Merge pull request #657 from bashtage/702

BUG: Remove pandas.compat dependencies

Author: bashtage

docs/source/whatsnew/v0.7.0.txt

@@ -64,6 +64,7 @@ Backwards incompatible API changes
 Bug Fixes
 ~~~~~~~~~
 
+- Fixed import of pandas.compat (:issue:`657`)
 - Added support for passing the API KEY to QuandlReader either directly or by
   setting the environmental variable QUANDL_API_KEY (:issue:`485`).
 - Added support for optionally passing a custom base_url to the EnigmaReader  (:issue:`499`).

pandas_datareader/bankofcanada.py

@@ -1,6 +1,6 @@
 from __future__ import unicode_literals
 
-import pandas.compat as compat
+from pandas_datareader.compat import string_types
 
 from pandas_datareader.base import _BaseReader
 
@@ -17,7 +17,7 @@ class BankOfCanadaReader(_BaseReader):
     @property
     def url(self):
         """API URL"""
-        if not isinstance(self.symbols, compat.string_types):
+        if not isinstance(self.symbols, string_types):
             raise ValueError('data name must be string')
 
         return '{0}/{1}/csv'.format(self._URL, self.symbols)

pandas_datareader/base.py

@@ -3,12 +3,12 @@
 import numpy as np
 
 import requests
+from io import StringIO
 
-import pandas.compat as compat
 from pandas import DataFrame
 from pandas import read_csv, concat
 from pandas.io.common import urlencode
-from pandas.compat import StringIO, bytes_to_str
+from pandas_datareader.compat import bytes_to_str, string_types, binary_type
 
 from pandas_datareader._utils import (RemoteDataError, SymbolWarning,
                                       _sanitize_dates, _init_session)
@@ -99,7 +99,7 @@ def _read_url_as_StringIO(self, url, params=None):
             service = self.__class__.__name__
             raise IOError("{} request returned no data; check URL for invalid "
                           "inputs: {}".format(service, self.url))
-        if isinstance(text, compat.binary_type):
+        if isinstance(text, binary_type):
             out.write(bytes_to_str(text))
         else:
             out.write(text)
@@ -205,7 +205,7 @@ def _get_params(self, *args, **kwargs):
     def read(self):
         """Read data"""
         # If a single symbol, (e.g., 'GOOG')
-        if isinstance(self.symbols, (compat.string_types, int)):
+        if isinstance(self.symbols, (string_types, int)):
             df = self._read_one_data(self.url,
                                      params=self._get_params(self.symbols))
         # Or multiple symbols, (e.g., ['GOOG', 'AAPL', 'MSFT'])

pandas_datareader/compat/__init__.py

@@ -1,12 +1,10 @@
 # flake8: noqa
+import pandas as pd
+import pandas.io.common as com
 import sys
 from distutils.version import LooseVersion
 from io import BytesIO
 
-import pandas as pd
-import pandas.compat as compat
-import pandas.io.common as com
-
 PY3 = sys.version_info >= (3, 0)
 
 PANDAS_VERSION = LooseVersion(pd.__version__)
@@ -45,8 +43,39 @@ def get_filepath_or_buffer(filepath_or_buffer, encoding=None,
 else:
     from pandas.core.common import is_list_like
 
-
-if compat.PY3:
+if PY3:
     from urllib.error import HTTPError
+    from functools import reduce
+
+    string_types = str,
+    binary_type = bytes
+
+
+    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')
 else:
     from urllib2 import HTTPError
+
+    reduce = reduce
+    binary_type = str
+    string_types = basestring,
+
+
+    def bytes_to_str(b, encoding=None):
+        return b
+
+
+    def str_to_bytes(s, encoding=None):
+        return s
+
+
+def lmap(*args, **kwargs):
+    return list(map(*args, **kwargs))
+
+
+def lrange(*args, **kwargs):
+    return list(range(*args, **kwargs))

pandas_datareader/enigma.py

@@ -2,10 +2,9 @@
 import time
 
 from io import StringIO
-import pandas.compat as compat
 import pandas as pd
 
-from pandas_datareader.base import _BaseReader
+from pandas_datareader.base import _BaseReader, string_types
 
 
 class EnigmaReader(_BaseReader):
@@ -65,7 +64,7 @@ def __init__(self,
             self._api_key = api_key
 
         self._dataset_id = dataset_id
-        if not isinstance(self._dataset_id, compat.string_types):
+        if not isinstance(self._dataset_id, string_types):
             raise ValueError(
                 "The Enigma dataset_id must be a string (ex: "
                 "'bedaf052-5fcd-4758-8d27-048ce8746c6a')")

pandas_datareader/eurostat.py

@@ -1,9 +1,9 @@
 from __future__ import unicode_literals
 
 import pandas as pd
-import pandas.compat as compat
 
 from pandas_datareader.io.sdmx import read_sdmx, _read_sdmx_dsd
+from pandas_datareader.compat import string_types
 from pandas_datareader.base import _BaseReader
 
 
@@ -15,7 +15,7 @@ class EurostatReader(_BaseReader):
     @property
     def url(self):
         """API URL"""
-        if not isinstance(self.symbols, compat.string_types):
+        if not isinstance(self.symbols, string_types):
             raise ValueError('data name must be string')
 
         q = '{0}/data/{1}/?startperiod={2}&endperiod={3}'
@@ -25,7 +25,7 @@ def url(self):
     @property
     def dsd_url(self):
         """API DSD URL"""
-        if not isinstance(self.symbols, compat.string_types):
+        if not isinstance(self.symbols, string_types):
             raise ValueError('data name must be string')
 
         return '{0}/datastructure/ESTAT/DSD_{1}'.format(

pandas_datareader/famafrench.py

@@ -5,7 +5,7 @@
 from zipfile import ZipFile
 
 from pandas import read_csv, to_datetime
-from pandas.compat import lmap
+from pandas_datareader.compat import lmap
 
 from pandas_datareader.base import _BaseReader
 
@@ -107,7 +107,7 @@ def _read_one_data(self, url, params):
 
         datasets, table_desc = {}, []
         for i, src in enumerate(tables):
-            match = re.search('^\s*,', src, re.M)  # the table starts there
+            match = re.search(r'^\s*,', src, re.M)  # the table starts there
             start = 0 if not match else match.start()
 
             df = read_csv(StringIO('Date' + src[start:]), **params)

pandas_datareader/google/quotes.py

@@ -1,10 +1,11 @@
+import json
+import numpy as np
 import pandas as pd
+import re
 from dateutil.parser import parse
-import numpy as np
 
 from pandas_datareader.base import _BaseReader
-import json
-import re
+from pandas_datareader.compat import string_types
 
 
 class GoogleQuotesReader(_BaseReader):
@@ -20,7 +21,7 @@ def url(self):
     @property
     def params(self):
         """Parameters to use in API calls"""
-        if isinstance(self.symbols, pd.compat.string_types):
+        if isinstance(self.symbols, string_types):
             sym_list = self.symbols
         else:
             sym_list = ','.join(self.symbols)

pandas_datareader/io/jsdmx.py

@@ -1,13 +1,13 @@
 # pylint: disable-msg=E1101,W0613,W0603
 
 from __future__ import unicode_literals
+from collections import OrderedDict
 
 import itertools
 import sys
 
 import numpy as np
 import pandas as pd
-import pandas.compat as compat
 
 from pandas_datareader.io.util import _read_content
 
@@ -38,7 +38,7 @@ def read_jsdmx(path_or_buf):
     if isinstance(jdata, dict):
         data = jdata
     else:
-        data = json.loads(jdata, object_pairs_hook=compat.OrderedDict)
+        data = json.loads(jdata, object_pairs_hook=OrderedDict)
 
     structure = data['structure']
     index = _parse_dimensions(structure['dimensions']['observation'])
@@ -56,9 +56,9 @@ def read_jsdmx(path_or_buf):
 
 def _get_indexer(index):
     if index.nlevels == 1:
-        return [str(i) for i in compat.range(len(index))]
+        return [str(i) for i in range(len(index))]
     else:
-        it = itertools.product(*[compat.range(
+        it = itertools.product(*[range(
             len(level)) for level in index.levels])
         return [':'.join(map(str, i)) for i in it]
 
@@ -68,7 +68,7 @@ def _parse_values(dataset, index, columns):
     series = dataset['series']
 
     values = []
-    # for s_key, s_value in compat.iteritems(series):
+    # for s_key, s_value in iteritems(series):
     for s_key in _get_indexer(columns):
         try:
             observations = series[s_key]['observations']

pandas_datareader/io/sdmx.py

@@ -3,12 +3,12 @@
 import collections
 import time
 import zipfile
+from io import BytesIO
 
 import pandas as pd
-import pandas.compat as compat
 
 from pandas_datareader.io.util import _read_content
-from pandas_datareader.compat import HTTPError
+from pandas_datareader.compat import HTTPError, str_to_bytes
 
 
 _STRUCTURE = '{http://www.sdmx.org/resources/sdmxml/schemas/v2_1/structure}'
@@ -235,8 +235,8 @@ def _read_zipped_sdmx(path_or_buf):
     """ Unzipp data contains SDMX-XML """
     data = _read_content(path_or_buf)
 
-    zp = compat.BytesIO()
-    zp.write(compat.str_to_bytes(data))
+    zp = BytesIO()
+    zp.write(str_to_bytes(data))
     f = zipfile.ZipFile(zp)
     files = f.namelist()
     assert len(files) == 1