revert pytz

Author: jreback

ci/environment-dev.yaml

@@ -9,6 +9,6 @@ dependencies:
   - pytest>=3.1
   - python-dateutil>=2.5.0
   - python=3
-  - pytz>=2016.1
+  - pytz
   - setuptools
   - sphinx

ci/requirements-2.7.build

@@ -1,6 +1,6 @@
 python=2.7*
 python-dateutil=2.5.0
-pytz=2016.1
+pytz=2013b
 nomkl
 numpy
 cython=0.23

ci/requirements-2.7.run

@@ -1,5 +1,5 @@
 python-dateutil=2.5.0
-pytz=2016.1
+pytz=2013b
 numpy
 xlwt=0.7.5
 numexpr

ci/requirements-2.7_COMPAT.build

@@ -2,4 +2,4 @@ python=2.7*
 numpy=1.9.2
 cython=0.23
 python-dateutil=2.5.0
-pytz=2016.1
+pytz=2013b

ci/requirements-2.7_COMPAT.run

@@ -1,6 +1,6 @@
 numpy=1.9.2
 python-dateutil=2.5.0
-pytz=2016.1
+pytz=2013b
 scipy=0.14.0
 xlwt=0.7.5
 xlrd=0.9.2

ci/requirements-2.7_LOCALE.build

@@ -1,5 +1,5 @@
 python=2.7*
 python-dateutil
-pytz=2016.1
+pytz=2013b
 numpy=1.9.2
 cython=0.23

ci/requirements_dev.txt

@@ -5,6 +5,6 @@ NumPy
 moto
 pytest>=3.1
 python-dateutil>=2.5.0
-pytz>=2016.1
+pytz
 setuptools
 sphinx

conda.recipe/meta.yaml

@@ -21,7 +21,7 @@ requirements:
     - python
     - numpy x.x
     - python-dateutil >=2.5.0
-    - pytz >=2016.1
+    - pytz
 
 test:
   imports:

doc/source/install.rst

@@ -201,7 +201,7 @@ Dependencies
 * `setuptools <https://setuptools.readthedocs.io/en/latest/>`__
 * `NumPy <http://www.numpy.org>`__: 1.9.0 or higher
 * `python-dateutil <//https://dateutil.readthedocs.io/en/stable/>`__: 2.5 or higher
-* `pytz <http://pytz.sourceforge.net/>`__: 2016.1 or higher.
+* `pytz <http://pytz.sourceforge.net/>`__
 
 .. _install.recommended_dependencies:
 

doc/source/io.rst

@@ -2935,7 +2935,7 @@ Writing Excel Files to Memory
 +++++++++++++++++++++++++++++
 
 Pandas supports writing Excel files to buffer-like objects such as ``StringIO`` or
-``BytesIO`` using :class:`~pandas.io.excel.ExcelWriter`. Pandas also supports Openpyxl >= 2.2.
+``BytesIO`` using :class:`~pandas.io.excel.ExcelWriter`.
 
 .. code-block:: python
 
@@ -2991,9 +2991,7 @@ files if `Xlsxwriter`_ is not available.
 To specify which writer you want to use, you can pass an engine keyword
 argument to ``to_excel`` and to ``ExcelWriter``. The built-in engines are:
 
-- ``openpyxl``: This includes stable support for Openpyxl from 1.6.1. However,
-  it is advised to use version 2.2 and higher, especially when working with
-  styles.
+- ``openpyxl``: version 2.4 or higher is required
 - ``xlsxwriter``
 - ``xlwt``