change way doing depr modules

Author: jreback

pandas/__init__.py

@@ -53,9 +53,7 @@
 from pandas.tools.util import to_numeric
 from pandas.core.reshape import melt
 from pandas.util.print_versions import show_versions
-
 from pandas.io.api import *
-
 from pandas.util._tester import test
 
 # extension module deprecations

pandas/json.py

@@ -0,0 +1,7 @@
+# flake8: noqa
+
+import warnings
+warnings.warn("The pandas.json module is deprecated and will be "
+              "removed in a future version. Please import from "
+              "the pandas.io.json instead", FutureWarning, stacklevel=2)
+from pandas.io.json.libjson import dumps, loads

pandas/parser.py

@@ -0,0 +1,7 @@
+# flake8: noqa
+
+import warnings
+warnings.warn("The pandas.parser module is deprecated and will be "
+              "removed in a future version. Please import from "
+              "the pandas.io.parser instead", FutureWarning, stacklevel=2)
+from pandas.io.libparsers import na_values

pandas/tests/api/test_api.py

@@ -225,3 +225,19 @@ def test_deprecation_access_obj(self):
         with tm.assert_produces_warning(FutureWarning,
                                         check_stacklevel=False):
             pd.datetools.monthEnd
+
+
+class TestJson(tm.TestCase):
+
+    def test_deprecation_access_func(self):
+        with tm.assert_produces_warning(FutureWarning,
+                                        check_stacklevel=False):
+            pd.json.dumps([])
+
+
+class TestParser(tm.TestCase):
+
+    def test_deprecation_access_func(self):
+        with tm.assert_produces_warning(FutureWarning,
+                                        check_stacklevel=False):
+            pd.parser.na_values

pandas/tests/frame/test_to_csv.py

@@ -8,7 +8,7 @@
 import numpy as np
 
 from pandas.compat import (lmap, range, lrange, StringIO, u)
-from pandas.parser import ParserError
+from pandas.io.common import ParserError
 from pandas import (DataFrame, Index, Series, MultiIndex, Timestamp,
                     date_range, read_csv, compat, to_datetime)
 import pandas as pd

pandas/tests/types/test_io.py

@@ -73,7 +73,7 @@ def test_convert_sql_column_decimals(self):
         self.assert_numpy_array_equal(result, expected)
 
     def test_convert_downcast_int64(self):
-        from pandas.parser import na_values
+        from pandas.io.libparsers import na_values
 
         arr = np.array([1, 2, 7, 8, 10], dtype=np.int64)
         expected = np.array([1, 2, 7, 8, 10], dtype=np.int8)