CLN: assorted cleanups, mostly post-black fixups

asv_bench/benchmarks/ctors.py

@@ -67,7 +67,7 @@ class SeriesConstructors:
     def setup(self, data_fmt, with_index, dtype):
         if data_fmt in (gen_of_str, gen_of_tuples) and with_index:
             raise NotImplementedError(
-                "Series constructors do not support " "using generators with indexes"
+                "Series constructors do not support using generators with indexes"
             )
         N = 10 ** 4
         if dtype == "float":

asv_bench/benchmarks/eval.py

@@ -27,7 +27,7 @@ def time_add(self, engine, threads):
 
     def time_and(self, engine, threads):
         pd.eval(
-            "(self.df > 0) & (self.df2 > 0) & " "(self.df3 > 0) & (self.df4 > 0)",
+            "(self.df > 0) & (self.df2 > 0) & (self.df3 > 0) & (self.df4 > 0)",
             engine=engine,
         )
 

asv_bench/benchmarks/io/hdf.py

@@ -88,11 +88,11 @@ def time_write_store_table_dc(self):
 
     def time_query_store_table_wide(self):
         self.store.select(
-            "table_wide", where="index > self.start_wide and " "index < self.stop_wide"
+            "table_wide", where="index > self.start_wide and index < self.stop_wide"
         )
 
     def time_query_store_table(self):
-        self.store.select("table", where="index > self.start and " "index < self.stop")
+        self.store.select("table", where="index > self.start and index < self.stop")
 
     def time_store_repr(self):
         repr(self.store)

doc/make.py

@@ -128,7 +128,7 @@ def _sphinx_build(self, kind):
         >>> DocBuilder(num_jobs=4)._sphinx_build('html')
         """
         if kind not in ("html", "latex"):
-            raise ValueError("kind must be html or latex, " "not {}".format(kind))
+            raise ValueError("kind must be html or latex, not {}".format(kind))
 
         cmd = ["sphinx-build", "-b", kind]
         if self.num_jobs:
@@ -204,17 +204,11 @@ def _add_redirects(self):
 
                 path = os.path.join(BUILD_PATH, "html", *row[0].split("/")) + ".html"
 
-                try:
-                    title = self._get_page_title(row[1])
-                except Exception:
-                    # the file can be an ipynb and not an rst, or docutils
-                    # may not be able to read the rst because it has some
-                    # sphinx specific stuff
-                    title = "this page"
+                title = self._get_page_title(row[1])
 
                 if os.path.exists(path):
                     raise RuntimeError(
-                        ("Redirection would overwrite an existing file: " "{}").format(
+                        ("Redirection would overwrite an existing file: {}").format(
                             path
                         )
                     )

doc/source/conf.py

@@ -628,11 +628,11 @@ def linkcode_resolve(domain, info):
     fn = os.path.relpath(fn, start=os.path.dirname(pandas.__file__))
 
     if "+" in pandas.__version__:
-        return "http://github.com/pandas-dev/pandas/blob/master/pandas/" "{}{}".format(
+        return "http://github.com/pandas-dev/pandas/blob/master/pandas/{}{}".format(
             fn, linespec
         )
     else:
-        return "http://github.com/pandas-dev/pandas/blob/" "v{}/pandas/{}{}".format(
+        return "http://github.com/pandas-dev/pandas/blob/v{}/pandas/{}{}".format(
             pandas.__version__, fn, linespec
         )
 

doc/source/whatsnew/v1.0.0.rst

@@ -256,7 +256,7 @@ Timezones
 Numeric
 ^^^^^^^
 - Bug in :meth:`DataFrame.quantile` with zero-column :class:`DataFrame` incorrectly raising (:issue:`23925`)
-- :class:`DataFrame` inequality comparisons with object-dtype and ``complex`` entries failing to raise ``TypeError`` like their :class:`Series` counterparts (:issue:`28079`)
+- :class:`DataFrame` flex inequality comparisons with object-dtype and ``complex`` entries failing to raise ``TypeError`` like their :class:`Series` counterparts (:issue:`28079`)
 - Bug in :class:`DataFrame` logical operations (`&`, `|`, `^`) not matching :class:`Series` behavior by filling NA values (:issue:`28741`)
 -
 

pandas/_libs/reduction.pyx

@@ -170,9 +170,9 @@ cdef class Reducer:
                 PyArray_SETITEM(result, PyArray_ITER_DATA(it), res)
                 chunk.data = chunk.data + self.increment
                 PyArray_ITER_NEXT(it)
-        except Exception, e:
-            if hasattr(e, 'args'):
-                e.args = e.args + (i,)
+        except Exception as err:
+            if hasattr(err, 'args'):
+                err.args = err.args + (i,)
             raise
         finally:
             # so we don't free the wrong memory

pandas/_version.py

@@ -249,7 +249,7 @@ def git_pieces_from_vcs(tag_prefix, root, verbose, run_command=run_command):
         # tag
         full_tag = mo.group(1)
         if not full_tag.startswith(tag_prefix):
-            fmt = "tag '{full_tag}' doesn't start with prefix " "'{tag_prefix}'"
+            fmt = "tag '{full_tag}' doesn't start with prefix '{tag_prefix}'"
             msg = fmt.format(full_tag=full_tag, tag_prefix=tag_prefix)
             if verbose:
                 print(msg)

pandas/core/apply.py

@@ -341,13 +341,15 @@ def apply_series_generator(self):
                 for i, v in enumerate(series_gen):
                     results[i] = self.f(v)
                     keys.append(v.name)
-            except Exception as e:
-                if hasattr(e, "args"):
+            except Exception as err:
+                if hasattr(err, "args"):
 
                     # make sure i is defined
                     if i is not None:
                         k = res_index[i]
-                        e.args = e.args + ("occurred at index %s" % pprint_thing(k),)
+                        err.args = err.args + (
+                            "occurred at index %s" % pprint_thing(k),
+                        )
                 raise
 
         self.results = results

pandas/io/sas/sas7bdat.py

@@ -672,7 +672,7 @@ def _read_next_page(self):
             return True
         elif len(self._cached_page) != self._page_length:
             self.close()
-            msg = "failed to read complete page from file " "(read {:d} of {:d} bytes)"
+            msg = "failed to read complete page from file (read {:d} of {:d} bytes)"
             raise ValueError(msg.format(len(self._cached_page), self._page_length))
 
         self._read_page_header()

pandas/plotting/_core.py

@@ -685,7 +685,7 @@ def _get_call_args(backend_name, data, args, kwargs):
         else:
             raise TypeError(
                 (
-                    "Called plot accessor for type {}, expected " "Series or DataFrame"
+                    "Called plot accessor for type {}, expected Series or DataFrame"
                 ).format(type(data).__name__)
             )
 
@@ -740,7 +740,7 @@ def __call__(self, *args, **kwargs):
                 return plot_backend.plot(data, x=x, y=y, kind=kind, **kwargs)
             else:
                 raise ValueError(
-                    ("plot kind {} can only be used for " "data frames").format(kind)
+                    ("plot kind {} can only be used for data frames").format(kind)
                 )
         elif kind in self._series_kinds:
             if isinstance(data, ABCDataFrame):

pandas/plotting/_matplotlib/boxplot.py

@@ -331,9 +331,7 @@ def plot_group(keys, values, ax):
         if return_type is None:
             return_type = "axes"
         if layout is not None:
-            raise ValueError(
-                "The 'layout' keyword is not supported when " "'by' is None"
-            )
+            raise ValueError("The 'layout' keyword is not supported when 'by' is None")
 
         if ax is None:
             rc = {"figure.figsize": figsize} if figsize is not None else {}

pandas/plotting/_matplotlib/core.py

@@ -230,7 +230,7 @@ def _validate_color_args(self):
             "color" in self.kwds or "colors" in self.kwds
         ) and self.colormap is not None:
             warnings.warn(
-                "'color' and 'colormap' cannot be used " "simultaneously. Using 'color'"
+                "'color' and 'colormap' cannot be used simultaneously. Using 'color'"
             )
 
         if "color" in self.kwds and self.style is not None:

pandas/plotting/_matplotlib/hist.py

@@ -184,7 +184,7 @@ def _grouped_plot(
     if figsize == "default":
         # allowed to specify mpl default with 'default'
         warnings.warn(
-            "figsize='default' is deprecated. Specify figure " "size by tuple instead",
+            "figsize='default' is deprecated. Specify figure size by tuple instead",
             FutureWarning,
             stacklevel=5,
         )
@@ -298,9 +298,7 @@ def hist_series(
 
     if by is None:
         if kwds.get("layout", None) is not None:
-            raise ValueError(
-                "The 'layout' keyword is not supported when " "'by' is None"
-            )
+            raise ValueError("The 'layout' keyword is not supported when 'by' is None")
         # hack until the plotting interface is a bit more unified
         fig = kwds.pop(
             "figure", plt.gcf() if plt.get_fignums() else plt.figure(figsize=figsize)
@@ -394,7 +392,7 @@ def hist_frame(
     naxes = len(data.columns)
 
     if naxes == 0:
-        raise ValueError("hist method requires numerical columns, " "nothing to plot.")
+        raise ValueError("hist method requires numerical columns, nothing to plot.")
 
     fig, axes = _subplots(
         naxes=naxes,

pandas/plotting/_matplotlib/style.py

@@ -25,7 +25,7 @@ def _get_standard_colors(
     elif color is not None:
         if colormap is not None:
             warnings.warn(
-                "'color' and 'colormap' cannot be used " "simultaneously. Using 'color'"
+                "'color' and 'colormap' cannot be used simultaneously. Using 'color'"
             )
         colors = list(color) if is_list_like(color) else color
     else:

pandas/plotting/_matplotlib/tools.py

@@ -188,8 +188,7 @@ def _subplots(
             ax = _flatten(ax)
             if layout is not None:
                 warnings.warn(
-                    "When passing multiple axes, layout keyword is " "ignored",
-                    UserWarning,
+                    "When passing multiple axes, layout keyword is ignored", UserWarning
                 )
             if sharex or sharey:
                 warnings.warn(

pandas/tests/io/test_html.py

@@ -1233,8 +1233,8 @@ class ErrorThread(threading.Thread):
             def run(self):
                 try:
                     super().run()
-                except Exception as e:
-                    self.err = e
+                except Exception as err:
+                    self.err = err
                 else:
                     self.err = None
 

pandas/tests/window/test_window.py

@@ -65,7 +65,7 @@ def test_agg_function_support(self, arg):
         df = pd.DataFrame({"A": np.arange(5)})
         roll = df.rolling(2, win_type="triang")
 
-        msg = "'{arg}' is not a valid function for " "'Window' object".format(arg=arg)
+        msg = "'{arg}' is not a valid function for 'Window' object".format(arg=arg)
         with pytest.raises(AttributeError, match=msg):
             roll.agg(arg)
 

pandas/tseries/offsets.py

@@ -658,9 +658,7 @@ def __init__(self, start="09:00", end="17:00", offset=timedelta(0)):
 
         # Validation of input
         if len(start) != len(end):
-            raise ValueError(
-                "number of starting time and ending time " "must be the same"
-            )
+            raise ValueError("number of starting time and ending time must be the same")
         num_openings = len(start)
 
         # sort starting and ending time by starting time
@@ -2242,7 +2240,7 @@ def _parse_suffix(cls, varion_code, startingMonth_code, weekday_code):
             variation = "last"
         else:
             raise ValueError(
-                "Unable to parse varion_code: " "{code}".format(code=varion_code)
+                "Unable to parse varion_code: {code}".format(code=varion_code)
             )
 
         startingMonth = ccalendar.MONTH_TO_CAL_NUM[startingMonth_code]
@@ -2557,7 +2555,7 @@ def __init__(self, n=1, normalize=False):
         BaseOffset.__init__(self, n, normalize)
         if normalize:
             raise ValueError(
-                "Tick offset with `normalize=True` are not " "allowed."
+                "Tick offset with `normalize=True` are not allowed."
             )  # GH#21427
 
     __gt__ = _tick_comp(operator.gt)

pandas/util/_decorators.py

@@ -171,7 +171,7 @@ def deprecate_kwarg(
 
     if mapping is not None and not hasattr(mapping, "get") and not callable(mapping):
         raise TypeError(
-            "mapping from old to new argument values " "must be dict or callable!"
+            "mapping from old to new argument values must be dict or callable!"
         )
 
     def _deprecate_kwarg(func: F) -> F:
@@ -214,7 +214,7 @@ def wrapper(*args, **kwargs) -> Callable[..., Any]:
                 warnings.warn(msg, FutureWarning, stacklevel=stacklevel)
                 if kwargs.get(new_arg_name) is not None:
                     msg = (
-                        "Can only specify '{old_name}' or '{new_name}', " "not both"
+                        "Can only specify '{old_name}' or '{new_name}', not both"
                     ).format(old_name=old_arg_name, new_name=new_arg_name)
                     raise TypeError(msg)
                 else:

pandas/util/_exceptions.py

@@ -6,11 +6,11 @@ def rewrite_exception(old_name, new_name):
     """Rewrite the message of an exception."""
     try:
         yield
-    except Exception as e:
-        msg = e.args[0]
+    except Exception as err:
+        msg = err.args[0]
         msg = msg.replace(old_name, new_name)
         args = (msg,)
-        if len(e.args) > 1:
-            args = args + e.args[1:]
-        e.args = args
+        if len(err.args) > 1:
+            args = args + err.args[1:]
+        err.args = args
         raise

pandas/util/_print_versions.py

@@ -139,7 +139,7 @@ def main():
         "--json",
         metavar="FILE",
         nargs=1,
-        help="Save output as JSON into file, pass in " "'-' to output to stdout",
+        help="Save output as JSON into file, pass in '-' to output to stdout",
     )
 
     (options, args) = parser.parse_args()

pandas/util/_test_decorators.py

@@ -185,7 +185,7 @@ def skip_if_no(package: str, min_version: Optional[str] = None) -> Callable:
 )
 skip_if_not_us_locale = pytest.mark.skipif(
     _skip_if_not_us_locale(),
-    reason="Specific locale is set " "{lang}".format(lang=locale.getlocale()[0]),
+    reason="Specific locale is set {lang}".format(lang=locale.getlocale()[0]),
 )
 skip_if_no_scipy = pytest.mark.skipif(
     _skip_if_no_scipy(), reason="Missing SciPy requirement"

pandas/util/_validators.py

@@ -289,7 +289,7 @@ def validate_axis_style_args(data, args, kwargs, arg_name, method_name):
     # First fill with explicit values provided by the user...
     if arg_name in kwargs:
         if args:
-            msg = "{} got multiple values for argument " "'{}'".format(
+            msg = "{} got multiple values for argument '{}'".format(
                 method_name, arg_name
             )
             raise TypeError(msg)
@@ -318,7 +318,7 @@ def validate_axis_style_args(data, args, kwargs, arg_name, method_name):
     elif len(args) == 2:
         if "axis" in kwargs:
             # Unambiguously wrong
-            msg = "Cannot specify both 'axis' and any of 'index' " "or 'columns'"
+            msg = "Cannot specify both 'axis' and any of 'index' or 'columns'"
             raise TypeError(msg)
 
         msg = (

pandas/util/testing.py

@@ -1175,7 +1175,7 @@ def assert_series_equal(
             # vs Timestamp) but will compare equal
             if not Index(left.values).equals(Index(right.values)):
                 msg = (
-                    "[datetimelike_compat=True] {left} is not equal to " "{right}."
+                    "[datetimelike_compat=True] {left} is not equal to {right}."
                 ).format(left=left.values, right=right.values)
                 raise AssertionError(msg)
         else:
@@ -2363,34 +2363,34 @@ def wrapper(*args, **kwargs):
                 skip()
         try:
             return t(*args, **kwargs)
-        except Exception as e:
-            errno = getattr(e, "errno", None)
+        except Exception as err:
+            errno = getattr(err, "errno", None)
             if not errno and hasattr(errno, "reason"):
-                errno = getattr(e.reason, "errno", None)
+                errno = getattr(err.reason, "errno", None)
 
             if errno in skip_errnos:
                 skip(
                     "Skipping test due to known errno"
-                    " and error {error}".format(error=e)
+                    " and error {error}".format(error=err)
                 )
 
-            e_str = str(e)
+            e_str = str(err)
 
             if any(m.lower() in e_str.lower() for m in _skip_on_messages):
                 skip(
                     "Skipping test because exception "
-                    "message is known and error {error}".format(error=e)
+                    "message is known and error {error}".format(error=err)
                 )
 
-            if not isinstance(e, error_classes):
+            if not isinstance(err, error_classes):
                 raise
 
             if raise_on_error or can_connect(url, error_classes):
                 raise
             else:
                 skip(
                     "Skipping test due to lack of connectivity"
-                    " and error {error}".format(error=e)
+                    " and error {error}".format(error=err)
                 )
 
     return wrapper