check for E302

src/conftest.py

@@ -162,6 +162,7 @@ def pytest_addoption(parser):
         dest="doctest",
     )
 
+
 @pytest.fixture(autouse=True, scope="session")
 def add_imports(doctest_namespace: dict[str, Any]):
     """

src/doc/ja/tutorial/japanesesupport.py

@@ -2,6 +2,7 @@
 import re
 __RGX = re.compile(r'([^!-~])[\n\r\t]+([^!-~])')
 
+
 def trunc_whitespace(app, doctree, docname):
     from docutils.nodes import Text, paragraph
     if not app.config.japanesesupport_trunc_whitespace:
@@ -15,6 +16,7 @@ def trunc_whitespace(app, doctree, docname):
             #newtext = newtext.strip()
             node.parent.replace(node, Text(newtext))
 
+
 def setup(app):
     app.add_config_value('japanesesupport_trunc_whitespace', True, True)
     app.connect("doctree-resolved", trunc_whitespace)

src/sage/algebras/splitting_algebra.py

@@ -126,6 +126,8 @@ def monomial_coefficients(self):
 # ------------------------------------------------------------------------------------------------------------------
 # Parent class of the splitting algebra
 # --------------------------------------------------------------------------------------------------------
+
+
 class SplittingAlgebra(PolynomialQuotientRing_domain):
     r"""
     For a given monic polynomial `p(t)` of degree `n` over a commutative

src/sage/arith/misc.py

@@ -6375,6 +6375,7 @@ def dedekind_psi(N):
     N = Integer(N)
     return Integer(N * prod(1 + 1 / p for p in N.prime_divisors()))
 
+
 def smooth_part(x, base):
     r"""
     Given an element ``x`` of a Euclidean domain and a factor base ``base``,
@@ -6423,6 +6424,7 @@ def smooth_part(x, base):
     from sage.structure.factorization import Factorization
     return Factorization(fs)
 
+
 def coprime_part(x, base):
     r"""
     Given an element ``x`` of a Euclidean domain and a factor base ``base``,

src/sage/doctest/control.py

@@ -59,6 +59,7 @@
 
 auto_optional_tags = set()
 
+
 class DocTestDefaults(SageObject):
     """
     This class is used for doctesting the Sage doctest module.

src/sage/doctest/external.py

@@ -45,6 +45,7 @@
 # software xxx is available to Sage.
 prefix = 'has_'
 
+
 def has_internet():
     """
     Test if Internet is available.
@@ -61,6 +62,7 @@ def has_internet():
     from sage.features.internet import Internet
     return Internet().is_present()
 
+
 def has_latex():
     """
     Test if Latex is available.
@@ -74,6 +76,7 @@ def has_latex():
     from sage.features.latex import latex
     return latex().is_present()
 
+
 def has_xelatex():
     """
     Test if xelatex is available.
@@ -87,6 +90,7 @@ def has_xelatex():
     from sage.features.latex import xelatex
     return xelatex().is_present()
 
+
 def has_pdflatex():
     """
     Test if pdflatex is available.
@@ -100,6 +104,7 @@ def has_pdflatex():
     from sage.features.latex import pdflatex
     return pdflatex().is_present()
 
+
 def has_lualatex():
     """
     Test if lualatex is available.
@@ -113,6 +118,7 @@ def has_lualatex():
     from sage.features.latex import lualatex
     return lualatex().is_present()
 
+
 def has_magma():
     """
     Test if Magma is available.
@@ -126,6 +132,7 @@ def has_magma():
     from sage.features.interfaces import Magma
     return Magma().is_present()
 
+
 def has_matlab():
     """
     Test if Matlab is available.
@@ -139,6 +146,7 @@ def has_matlab():
     from sage.features.interfaces import Matlab
     return Matlab().is_present()
 
+
 def has_mathematica():
     """
     Test if Mathematica is available.
@@ -152,6 +160,7 @@ def has_mathematica():
     from sage.features.interfaces import Mathematica
     return Mathematica().is_present()
 
+
 def has_maple():
     """
     Test if Maple is available.
@@ -165,6 +174,7 @@ def has_maple():
     from sage.features.interfaces import Maple
     return Maple().is_present()
 
+
 def has_macaulay2():
     """
     Test if Macaulay2 is available.
@@ -178,6 +188,7 @@ def has_macaulay2():
     from sage.features.interfaces import Macaulay2
     return Macaulay2().is_present()
 
+
 def has_octave():
     """
     Test if Octave is available.
@@ -191,6 +202,7 @@ def has_octave():
     from sage.features.interfaces import Octave
     return Octave().is_present()
 
+
 def has_pandoc():
     """
     Test if pandoc is available.
@@ -204,6 +216,7 @@ def has_pandoc():
     from sage.features.pandoc import Pandoc
     return Pandoc().is_present()
 
+
 def has_scilab():
     """
     Test if Scilab is available.
@@ -221,6 +234,7 @@ def has_scilab():
     except Exception:
         return False
 
+
 def has_cplex():
     """
     Test if CPLEX is available.
@@ -234,6 +248,7 @@ def has_cplex():
     from sage.features.mip_backends import CPLEX
     return CPLEX().is_present()
 
+
 def has_gurobi():
     """
     Test if Gurobi is available.
@@ -247,6 +262,7 @@ def has_gurobi():
     from sage.features.mip_backends import Gurobi
     return Gurobi().is_present()
 
+
 def has_graphviz():
     """
     Test if graphviz (dot, twopi, neato) are available.
@@ -260,6 +276,7 @@ def has_graphviz():
     from sage.features.graphviz import Graphviz
     return Graphviz().is_present()
 
+
 def has_ffmpeg():
     """
     Test if ffmpeg is available.
@@ -273,6 +290,7 @@ def has_ffmpeg():
     from sage.features.ffmpeg import FFmpeg
     return FFmpeg().is_present()
 
+
 def has_imagemagick():
     """
     Test if ImageMagick (command magick or convert) is available.
@@ -286,6 +304,7 @@ def has_imagemagick():
     from sage.features.imagemagick import ImageMagick
     return ImageMagick().is_present()
 
+
 def has_dvipng():
     """
     Test if dvipng is available.
@@ -299,6 +318,7 @@ def has_dvipng():
     from sage.features.dvipng import dvipng
     return dvipng().is_present()
 
+
 def has_pdf2svg():
     """
     Test if pdf2svg is available.
@@ -312,6 +332,7 @@ def has_pdf2svg():
     from sage.features.pdf2svg import pdf2svg
     return pdf2svg().is_present()
 
+
 def has_rubiks():
     """
     Test if the rubiks package (``cu2``, ``cubex``, ``dikcube``,
@@ -326,6 +347,7 @@ def has_rubiks():
     from sage.features.rubiks import Rubiks
     return Rubiks().is_present()
 
+
 def has_4ti2():
     """
     Test if the 4ti2 package is available.
@@ -339,6 +361,7 @@ def has_4ti2():
     from sage.features.four_ti_2 import FourTi2
     return FourTi2().is_present()
 
+
 def external_features():
     r"""
     Generate the features that are only to be tested if ``--optional=external`` is used.
@@ -363,6 +386,7 @@ def external_features():
     yield CPLEX()
     yield Gurobi()
 
+
 def external_software() -> list[str]:
     """
     Return the alphabetical list of external software supported by this module.

src/sage/doctest/reporting.py

@@ -50,6 +50,7 @@
 from sage.doctest.sources import DictAsObject
 from .external import available_software
 
+
 def signal_name(sig):
     """
     Return a string describing a signal number.
@@ -91,6 +92,7 @@ def signal_name(sig):
         return "bus error"
     return "signal %s" % sig
 
+
 class DocTestReporter(SageObject):
     """
     This class reports to the users on the results of doctests.

src/sage/doctest/util.py

@@ -26,6 +26,7 @@
 from time import time as walltime
 from os import sysconf, times
 
+
 def count_noun(number, noun, plural=None, pad_number=False, pad_noun=False):
     """
     EXAMPLES::
@@ -614,6 +615,7 @@ def make_recording_dict(D, st, gt):
     ans.got = gt
     return ans
 
+
 class NestedName:
     """
     Class used to construct fully qualified names based on indentation level.

src/sage/features/__init__.py

@@ -418,6 +418,7 @@ def is_hidden(self):
             return True
         return False
 
+
 class FeatureNotPresentError(RuntimeError):
     r"""
     A missing feature error.

src/sage/features/dvipng.py

@@ -14,6 +14,7 @@
 
 from . import Executable
 
+
 class dvipng(Executable):
     r"""
     A :class:`~sage.features.Feature` describing the presence of ``dvipng``.

src/sage/features/ffmpeg.py

@@ -14,6 +14,7 @@
 
 from . import Executable, FeatureTestResult
 
+
 class FFmpeg(Executable):
     r"""
     A :class:`~sage.features.Feature` describing the presence of :ref:`ffmpeg <spkg_ffmpeg>`.

src/sage/features/fricas.py

@@ -16,6 +16,7 @@
 import subprocess
 from . import Executable, FeatureTestResult
 
+
 class FriCAS(Executable):
     r"""
     A :class:`~sage.features.Feature` which checks for the :ref:`fricas <fricas>` binary.
@@ -62,5 +63,6 @@ def is_functional(self):
 
         return FeatureTestResult(self, True)
 
+
 def all_features():
     return [FriCAS()]

src/sage/features/gap.py

@@ -16,6 +16,7 @@
 from .join_feature import JoinFeature
 from .sagemath import sage__libs__gap
 
+
 class GapPackage(Feature):
     r"""
     A :class:`~sage.features.Feature` describing the presence of a GAP package.

src/sage/features/giac.py

@@ -5,6 +5,7 @@
 
 from . import Executable, FeatureTestResult
 
+
 class Giac(Executable):
     r"""
     A :class:`~sage.features.Feature` describing the presence of :ref:`giac <spkg_giac>`.
@@ -26,5 +27,6 @@ def __init__(self):
         Executable.__init__(self, 'giac', executable='giac',
                             spkg='giac', type='standard')
 
+
 def all_features():
     return [Giac()]

src/sage/features/igraph.py

@@ -40,5 +40,6 @@ def __init__(self):
                              [PythonModule('igraph', spkg='python_igraph',
                                             url='http://igraph.org')])
 
+
 def all_features():
     return [python_igraph()]

src/sage/features/imagemagick.py

@@ -21,6 +21,7 @@
 from . import Executable, FeatureTestResult
 from .join_feature import JoinFeature
 
+
 class Magick(Executable):
     r"""
     A :class:`~sage.features.Feature` describing the presence of ``magick`` or the deprecated ``convert``.
@@ -134,5 +135,6 @@ def __init__(self):
                              spkg='imagemagick',
                              url='https://www.imagemagick.org/')
 
+
 def all_features():
     return [ImageMagick()]

src/sage/features/kenzo.py

@@ -18,6 +18,7 @@
 
 from . import Feature, FeatureTestResult
 
+
 class Kenzo(Feature):
     r"""
     A :class:`~sage.features.Feature` describing the presence of :ref:`Kenzo <spkg_kenzo>`.

src/sage/features/latex.py

@@ -208,6 +208,7 @@ def __init__(self):
         Executable.__init__(self, 'dvips', executable='dvips',
                             url='https://tug.org/texinfohtml/dvips.html')
 
+
 class TeXFile(StaticFile):
     r"""
     A :class:`sage.features.Feature` describing the presence of a TeX file.

src/sage/features/msolve.py

@@ -22,6 +22,7 @@
 from . import Executable
 from . import FeatureTestResult
 
+
 class msolve(Executable):
     r"""
     A :class:`~sage.features.Feature` describing the presence of :ref:`msolve <spkg_msolve>`.
@@ -64,5 +65,6 @@ def is_functional(self):
                                      reason="output of msolve -h not recognized")
         return FeatureTestResult(self, True)
 
+
 def all_features():
     return [msolve()]