MAINT: Run black

Run black to fix recent additions

Author: bashtage

pandas_datareader/compat/__init__.py

@@ -1,5 +1,7 @@
 from distutils.version import LooseVersion
-import sys
+from functools import reduce
+from io import StringIO
+from urllib.error import HTTPError
 
 import pandas as pd
 from pandas.api.types import is_list_like, is_number
@@ -28,6 +30,7 @@
     "lmap",
     "lrange",
     "concat",
+    "reduce",
 ]
 
 
@@ -43,12 +46,8 @@ def get_filepath_or_buffer(filepath_or_buffer, encoding=None, compression=None):
     )
 
 
-from urllib.error import HTTPError
-from functools import reduce
-
 string_types = (str,)
 binary_type = bytes
-from io import StringIO
 
 
 def str_to_bytes(s, encoding=None):

pandas_datareader/moex.py

@@ -67,9 +67,9 @@ def url(self):
             )
 
         return [
-            self.__url_data.format(
-                engine=engine, market=market, symbol=s
-            ) for s in self.symbols if s in self.__markets_n_engines
+            self.__url_data.format(engine=engine, market=market, symbol=s)
+            for s in self.symbols
+            if s in self.__markets_n_engines
             for market, engine in self.__markets_n_engines[s]
         ]
 

requirements-dev.txt

@@ -1,9 +1,9 @@
-black; python_version > '3.5'
+black==19.10b0; python_version > '3.5'
 flake8-bugbear; python_version > '3.5'
 coverage
 codecov
 coveralls
 flake8
 pytest
 pytest-cov
-wrapt
+wrapt