Merge pull request #743 from bashtage/remove-python-27

Remove python 27

Author: bashtage

.travis.yml

@@ -10,8 +10,6 @@ env:
 matrix:
   fast_finish: true
   include:
-  - python: 2.7
-    env: PANDAS=0.24 NUMPY=1.16
   - python: 3.5
     env: PANDAS=0.21 NUMPY=1.13
   - python: 3.5
@@ -24,6 +22,8 @@ matrix:
     env: PANDAS=0.25 NUMPY=1.17
   - python: 3.7
     env: TEST_TYPE="quandl" PANDAS=0.25 NUMPY=1.17
+  - python: 3.8
+    env: PANDAS=0.25 NUMPY=1.18
     # In allow failures
   - python: 3.7
     env: TEST_TYPE="alpha_vantage" PANDAS=0.25 NUMPY=1.17

README.rst

@@ -24,7 +24,8 @@ Up to date remote data access for pandas, works for multiple versions of pandas.
 
 .. warning::
 
-  v0.8.0 is the last version which officially supports Python 2.7. Future versions of ``pandas_datareader`` will end support for Python 2.x.
+  v0.8.0 is the last version which officially supports Python 2.7. Future versions of
+  ``pandas_datareader`` will end support for Python 2.x.
 
 .. warning::
 

pandas_datareader/compat/__init__.py

@@ -1,13 +1,13 @@
 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
 import pandas.io.common as com
 from pandas.util.testing import assert_frame_equal
 
-PY3 = sys.version_info >= (3, 0)
-
 PANDAS_VERSION = LooseVersion(pd.__version__)
 
 PANDAS_0210 = PANDAS_VERSION >= LooseVersion("0.21.0")
@@ -30,6 +30,7 @@
     "lmap",
     "lrange",
     "concat",
+    "reduce",
 ]
 
 
@@ -45,34 +46,16 @@ def get_filepath_or_buffer(filepath_or_buffer, encoding=None, compression=None):
     )
 
 
-if PY3:
-    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):
-        return s.encode(encoding or "ascii")
-
-    def bytes_to_str(b, encoding=None):
-        return b.decode(encoding or "utf-8")
-
+string_types = (str,)
+binary_type = bytes
 
-else:
-    from urllib2 import HTTPError
-    from cStringIO import StringIO
 
-    reduce = reduce
-    binary_type = str
-    string_types = (basestring,)  # noqa: F821
+def str_to_bytes(s, encoding=None):
+    return s.encode(encoding or "ascii")
 
-    def bytes_to_str(b, encoding=None):
-        return b
 
-    def str_to_bytes(s, encoding=None):
-        return s
+def bytes_to_str(b, encoding=None):
+    return b.decode(encoding or "utf-8")
 
 
 def lmap(*args, **kwargs):

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]
         ]
 

pandas_datareader/tests/test_tiingo.py

@@ -3,7 +3,6 @@
 import pandas as pd
 import pytest
 
-from pandas_datareader.compat import PY3
 from pandas_datareader.tiingo import (
     TiingoDailyReader,
     TiingoIEXHistoricalReader,
@@ -64,7 +63,6 @@ def test_tiingo_metadata(symbols):
     assert df.shape[1] == len(symbols)
 
 
-@pytest.mark.skipif(not PY3, reason="test.support missing on Python 2")
 def test_tiingo_no_api_key(symbols):
     from test.support import EnvironmentVarGuard
 

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

setup.py

@@ -50,4 +50,5 @@ def readme():
     test_suite="tests",
     tests_require=tests_require,
     zip_safe=False,
+    python_requires=">=3.5",
 )