CLN: fix all flake8 warnings in pandas/tseries

pandas/tseries/api.py

@@ -2,6 +2,7 @@
 
 """
 
+# flake8: noqa
 
 from pandas.tseries.index import DatetimeIndex, date_range, bdate_range
 from pandas.tseries.frequencies import infer_freq

pandas/tseries/base.py

@@ -17,29 +17,28 @@
 import pandas.algos as _algos
 
 
-
 class DatelikeOps(object):
     """ common ops for DatetimeIndex/PeriodIndex, but not TimedeltaIndex """
 
     def strftime(self, date_format):
-        """
-        Return an array of formatted strings specified by date_format, which
-        supports the same string format as the python standard library. Details
-        of the string format can be found in the `python string format doc
-        <https://docs.python.org/2/library/datetime.html#strftime-and-strptime-behavior>`__
+        return np.asarray(self.format(date_format=date_format))
+    strftime.__doc__ = """
+    Return an array of formatted strings specified by date_format, which
+    supports the same string format as the python standard library. Details
+    of the string format can be found in `python string format doc <{0}>`__
 
-        .. versionadded:: 0.17.0
+    .. versionadded:: 0.17.0
 
-        Parameters
-        ----------
-        date_format : str
-            date format string (e.g. "%Y-%m-%d")
+    Parameters
+    ----------
+    date_format : str
+        date format string (e.g. "%Y-%m-%d")
 
-        Returns
-        -------
-        ndarray of formatted strings
-        """
-        return np.asarray(self.format(date_format=date_format))
+    Returns
+    -------
+    ndarray of formatted strings
+    """.format("https://docs.python.org/2/library/datetime.html"
+               "#strftime-and-strptime-behavior")
 
 
 class TimelikeOps(object):
@@ -68,7 +67,7 @@ def _round(self, freq, rounder):
         unit = to_offset(freq).nanos
 
         # round the local times
-        if getattr(self,'tz',None) is not None:
+        if getattr(self, 'tz', None) is not None:
             values = self.tz_localize(None).asi8
         else:
             values = self.asi8
@@ -81,7 +80,7 @@ def _round(self, freq, rounder):
         result = self._shallow_copy(result, **attribs)
 
         # reconvert to local tz
-        if getattr(self,'tz',None) is not None:
+        if getattr(self, 'tz', None) is not None:
             result = result.tz_localize(self.tz)
         return result
 
@@ -181,7 +180,9 @@ def __getitem__(self, key):
 
     @property
     def freqstr(self):
-        """ return the frequency object as a string if its set, otherwise None """
+        """
+        Return the frequency object as a string if its set, otherwise None
+        """
         if self.freq is None:
             return None
         return self.freq.freqstr
@@ -291,7 +292,8 @@ def _maybe_mask_results(self, result, fill_value=None, convert=None):
         -------
         result : ndarray with values replace by the fill_value
 
-        mask the result if needed, convert to the provided dtype if its not None
+        mask the result if needed, convert to the provided dtype if its not
+        None
 
         This is an internal routine
         """
@@ -408,7 +410,7 @@ def _format_attrs(self):
                 freq = self.freqstr
                 if freq is not None:
                     freq = "'%s'" % freq
-                attrs.append(('freq',freq))
+                attrs.append(('freq', freq))
         return attrs
 
     @cache_readonly
@@ -424,18 +426,21 @@ def resolution(self):
 
     def _convert_scalar_indexer(self, key, kind=None):
         """
-        we don't allow integer or float indexing on datetime-like when using loc
+        we don't allow integer or float indexing on datetime-like when using
+        loc
 
         Parameters
         ----------
         key : label of the slice bound
         kind : optional, type of the indexing operation (loc/ix/iloc/None)
         """
 
-        if kind in ['loc'] and lib.isscalar(key) and (is_integer(key) or is_float(key)):
-            self._invalid_indexer('index',key)
+        if (kind in ['loc'] and lib.isscalar(key) and
+                (is_integer(key) or is_float(key))):
+            self._invalid_indexer('index', key)
 
-        return super(DatetimeIndexOpsMixin, self)._convert_scalar_indexer(key, kind=kind)
+        return (super(DatetimeIndexOpsMixin, self)
+                ._convert_scalar_indexer(key, kind=kind))
 
     def _add_datelike(self, other):
         raise AbstractMethodError(self)
@@ -445,7 +450,10 @@ def _sub_datelike(self, other):
 
     @classmethod
     def _add_datetimelike_methods(cls):
-        """ add in the datetimelike methods (as we may have to override the superclass) """
+        """
+        add in the datetimelike methods (as we may have to override the
+        superclass)
+        """
 
         def __add__(self, other):
             from pandas.core.index import Index
@@ -454,14 +462,17 @@ def __add__(self, other):
             if isinstance(other, TimedeltaIndex):
                 return self._add_delta(other)
             elif isinstance(self, TimedeltaIndex) and isinstance(other, Index):
-                if hasattr(other,'_add_delta'):
+                if hasattr(other, '_add_delta'):
                     return other._add_delta(self)
-                raise TypeError("cannot add TimedeltaIndex and {typ}".format(typ=type(other)))
+                raise TypeError("cannot add TimedeltaIndex and {typ}"
+                                .format(typ=type(other)))
             elif isinstance(other, Index):
-                warnings.warn("using '+' to provide set union with datetimelike Indexes is deprecated, "
-                              "use .union()",FutureWarning, stacklevel=2)
+                warnings.warn("using '+' to provide set union with "
+                              "datetimelike Indexes is deprecated, "
+                              "use .union()", FutureWarning, stacklevel=2)
                 return self.union(other)
-            elif isinstance(other, (DateOffset, timedelta, np.timedelta64, tslib.Timedelta)):
+            elif isinstance(other, (DateOffset, timedelta, np.timedelta64,
+                                    tslib.Timedelta)):
                 return self._add_delta(other)
             elif com.is_integer(other):
                 return self.shift(other)
@@ -480,13 +491,16 @@ def __sub__(self, other):
                 return self._add_delta(-other)
             elif isinstance(self, TimedeltaIndex) and isinstance(other, Index):
                 if not isinstance(other, TimedeltaIndex):
-                    raise TypeError("cannot subtract TimedeltaIndex and {typ}".format(typ=type(other)))
+                    raise TypeError("cannot subtract TimedeltaIndex and {typ}"
+                                    .format(typ=type(other)))
                 return self._add_delta(-other)
             elif isinstance(other, Index):
-                warnings.warn("using '-' to provide set differences with datetimelike Indexes is deprecated, "
-                              "use .difference()",FutureWarning, stacklevel=2)
+                warnings.warn("using '-' to provide set differences with "
+                              "datetimelike Indexes is deprecated, "
+                              "use .difference()", FutureWarning, stacklevel=2)
                 return self.difference(other)
-            elif isinstance(other, (DateOffset, timedelta, np.timedelta64, tslib.Timedelta)):
+            elif isinstance(other, (DateOffset, timedelta, np.timedelta64,
+                                    tslib.Timedelta)):
                 return self._add_delta(-other)
             elif com.is_integer(other):
                 return self.shift(-other)
@@ -630,5 +644,5 @@ def summary(self, name=None):
             result += '\nFreq: %s' % self.freqstr
 
         # display as values, not quoted
-        result = result.replace("'","")
+        result = result.replace("'", "")
         return result

pandas/tseries/common.py

@@ -1,4 +1,6 @@
-## datetimelike delegation ##
+"""
+datetimelike delegation
+"""
 
 import numpy as np
 from pandas.core.base import PandasDelegate, NoNewAttributesMixin
@@ -8,20 +10,25 @@
 from pandas.tseries.tdi import TimedeltaIndex
 from pandas import tslib
 from pandas.core.common import (_NS_DTYPE, _TD_DTYPE, is_period_arraylike,
-                                is_datetime_arraylike, is_integer_dtype, is_list_like,
+                                is_datetime_arraylike, is_integer_dtype,
+                                is_list_like,
                                 is_datetime64_dtype, is_datetime64tz_dtype,
                                 is_timedelta64_dtype, is_categorical_dtype,
                                 get_dtype_kinds, take_1d)
 
+
 def is_datetimelike(data):
-    """ return a boolean if we can be successfully converted to a datetimelike """
+    """
+    return a boolean if we can be successfully converted to a datetimelike
+    """
     try:
         maybe_to_datetimelike(data)
         return True
     except (Exception):
         pass
     return False
 
+
 def maybe_to_datetimelike(data, copy=False):
     """
     return a DelegatedClass of a Series that is datetimelike
@@ -42,7 +49,8 @@ def maybe_to_datetimelike(data, copy=False):
     from pandas import Series
 
     if not isinstance(data, Series):
-        raise TypeError("cannot convert an object of type {0} to a datetimelike index".format(type(data)))
+        raise TypeError("cannot convert an object of type {0} to a "
+                        "datetimelike index".format(type(data)))
 
     index = data.index
     name = data.name
@@ -51,22 +59,28 @@ def maybe_to_datetimelike(data, copy=False):
         data = orig.values.categories
 
     if is_datetime64_dtype(data.dtype):
-        return DatetimeProperties(DatetimeIndex(data, copy=copy, freq='infer'), index, name=name,
-                                                orig=orig)
+        return DatetimeProperties(DatetimeIndex(data, copy=copy, freq='infer'),
+                                  index, name=name, orig=orig)
     elif is_datetime64tz_dtype(data.dtype):
-        return DatetimeProperties(DatetimeIndex(data, copy=copy, freq='infer', ambiguous='infer'),
+        return DatetimeProperties(DatetimeIndex(data, copy=copy, freq='infer',
+                                                ambiguous='infer'),
                                   index, data.name, orig=orig)
     elif is_timedelta64_dtype(data.dtype):
-        return TimedeltaProperties(TimedeltaIndex(data, copy=copy, freq='infer'), index,
+        return TimedeltaProperties(TimedeltaIndex(data, copy=copy,
+                                                  freq='infer'), index,
                                    name=name, orig=orig)
     else:
         if is_period_arraylike(data):
-            return PeriodProperties(PeriodIndex(data, copy=copy), index, name=name, orig=orig)
+            return PeriodProperties(PeriodIndex(data, copy=copy), index,
+                                    name=name, orig=orig)
         if is_datetime_arraylike(data):
-            return DatetimeProperties(DatetimeIndex(data, copy=copy, freq='infer'), index,
+            return DatetimeProperties(DatetimeIndex(data, copy=copy,
+                                                    freq='infer'), index,
                                       name=name, orig=orig)
 
-    raise TypeError("cannot convert an object of type {0} to a datetimelike index".format(type(data)))
+    raise TypeError("cannot convert an object of type {0} to a "
+                    "datetimelike index".format(type(data)))
+
 
 class Properties(PandasDelegate, NoNewAttributesMixin):
 
@@ -80,7 +94,7 @@ def __init__(self, values, index, name, orig=None):
     def _delegate_property_get(self, name):
         from pandas import Series
 
-        result = getattr(self.values,name)
+        result = getattr(self.values, name)
 
         # maybe need to upcast (ints)
         if isinstance(result, np.ndarray):
@@ -97,14 +111,16 @@ def _delegate_property_get(self, name):
         result = Series(result, index=self.index, name=self.name)
 
         # setting this object will show a SettingWithCopyWarning/Error
-        result.is_copy = ("modifications to a property of a datetimelike object are not "
-                          "supported and are discarded. Change values on the original.")
+        result.is_copy = ("modifications to a property of a datetimelike "
+                          "object are not supported and are discarded. "
+                          "Change values on the original.")
 
         return result
 
     def _delegate_property_set(self, name, value, *args, **kwargs):
-        raise ValueError("modifications to a property of a datetimelike object are not "
-                         "supported. Change values on the original.")
+        raise ValueError("modifications to a property of a datetimelike "
+                         "object are not supported. Change values on the "
+                         "original.")
 
     def _delegate_method(self, name, *args, **kwargs):
         from pandas import Series
@@ -118,8 +134,9 @@ def _delegate_method(self, name, *args, **kwargs):
         result = Series(result, index=self.index, name=self.name)
 
         # setting this object will show a SettingWithCopyWarning/Error
-        result.is_copy = ("modifications to a method of a datetimelike object are not "
-                          "supported and are discarded. Change values on the original.")
+        result.is_copy = ("modifications to a method of a datetimelike object "
+                          "are not supported and are discarded. Change "
+                          "values on the original.")
 
         return result
 
@@ -205,9 +222,10 @@ class PeriodProperties(Properties):
     Raises TypeError if the Series does not contain datetimelike values.
     """
 
-PeriodProperties._add_delegate_accessors(delegate=PeriodIndex,
-                                         accessors=PeriodIndex._datetimelike_ops,
-                                         typ='property')
+PeriodProperties._add_delegate_accessors(
+    delegate=PeriodIndex,
+    accessors=PeriodIndex._datetimelike_ops,
+    typ='property')
 PeriodProperties._add_delegate_accessors(delegate=PeriodIndex,
                                          accessors=["strftime"],
                                          typ='method')
@@ -222,8 +240,8 @@ class CombinedDatetimelikeProperties(DatetimeProperties, TimedeltaProperties):
 
 def _concat_compat(to_concat, axis=0):
     """
-    provide concatenation of an datetimelike array of arrays each of which is a single
-    M8[ns], datetimet64[ns, tz] or m8[ns] dtype
+    provide concatenation of an datetimelike array of arrays each of which is a
+    single M8[ns], datetimet64[ns, tz] or m8[ns] dtype
 
     Parameters
     ----------
@@ -258,24 +276,26 @@ def convert_to_pydatetime(x, axis):
     if 'datetimetz' in typs:
 
         # we require ALL of the same tz for datetimetz
-        tzs = set([ getattr(x,'tz',None) for x in to_concat ])-set([None])
+        tzs = set([getattr(x, 'tz', None) for x in to_concat]) - set([None])
         if len(tzs) == 1:
-            return DatetimeIndex(np.concatenate([ x.tz_localize(None).asi8 for x in to_concat ]), tz=list(tzs)[0])
+            return DatetimeIndex(np.concatenate([x.tz_localize(None).asi8
+                                                 for x in to_concat]),
+                                 tz=list(tzs)[0])
 
     # single dtype
     if len(typs) == 1:
 
-        if not len(typs-set(['datetime'])):
+        if not len(typs - set(['datetime'])):
             new_values = np.concatenate([x.view(np.int64) for x in to_concat],
                                         axis=axis)
             return new_values.view(_NS_DTYPE)
 
-        elif not len(typs-set(['timedelta'])):
+        elif not len(typs - set(['timedelta'])):
             new_values = np.concatenate([x.view(np.int64) for x in to_concat],
                                         axis=axis)
             return new_values.view(_TD_DTYPE)
 
     # need to coerce to object
     to_concat = [convert_to_pydatetime(x, axis) for x in to_concat]
 
-    return np.concatenate(to_concat,axis=axis)
+    return np.concatenate(to_concat, axis=axis)