Merge remote-tracking branch 'upstream/master' into plot_api

Author: Marc Garcia

asv_bench/benchmarks/indexing.py

@@ -5,7 +5,7 @@
 from pandas import (Series, DataFrame, MultiIndex,
                     Int64Index, UInt64Index, Float64Index,
                     IntervalIndex, CategoricalIndex,
-                    IndexSlice, concat, date_range)
+                    IndexSlice, concat, date_range, option_context)
 
 
 class NumericSeriesIndexing:
@@ -335,4 +335,20 @@ def time_assign_with_setitem(self):
             self.df[i] = np.random.randn(self.N)
 
 
+class ChainIndexing:
+
+    params = [None, 'warn']
+    param_names = ['mode']
+
+    def setup(self, mode):
+        self.N = 1000000
+
+    def time_chained_indexing(self, mode):
+        with warnings.catch_warnings(record=True):
+            with option_context('mode.chained_assignment', mode):
+                df = DataFrame({'A': np.arange(self.N), 'B': 'foo'})
+                df2 = df[df.A > self.N // 2]
+                df2['C'] = 1.0
+
+
 from .pandas_vb_common import setup  # noqa: F401

ci/azure/windows.yml

@@ -21,7 +21,9 @@ jobs:
       displayName: 'Add conda to PATH'
     - script: conda update -q -n base conda
       displayName: Update conda
-    - script: conda env create -q --file ci\\deps\\azure-windows-$(CONDA_PY).yaml
+    - script: |
+        call activate
+        conda env create -q --file ci\\deps\\azure-windows-$(CONDA_PY).yaml
       displayName: 'Create anaconda environment'
     - script: |
         call activate pandas-dev

ci/deps/travis-36-locale.yaml

@@ -8,24 +8,22 @@ dependencies:
   - python-blosc
   - cython>=0.28.2
   - fastparquet=0.2.1
-  - gcsfs=0.1.0
+  - gcsfs=0.2.2
   - html5lib
   - ipython
   - jinja2
-  - lxml=3.7.0
-  - matplotlib=3.0.0
+  - lxml=3.8.0
+  - matplotlib=3.0.*
   - nomkl
   - numexpr
   - numpy
   - openpyxl
   - pandas-gbq=0.8.0
   - psycopg2=2.6.2
-  - pymysql=0.7.9
+  - pymysql=0.7.11
   - pytables
   - python-dateutil
-  # cannot go past python=3.6.6 for matplotlib=3.0.0 due to
-  # https://github.com/matplotlib/matplotlib/issues/12626
-  - python=3.6.6
+  - python=3.6.*
   - pytz
   - s3fs=0.0.8
   - scipy

codecov.yml

@@ -1,13 +1,13 @@
 codecov:
   branch: master
 
+comment: off
+
 coverage:
   status:
     project:
       default:
-        enabled: no
         target: '82'
     patch:
       default:
-        enabled: no
         target: '50'

doc/source/development/contributing.rst

@@ -127,7 +127,7 @@ to build the documentation locally before pushing your changes.
 
 .. _contributing.dev_c:
 
-Installing a C Compiler
+Installing a C compiler
 ~~~~~~~~~~~~~~~~~~~~~~~
 
 Pandas uses C extensions (mostly written using Cython) to speed up certain
@@ -155,7 +155,7 @@ Let us know if you have any difficulties by opening an issue or reaching out on
 
 .. _contributing.dev_python:
 
-Creating a Python Environment
+Creating a Python environment
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 
 Now that you have a C compiler, create an isolated pandas development
@@ -209,7 +209,7 @@ See the full conda docs `here <http://conda.pydata.org/docs>`__.
 
 .. _contributing.pip:
 
-Creating a Python Environment (pip)
+Creating a Python environment (pip)
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 
 If you aren't using conda for your development environment, follow these instructions.
@@ -605,7 +605,7 @@ and run ``flake8`` on them, one after the other.
 
 .. _contributing.import-formatting:
 
-Import Formatting
+Import formatting
 ~~~~~~~~~~~~~~~~~
 *pandas* uses `isort <https://pypi.org/project/isort/>`__ to standardise import
 formatting across the codebase.
@@ -651,7 +651,7 @@ The `--recursive` flag can be passed to sort all files in a directory.
 
 You can then verify the changes look ok, then git :ref:`commit <contributing.commit-code>` and :ref:`push <contributing.push-code>`.
 
-Backwards Compatibility
+Backwards compatibility
 ~~~~~~~~~~~~~~~~~~~~~~~
 
 Please try to maintain backward compatibility. *pandas* has lots of users with lots of
@@ -699,7 +699,7 @@ See :ref:`contributing.warnings` for more.
 
 .. _contributing.ci:
 
-Testing With Continuous Integration
+Testing with continuous integration
 -----------------------------------
 
 The *pandas* test suite will run automatically on `Travis-CI <https://travis-ci.org/>`__ and
@@ -930,7 +930,7 @@ options or subtle interactions to test (or think of!) all of them.
 
 .. _contributing.warnings:
 
-Testing Warnings
+Testing warnings
 ~~~~~~~~~~~~~~~~
 
 By default, one of pandas CI workers will fail if any unhandled warnings are emitted.

doc/source/development/contributing_docstring.rst

@@ -929,7 +929,7 @@ plot will be generated automatically when building the documentation.
 
 .. _docstring.sharing:
 
-Sharing Docstrings
+Sharing docstrings
 ------------------
 
 Pandas has a system for sharing docstrings, with slight variations, between

doc/source/development/extending.rst

@@ -3,7 +3,7 @@
 {{ header }}
 
 ****************
-Extending Pandas
+Extending pandas
 ****************
 
 While pandas provides a rich set of methods, containers, and data types, your
@@ -12,7 +12,7 @@ pandas.
 
 .. _extending.register-accessors:
 
-Registering Custom Accessors
+Registering custom accessors
 ----------------------------
 
 Libraries can use the decorators
@@ -70,7 +70,7 @@ applies only to certain dtypes.
 
 .. _extending.extension-types:
 
-Extension Types
+Extension types
 ---------------
 
 .. versionadded:: 0.23.0
@@ -210,7 +210,7 @@ will
 
 .. _extending.extension.testing:
 
-Testing Extension Arrays
+Testing extension arrays
 ^^^^^^^^^^^^^^^^^^^^^^^^
 
 We provide a test suite for ensuring that your extension arrays satisfy the expected
@@ -238,7 +238,7 @@ for a list of all the tests available.
 
 .. _extending.subclassing-pandas:
 
-Subclassing pandas Data Structures
+Subclassing pandas data structures
 ----------------------------------
 
 .. warning:: There are some easier alternatives before considering subclassing ``pandas`` data structures.
@@ -260,7 +260,7 @@ This section describes how to subclass ``pandas`` data structures to meet more s
 
    You can find a nice example in `geopandas <https://github.com/geopandas/geopandas>`_ project.
 
-Override Constructor Properties
+Override constructor properties
 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
 
 Each data structure has several *constructor properties* for returning a new
@@ -348,7 +348,7 @@ Below example shows how to define ``SubclassedSeries`` and ``SubclassedDataFrame
    >>> type(sliced2)
    <class '__main__.SubclassedSeries'>
 
-Define Original Properties
+Define original properties
 ^^^^^^^^^^^^^^^^^^^^^^^^^^
 
 To let original data structures have additional properties, you should let ``pandas`` know what properties are added. ``pandas`` maps unknown properties to data names overriding ``__getattribute__``. Defining original properties can be done in one of 2 ways:

doc/source/development/internals.rst

@@ -102,7 +102,7 @@ So, for example, ``Series[category]._values`` is a ``Categorical``, while
 
 .. _ref-subclassing-pandas:
 
-Subclassing pandas Data Structures
+Subclassing pandas data structures
 ----------------------------------
 
 This section has been moved to :ref:`extending.subclassing-pandas`.

doc/source/ecosystem.rst

@@ -3,7 +3,7 @@
 {{ header }}
 
 ****************
-pandas Ecosystem
+Pandas ecosystem
 ****************
 
 Increasingly, packages are being built on top of pandas to address specific needs
@@ -26,7 +26,7 @@ substantial projects that you feel should be on this list, please let us know.
 
 .. _ecosystem.stats:
 
-Statistics and Machine Learning
+Statistics and machine learning
 -------------------------------
 
 `Statsmodels <https://www.statsmodels.org/>`__
@@ -243,7 +243,7 @@ you can obtain for free on the FRED website.
 
 .. _ecosystem.domain:
 
-Domain Specific
+Domain specific
 ---------------
 
 `Geopandas <https://github.com/kjordahl/geopandas>`__
@@ -332,7 +332,7 @@ and check that they're *actually* true.
 
 .. _ecosystem.extensions:
 
-Extension Data Types
+Extension data types
 --------------------
 
 Pandas provides an interface for defining

doc/source/getting_started/10min.rst

@@ -3,7 +3,7 @@
 {{ header }}
 
 ********************
-10 Minutes to pandas
+10 minutes to pandas
 ********************
 
 This is a short introduction to pandas, geared mainly for new users.
@@ -16,7 +16,7 @@ Customarily, we import as follows:
    import numpy as np
    import pandas as pd
 
-Object Creation
+Object creation
 ---------------
 
 See the :ref:`Data Structure Intro section <dsintro>`.
@@ -83,7 +83,7 @@ As you can see, the columns ``A``, ``B``, ``C``, and ``D`` are automatically
 tab completed. ``E`` is there as well; the rest of the attributes have been
 truncated for brevity.
 
-Viewing Data
+Viewing data
 ------------
 
 See the :ref:`Basics section <basics>`.
@@ -183,7 +183,7 @@ Selecting via ``[]``, which slices the rows.
    df[0:3]
    df['20130102':'20130104']
 
-Selection by Label
+Selection by label
 ~~~~~~~~~~~~~~~~~~
 
 See more in :ref:`Selection by Label <indexing.label>`.
@@ -224,7 +224,7 @@ For getting fast access to a scalar (equivalent to the prior method):
 
    df.at[dates[0], 'A']
 
-Selection by Position
+Selection by position
 ~~~~~~~~~~~~~~~~~~~~~
 
 See more in :ref:`Selection by Position <indexing.integer>`.
@@ -271,7 +271,7 @@ For getting fast access to a scalar (equivalent to the prior method):
 
    df.iat[1, 1]
 
-Boolean Indexing
+Boolean indexing
 ~~~~~~~~~~~~~~~~
 
 Using a single column's values to select data.
@@ -340,7 +340,7 @@ A ``where`` operation with setting.
    df2
 
 
-Missing Data
+Missing data
 ------------
 
 pandas primarily uses the value ``np.nan`` to represent missing data. It is by
@@ -580,7 +580,7 @@ With a "stacked" DataFrame or Series (having a ``MultiIndex`` as the
    stacked.unstack(1)
    stacked.unstack(0)
 
-Pivot Tables
+Pivot tables
 ~~~~~~~~~~~~
 See the section on :ref:`Pivot Tables <reshaping.pivot>`.
 
@@ -600,7 +600,7 @@ We can produce pivot tables from this data very easily:
    pd.pivot_table(df, values='D', index=['A', 'B'], columns=['C'])
 
 
-Time Series
+Time series
 -----------
 
 pandas has simple, powerful, and efficient functionality for performing
@@ -735,7 +735,7 @@ of the columns with labels:
    @savefig frame_plot_basic.png
    plt.legend(loc='best')
 
-Getting Data In/Out
+Getting data in/out
 -------------------
 
 CSV