PEP8 clean-up

Author: Kurt Forrester

pandas_datareader/tests/test_wb.py

@@ -216,7 +216,6 @@ def test_wdi_get_indicators(self):
             assert len(result) > 10000
 
     def test_wdi_download_monthly(self):
-
         expected = {'COPPER': {('World', '2012M01'): 8040.47,
                                ('World', '2011M12'): 7565.48,
                                ('World', '2011M11'): 7581.02,
@@ -251,12 +250,11 @@ def test_wdi_download_monthly(self):
         tm.assert_frame_equal(result, expected)
 
     def test_wdi_download_quarterly(self):
-
         expected = {'DT.DOD.PUBS.CD.US': {('Albania', '2012Q1'): 3240539817.18,
                                           ('Albania', '2011Q4'): 3213979715.15,
                                           ('Albania', '2011Q3'): 3187681048.95,
                                           ('Albania', '2011Q2'): 3248041513.86,
-                                          ('Albania', '2011Q1'): 3137210567.92,}}
+                                          ('Albania', '2011Q1'): 3137210567.92}}
         expected = pd.DataFrame(expected)
         # Round, to ignore revisions to data.
         expected = np.round(expected, decimals=-3)

pandas_datareader/wb.py

@@ -144,11 +144,12 @@ def __init__(self, symbols=None, countries=None,
                 warnings.warn('Non-standard ISO '
                               'country codes: %s' % tmp, UserWarning)
 
-        freq_symbols = ['M','Q','A', None]
+        freq_symbols = ['M', 'Q', 'A', None]
+
         if freq not in freq_symbols:
             msg = 'The frequency `{0}` is not in the accepted list.'.format(freq)
             raise ValueError(msg)
-        
+
         self.freq = freq
         self.countries = countries
         self.errors = errors
@@ -168,7 +169,7 @@ def params(self):
         elif self.freq == 'Q':
             return {'date': '{0}Q{1}:{2}Q{3}'.format(self.start.year,
                     self.start.quarter, self.end.year,
-                    self.end.quarter), 'per_page': 25000, 
+                    self.end.quarter), 'per_page': 25000,
                     'format': 'json'}
         else:
             return {'date': '{0}:{1}'.format(self.start.year, self.end.year),
@@ -372,10 +373,10 @@ def download(country=None, indicator=None, start=2003, end=2005, freq=None,
 
     end: int
         Last year of the data series (inclusive)
-        
+
     freq: str
-        frequency or periodicity of the data to be retrieved (e.g. 'M' for 
-        monthly, 'Q' for quarterly, and 'A' for annual). None defaults to 
+        frequency or periodicity of the data to be retrieved (e.g. 'M' for
+        monthly, 'Q' for quarterly, and 'A' for annual). None defaults to
         annual.
 
     errors: str {'ignore', 'warn', 'raise'}, default 'warn'