pandas-dev · joybh98 · Mar 17, 2020 · Mar 24, 2020 · Mar 31, 2020 · Mar 31, 2020
diff --git a/ci/code_checks.sh b/ci/code_checks.sh
@@ -237,6 +237,11 @@ if [[ -z "$CHECK" || "$CHECK" == "patterns" ]]; then
     invgrep -RI --exclude=\*.{svg,c,cpp,html,js} --exclude-dir=env "\s$" *
     RET=$(($RET + $?)) ; echo $MSG "DONE"
     unset INVGREP_APPEND
+
+    # Check if pandas is referenced as pandas, not *pandas*,Pandas or PANDAS
+    MSG='Checking if the pandas word reference is always used lowercase (pandas,not Pandas or PANDAS' ; echo  $MSG
+    invgrep -R '*pandas*|Pandas|PANDAS' web/* doc/
+    RET=$(($RET + $?)) ; echo $MSG "DONE"
 fi
 
 ### CODE ###
@@ -279,8 +284,8 @@ if [[ -z "$CHECK" || "$CHECK" == "doctests" ]]; then
     pytest -q --doctest-modules pandas/core/groupby/groupby.py -k"-cumcount -describe -pipe"
     RET=$(($RET + $?)) ; echo $MSG "DONE"
 
-    MSG='Doctests datetimes.py' ; echo $MSG
-    pytest -q --doctest-modules pandas/core/tools/datetimes.py
+    MSG='Doctests tools' ; echo $MSG
+    pytest -q --doctest-modules pandas/core/tools/
     RET=$(($RET + $?)) ; echo $MSG "DONE"
 
     MSG='Doctests reshaping functions' ; echo $MSG
@@ -323,6 +328,10 @@ if [[ -z "$CHECK" || "$CHECK" == "doctests" ]]; then
     MSG='Doctests tseries' ; echo $MSG
     pytest -q --doctest-modules pandas/tseries/
     RET=$(($RET + $?)) ; echo $MSG "DONE"
+
+    MSG='Doctests computation' ; echo $MSG
+    pytest -q --doctest-modules pandas/core/computation/
+    RET=$(($RET + $?)) ; echo $MSG "DONE"
 fi
 
 ### DOCSTRINGS ###

diff --git a/doc/source/development/contributing_docstring.rst b/doc/source/development/contributing_docstring.rst
@@ -160,7 +160,7 @@ backticks. The following are considered inline code:
 
 .. _docstring.short_summary:
 
-Section 1: Short summary
+Section 1: short summary
 ~~~~~~~~~~~~~~~~~~~~~~~~
 
 The short summary is a single sentence that expresses what the function does in
@@ -228,7 +228,7 @@ infinitive verb.
 
 .. _docstring.extended_summary:
 
-Section 2: Extended summary
+Section 2: extended summary
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~
 
 The extended summary provides details on what the function does. It should not
@@ -259,7 +259,7 @@ their use cases, if it is not too generic.
 
 .. _docstring.parameters:
 
-Section 3: Parameters
+Section 3: parameters
 ~~~~~~~~~~~~~~~~~~~~~
 
 The details of the parameters will be added in this section. This section has
@@ -424,7 +424,7 @@ For axis, the convention is to use something like:
 
 .. _docstring.returns:
 
-Section 4: Returns or Yields
+Section 4: returns or yields
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 
 If the method returns a value, it will be documented in this section. Also
@@ -505,7 +505,7 @@ If the method yields its value:
 
 .. _docstring.see_also:
 
-Section 5: See Also
+Section 5: see also
 ~~~~~~~~~~~~~~~~~~~
 
 This section is used to let users know about pandas functionality
@@ -583,7 +583,7 @@ For example:
 
 .. _docstring.notes:
 
-Section 6: Notes
+Section 6: notes
 ~~~~~~~~~~~~~~~~
 
 This is an optional section used for notes about the implementation of the
@@ -597,7 +597,7 @@ This section follows the same format as the extended summary section.
 
 .. _docstring.examples:
 
-Section 7: Examples
+Section 7: examples
 ~~~~~~~~~~~~~~~~~~~
 
 This is one of the most important sections of a docstring, despite being
@@ -998,4 +998,4 @@ mapping function names to docstrings. Wherever possible, we prefer using
 
 See ``pandas.core.generic.NDFrame.fillna`` for an example template, and
 ``pandas.core.series.Series.fillna`` and ``pandas.core.generic.frame.fillna``
-for the filled versions.
+for the filled versions.
diff --git a/doc/source/development/developer.rst b/doc/source/development/developer.rst
@@ -62,7 +62,7 @@ for each column, *including the index columns*. This has JSON form:
 
 See below for the detailed specification for these.
 
-Index Metadata Descriptors
+Index metadata descriptors
 ~~~~~~~~~~~~~~~~~~~~~~~~~~
 
 ``RangeIndex`` can be stored as metadata only, not requiring serialization. The
@@ -89,7 +89,7 @@ with other column names) a disambiguating name with pattern matching
 columns, ``name`` attribute is always stored in the column descriptors as
 above.
 
-Column Metadata
+Column metadata
 ~~~~~~~~~~~~~~~
 
 ``pandas_type`` is the logical type of the column, and is one of:
@@ -182,4 +182,4 @@ As an example of fully-formed metadata:
     'creator': {
       'library': 'pyarrow',
       'version': '0.13.0'
-    }}
+    }}
diff --git a/doc/source/development/extending.rst b/doc/source/development/extending.rst
@@ -210,7 +210,7 @@ will
 
 .. _extending.extension.ufunc:
 
-NumPy Universal Functions
+NumPy universal functions
 ^^^^^^^^^^^^^^^^^^^^^^^^^
 
 :class:`Series` implements ``__array_ufunc__``. As part of the implementation,
@@ -501,4 +501,4 @@ registers the default "matplotlib" backend as follows.
 
 
 More information on how to implement a third-party plotting backend can be found at
-https://github.com/pandas-dev/pandas/blob/master/pandas/plotting/__init__.py#L1.
+https://github.com/pandas-dev/pandas/blob/master/pandas/plotting/__init__.py#L1.
diff --git a/doc/source/development/maintaining.rst b/doc/source/development/maintaining.rst
@@ -1,7 +1,7 @@
 .. _maintaining:
 
 ******************
-Pandas Maintenance
+pandas maintenance
 ******************
 
 This guide is for pandas' maintainers. It may also be interesting to contributors
@@ -41,7 +41,7 @@ reading.
 
 .. _maintaining.triage:
 
-Issue Triage
+Issue triage
 ------------
 
 
@@ -123,7 +123,7 @@ Here's a typical workflow for triaging a newly opened issue.
 
 .. _maintaining.closing:
 
-Closing Issues
+Closing issues
 --------------
 
 Be delicate here: many people interpret closing an issue as us saying that the
@@ -132,7 +132,7 @@ respond or self-close their issue if it's determined that the behavior is not a
 or the feature is out of scope. Sometimes reporters just go away though, and
 we'll close the issue after the conversation has died.
 
-Reviewing Pull Requests
+Reviewing pull requests
 -----------------------
 
 Anybody can review a pull request: regular contributors, triagers, or core-team
@@ -144,7 +144,7 @@ members. Here are some guidelines to check.
 * User-facing changes should have a whatsnew in the appropriate file.
 * Regression tests should reference the original GitHub issue number like ``# GH-1234``.
 
-Cleaning up old Issues
+Cleaning up old issues
 ----------------------
 
 Every open issue in pandas has a cost. Open issues make finding duplicates harder,
@@ -164,7 +164,7 @@ If an older issue lacks a reproducible example, label it as "Needs Info" and
 ask them to provide one (or write one yourself if possible). If one isn't
 provide reasonably soon, close it according to the policies in :ref:`maintaining.closing`.
 
-Cleaning up old Pull Requests
+Cleaning up old pull requests
 -----------------------------
 
 Occasionally, contributors are unable to finish off a pull request.

diff --git a/doc/source/development/meeting.rst b/doc/source/development/meeting.rst
@@ -1,7 +1,7 @@
 .. _meeting:
 
 ==================
-Developer Meetings
+Developer meetings
 ==================
 
 We hold regular developer meetings on the second Wednesday
@@ -29,4 +29,3 @@ You can subscribe to this calendar with the following links:
 
 Additionally, we'll sometimes have one-off meetings on specific topics.
 These will be published on the same calendar.
-
diff --git a/doc/source/reference/general_utility_functions.rst b/doc/source/reference/general_utility_functions.rst
@@ -108,3 +108,11 @@ Scalar introspection
     api.types.is_re
     api.types.is_re_compilable
     api.types.is_scalar
+
+Bug report function
+-------------------
+.. autosummary::
+   :toctree: api/
+
+   show_versions
+
diff --git a/doc/source/user_guide/options.rst b/doc/source/user_guide/options.rst
@@ -140,7 +140,7 @@ More information can be found in the `ipython documentation
 
 .. _options.frequently_used:
 
-Frequently Used Options
+Frequently used options
 -----------------------
 The following is a walk-through of the more frequently used display options.
 

diff --git a/doc/source/user_guide/reshaping.rst b/doc/source/user_guide/reshaping.rst
@@ -272,7 +272,7 @@ the right thing:
 
 .. _reshaping.melt:
 
-Reshaping by Melt
+Reshaping by melt
 -----------------
 
 .. image:: ../_static/reshaping_melt.png

diff --git a/doc/source/user_guide/text.rst b/doc/source/user_guide/text.rst
@@ -8,7 +8,7 @@ Working with text data
 
 .. _text.types:
 
-Text Data Types
+Text data types
 ---------------
 
 .. versionadded:: 1.0.0
@@ -113,7 +113,7 @@ Everything else that follows in the rest of this document applies equally to
 
 .. _text.string_methods:
 
-String Methods
+String methods
 --------------
 
 Series and Index are equipped with a set of string processing methods
@@ -633,7 +633,7 @@ same result as a ``Series.str.extractall`` with a default index (starts from 0).
    pd.Series(["a1a2", "b1", "c1"], dtype="string").str.extractall(two_groups)
 
 
-Testing for Strings that match or contain a pattern
+Testing for strings that match or contain a pattern
 ---------------------------------------------------
 
 You can check whether elements contain a pattern:

diff --git a/doc/source/user_guide/timeseries.rst b/doc/source/user_guide/timeseries.rst
@@ -122,7 +122,7 @@ as ``np.nan`` does for float data.
 
 .. _timeseries.representation:
 
-Timestamps vs. Time Spans
+Timestamps vs. time spans
 -------------------------
 
 Timestamped data is the most basic type of time series data that associates
@@ -1434,7 +1434,7 @@ or calendars with additional rules.
 
 .. _timeseries.advanced_datetime:
 
-Time Series-Related Instance Methods
+Time series-related instance methods
 ------------------------------------
 
 Shifting / lagging

diff --git a/doc/source/user_guide/visualization.rst b/doc/source/user_guide/visualization.rst
@@ -796,7 +796,7 @@ before plotting.
 
 .. _visualization.tools:
 
-Plotting Tools
+Plotting tools
 --------------
 
 These functions can be imported from ``pandas.plotting``
@@ -1045,7 +1045,7 @@ for more information.
 
 .. _visualization.formatting:
 
-Plot Formatting
+Plot formatting
 ---------------
 
 Setting the plot style

diff --git a/doc/source/whatsnew/v1.1.0.rst b/doc/source/whatsnew/v1.1.0.rst
@@ -313,7 +313,7 @@ Timedelta
 Timezones
 ^^^^^^^^^
 
--
+- Bug in :func:`to_datetime` with ``infer_datetime_format=True`` where timezone names (e.g. ``UTC``) would not be parsed correctly (:issue:`33133`)
 -
 
 
@@ -471,6 +471,7 @@ Other
 - Fixed bug in :func:`pandas.testing.assert_series_equal` where dtypes were checked for ``Interval`` and ``ExtensionArray`` operands when ``check_dtype`` was ``False`` (:issue:`32747`)
 - Bug in :meth:`Series.map` not raising on invalid ``na_action`` (:issue:`32815`)
 - Bug in :meth:`DataFrame.__dir__` caused a segfault when using unicode surrogates in a column name (:issue:`25509`)
+- Bug in :meth:`DataFrame.plot.scatter` caused an error when plotting variable marker sizes (:issue:`32904`)
 
 .. ---------------------------------------------------------------------------
 

diff --git a/pandas/_libs/tslibs/conversion.pyx b/pandas/_libs/tslibs/conversion.pyx
@@ -8,8 +8,7 @@ cnp.import_array()
 import pytz
 
 # stdlib datetime imports
-from datetime import time as datetime_time
-from cpython.datetime cimport (datetime, tzinfo,
+from cpython.datetime cimport (datetime, time, tzinfo,
                                PyDateTime_Check, PyDate_Check,
                                PyDateTime_IMPORT)
 PyDateTime_IMPORT
@@ -284,7 +283,7 @@ cdef convert_to_tsobject(object ts, object tz, object unit,
         return convert_datetime_to_tsobject(ts, tz, nanos)
     elif PyDate_Check(ts):
         # Keep the converter same as PyDateTime's
-        ts = datetime.combine(ts, datetime_time())
+        ts = datetime.combine(ts, time())
         return convert_datetime_to_tsobject(ts, tz)
     elif getattr(ts, '_typ', None) == 'period':
         raise ValueError("Cannot convert Period to Timestamp "

diff --git a/pandas/_libs/tslibs/offsets.pyx b/pandas/_libs/tslibs/offsets.pyx
@@ -462,7 +462,7 @@ class _BaseOffset:
 
     def _validate_n(self, n):
         """
-        Require that `n` be a nonzero integer.
+        Require that `n` be an integer.
 
         Parameters
         ----------

diff --git a/pandas/_libs/tslibs/parsing.pyx b/pandas/_libs/tslibs/parsing.pyx
@@ -805,6 +805,7 @@ def _guess_datetime_format(dt_str, dayfirst=False, dt_str_parse=du_parse,
         (('second',), '%S', 2),
         (('microsecond',), '%f', 6),
         (('second', 'microsecond'), '%S.%f', 0),
+        (('tzinfo',), '%Z', 0),
     ]
 
     if dayfirst:

diff --git a/pandas/_libs/tslibs/period.pyx b/pandas/_libs/tslibs/period.pyx
@@ -1,5 +1,3 @@
-from datetime import datetime
-
 from cpython.object cimport PyObject_RichCompareBool, Py_EQ, Py_NE
 
 from numpy cimport int64_t, import_array, ndarray
@@ -13,6 +11,7 @@ from libc.string cimport strlen, memset
 import cython
 
 from cpython.datetime cimport (
+    datetime,
     PyDate_Check,
     PyDateTime_Check,
     PyDateTime_IMPORT,