
+        df.set_index('date', inplace=True)
+
+        if metric_name is not None:
+            prices = df[metric_name]
+        else:
+            prices = df
+
+        prices.index = pd.to_datetime(prices.index)
+
+        # Localize to UTC to ensure equivalence between data returned in json format and
+        # csv format. Data requested in csv format does not include a timezone.
+        if prices.index.tz is None:
+            prices.index = prices.index.tz_localize('UTC')
+
+        return prices
+
     def get_ticker_price(self, ticker,
                          startDate=None, endDate=None,
                          fmt='json', frequency='daily'):
@@ -205,7 +246,8 @@ class TiingoClient(RestClient):
             return response.content.decode("utf-8")
 
     def get_dataframe(self, tickers,
-                      startDate=None, endDate=None, metric_name=None, frequency='daily'):
+                      startDate=None, endDate=None, metric_name=None,
+                      frequency='daily', fmt='json'):
 
         """ Return a pandas.DataFrame of historical prices for one or more ticker symbols.
 
@@ -225,6 +267,7 @@ class TiingoClient(RestClient):
                     all of the available data will be returned.  In the event of a list of tickers,
                     this parameter is required.
                 frequency (string): Resample frequency (defaults to daily).
+                fmt (string): 'csv' or 'json'
         """
 
         valid_columns = {'open', 'high', 'low', 'close', 'volume', 'adjOpen', 'adjHigh', 'adjLow',
@@ -238,7 +281,7 @@ class TiingoClient(RestClient):
             Please provide a metric_name, or call this method with one ticker at a time.""")
 
         params = {
-            'format': 'json',
+            'format': fmt,
             'resampleFreq': frequency
         }
         if startDate:
@@ -248,28 +291,18 @@ class TiingoClient(RestClient):
 
         if pandas_is_installed:
             if type(tickers) is str:
-                stock = tickers
+                prices = self._request_pandas(
-                url = self._get_url(stock, frequency)
+                    ticker=tickers, params=params, metric_name=metric_name)
-                response = self._request('GET', url, params=params)
-                df = pd.DataFrame(response.json())
-                if metric_name is not None:
-                    prices = df[metric_name]
-                    prices.index = df['date']
-                else:
-                    prices = df
-                    prices.index = df['date']
-                    del (prices['date'])
             else:
                 prices = pd.DataFrame()
                 for stock in tickers:
-                    url = self._get_url(stock, frequency)
+                    ticker_series = self._request_pandas(
-                    response = self._request('GET', url, params=params)
+                        ticker=stock, params=params, metric_name=metric_name)
-                    df = pd.DataFrame(response.json())
+                    ticker_series = ticker_series.rename(stock)
-                    df.index = df['date']
+                    prices = pd.concat([prices, ticker_series], axis=1, sort=True)
-                    df.rename(index=str, columns={metric_name: stock}, inplace=True)
+
-                    prices = pd.concat([prices, df[stock]], axis=1, sort=True)
-            prices.index = pd.to_datetime(prices.index)
             return prices
+
         else:
             error_message = ("Pandas is not installed, but .get_ticker_price() was "
                              "called with fmt=pandas.  In order to install tiingo with "