Flake8 updating

lib/cartopy/__init__.py

@@ -12,6 +12,7 @@
 # Configuration
 import os.path
 
+
 # for the writable data directory (i.e. the one where new data goes), follow
 # the XDG guidelines found at
 # https://standards.freedesktop.org/basedir-spec/basedir-spec-latest.html
@@ -101,8 +102,7 @@
 except ImportError:
     pass
 
-
 # Commonly used sub-modules. Imported here to provide end-user
 # convenience.
-import cartopy.crs
-import cartopy.feature  # noqa: F401  (flake8 = unused import)
+import cartopy.crs  # noqa: E402  module-level imports
+import cartopy.feature  # noqa: E402,F401  (unused import)

lib/cartopy/crs.py

@@ -62,6 +62,7 @@ class Globe(object):
     Define an ellipsoid and, optionally, how to relate it to the real world.
 
     """
+
     def __init__(self, datum=None, ellipse='WGS84',
                  semimajor_axis=None, semiminor_axis=None,
                  flattening=None, inverse_flattening=None,
@@ -501,8 +502,8 @@ def transform_vectors(self, src_proj, x, y, u, v):
         #    perturbation to fix this.
         eps = 1e-9
         invalid_x = np.logical_or(
-            source_x + x_perturbations < src_proj.x_limits[0]-eps,
-            source_x + x_perturbations > src_proj.x_limits[1]+eps)
+            source_x + x_perturbations < src_proj.x_limits[0] - eps,
+            source_x + x_perturbations > src_proj.x_limits[1] + eps)
         if invalid_x.any():
             x_perturbations[invalid_x] *= -1
             y_perturbations[invalid_x] *= -1
@@ -511,8 +512,8 @@ def transform_vectors(self, src_proj, x, y, u, v):
         #    that will be outside the x-domain when the perturbation is
         #    applied.
         invalid_y = np.logical_or(
-            source_y + y_perturbations < src_proj.y_limits[0]-eps,
-            source_y + y_perturbations > src_proj.y_limits[1]+eps)
+            source_y + y_perturbations < src_proj.y_limits[0] - eps,
+            source_y + y_perturbations > src_proj.y_limits[1] + eps)
         if invalid_y.any():
             x_perturbations[invalid_y] *= -1
             y_perturbations[invalid_y] *= -1
@@ -523,8 +524,8 @@ def transform_vectors(self, src_proj, x, y, u, v):
         #    of the perturbation to get the perturbed point within the valid
         #    domain of the projection, and issue a warning if there are.
         problem_points = np.logical_or(
-            source_x + x_perturbations < src_proj.x_limits[0]-eps,
-            source_x + x_perturbations > src_proj.x_limits[1]+eps)
+            source_x + x_perturbations < src_proj.x_limits[0] - eps,
+            source_x + x_perturbations > src_proj.x_limits[1] + eps)
         if problem_points.any():
             warnings.warn('Some vectors at source domain corners '
                           'may not have been transformed correctly')
@@ -554,6 +555,7 @@ class Geodetic(CRS):
     geographical distance and coordinates are measured in degrees.
 
     """
+
     def __init__(self, globe=None):
         """
         Parameters
@@ -577,6 +579,7 @@ class Geocentric(CRS):
     coordinates from the center of the Earth.
 
     """
+
     def __init__(self, globe=None):
         """
         Parameters
@@ -606,6 +609,7 @@ class RotatedGeodetic(CRS):
     central_rotated_longitude value.
 
     """
+
     def __init__(self, pole_longitude, pole_latitude,
                  central_rotated_longitude=0.0, globe=None):
         """
@@ -1507,6 +1511,7 @@ class UTM(Projection):
     Universal Transverse Mercator projection.
 
     """
+
     def __init__(self, zone, southern_hemisphere=False, globe=None):
         """
         Parameters
@@ -1541,13 +1546,13 @@ def boundary(self):
     def x_limits(self):
         easting = 5e5
         # allow 50% overflow
-        return (0 - easting/2, 2 * easting + easting/2)
+        return (0 - easting / 2, 2 * easting + easting / 2)
 
     @property
     def y_limits(self):
         northing = 1e7
         # allow 50% overflow
-        return (0 - northing, 2 * northing + northing/2)
+        return (0 - northing, 2 * northing + northing / 2)
 
 
 class EuroPP(UTM):
@@ -1557,6 +1562,7 @@ class EuroPP(UTM):
     Ellipsoid is International 1924, Datum is ED50.
 
     """
+
     def __init__(self):
         globe = Globe(ellipse='intl')
         super().__init__(32, globe=globe)
@@ -2563,6 +2569,7 @@ class Geostationary(_Satellite):
     the satellite.
 
     """
+
     def __init__(self, central_longitude=0.0, satellite_height=35785831,
                  false_easting=0, false_northing=0, globe=None,
                  sweep_axis='y'):

lib/cartopy/feature/__init__.py

@@ -113,6 +113,7 @@ class Scaler:
     """
     General object for handling the scale of the geometries used in a Feature.
     """
+
     def __init__(self, scale):
         self._scale = scale
 
@@ -140,6 +141,7 @@ class AdaptiveScaler(Scaler):
     """
     Automatically select scale of geometries based on extent of plotted axes.
     """
+
     def __init__(self, default_scale, limits):
         """
         Parameters
@@ -198,6 +200,7 @@ class ShapelyFeature(Feature):
     shapely geometries.
 
     """
+
     def __init__(self, geometries, crs, **kwargs):
         """
         Parameters
@@ -227,6 +230,7 @@ class NaturalEarthFeature(Feature):
     See https://www.naturalearthdata.com/
 
     """
+
     def __init__(self, category, name, scale, **kwargs):
         """
         Parameters
@@ -345,6 +349,7 @@ class GSHHSFeature(Feature):
     instantiating multiple GSHHS artists, by reducing repeated file IO.
 
     """
+
     def __init__(self, scale='auto', levels=None, **kwargs):
         super().__init__(cartopy.crs.PlateCarree(), **kwargs)
 
@@ -424,6 +429,7 @@ class WFSFeature(Feature):
     This feature requires additional dependencies. If installed via pip,
     try ``pip install cartopy[ows]``.
     """
+
     def __init__(self, wfs, features, **kwargs):
         """
         Parameters

lib/cartopy/feature/nightshade.py

@@ -61,9 +61,9 @@ def __init__(self, date=None, delta=0.1, refraction=-0.83,
                                         pole_longitude=pole_lon,
                                         central_rotated_longitude=central_lon)
 
-        npts = int(180/delta)
-        x = np.empty(npts*2)
-        y = np.empty(npts*2)
+        npts = int(180 / delta)
+        x = np.empty(npts * 2)
+        y = np.empty(npts * 2)
 
         # Solve the equation for sunrise/sunset:
         # https://en.wikipedia.org/wiki/Sunrise_equation#Generalized_equation
@@ -72,7 +72,7 @@ def __init__(self, date=None, delta=0.1, refraction=-0.83,
         #       Therefore, the max/min latitude is +/- (90+refraction)
 
         # Fill latitudes up and then down
-        y[:npts] = np.linspace(-(90+refraction), 90+refraction, npts)
+        y[:npts] = np.linspace(-(90 + refraction), 90 + refraction, npts)
         y[npts:] = y[:npts][::-1]
 
         # Solve the generalized equation for omega0, which is the
@@ -131,9 +131,9 @@ def _julian_day(date):
         year -= 1
 
     B = 2 - year // 100 + (year // 100) // 4
-    C = ((second/60 + minute)/60 + hour)/24
+    C = ((second / 60 + minute) / 60 + hour) / 24
 
-    JD = (int(365.25*(year + 4716)) + int(30.6001*(month+1)) +
+    JD = (int(365.25 * (year + 4716)) + int(30.6001 * (month + 1)) +
           day + B - 1524.5 + C)
     return JD
 
@@ -162,32 +162,32 @@ def _solar_position(date):
     #       so we need to convert the values from deg2rad when taking sin/cos
 
     # Centuries from J2000
-    T_UT1 = (_julian_day(date) - 2451545.0)/36525
+    T_UT1 = (_julian_day(date) - 2451545.0) / 36525
 
     # solar longitude (deg)
-    lambda_M_sun = (280.460 + 36000.771*T_UT1) % 360
+    lambda_M_sun = (280.460 + 36000.771 * T_UT1) % 360
 
     # solar anomaly (deg)
-    M_sun = (357.5277233 + 35999.05034*T_UT1) % 360
+    M_sun = (357.5277233 + 35999.05034 * T_UT1) % 360
 
     # ecliptic longitude
-    lambda_ecliptic = (lambda_M_sun + 1.914666471*np.sin(np.deg2rad(M_sun)) +
-                       0.019994643*np.sin(np.deg2rad(2*M_sun)))
+    lambda_ecliptic = (lambda_M_sun + 1.914666471 * np.sin(np.deg2rad(M_sun)) +
+                       0.019994643 * np.sin(np.deg2rad(2 * M_sun)))
 
     # obliquity of the ecliptic (epsilon in Vallado's notation)
-    epsilon = 23.439291 - 0.0130042*T_UT1
+    epsilon = 23.439291 - 0.0130042 * T_UT1
 
     # declination of the sun
     delta_sun = np.rad2deg(np.arcsin(np.sin(np.deg2rad(epsilon)) *
                                      np.sin(np.deg2rad(lambda_ecliptic))))
 
     # Greenwich mean sidereal time (seconds)
     theta_GMST = (67310.54841 +
-                  (876600*3600 + 8640184.812866)*T_UT1 +
-                  0.093104*T_UT1**2 -
-                  6.2e-6*T_UT1**3)
+                  (876600 * 3600 + 8640184.812866) * T_UT1 +
+                  0.093104 * T_UT1**2 -
+                  6.2e-6 * T_UT1**3)
     # Convert to degrees
-    theta_GMST = (theta_GMST % 86400)/240
+    theta_GMST = (theta_GMST % 86400) / 240
 
     # Right ascension calculations
     numerator = (np.cos(np.deg2rad(epsilon)) *
@@ -200,7 +200,7 @@ def _solar_position(date):
 
     # longitude is opposite of Greenwich Hour Angle (GHA)
     # GHA == theta_GMST - alpha_sun
-    lon = -(theta_GMST-alpha_sun)
+    lon = -(theta_GMST - alpha_sun)
     if lon < -180:
         lon += 360
 

lib/cartopy/geodesic.py

@@ -22,7 +22,7 @@ class Geodesic:
 
     """
 
-    def __init__(self, radius=6378137.0, flattening=1/298.257223563):
+    def __init__(self, radius=6378137.0, flattening=1 / 298.257223563):
         """
         Parameters
         ----------

lib/cartopy/io/__init__.py

@@ -323,6 +323,7 @@ class RasterSource:
     .. _raster-source-interface:
 
     """
+
     def validate_projection(self, projection):
         """
         Raise an error if this raster source cannot provide images in the
@@ -370,6 +371,7 @@ class RasterSourceContainer(RasterSource):
     contained :class:`RasterSource`.
 
     """
+
     def __init__(self, contained_source):
         """
         Parameters
@@ -394,6 +396,7 @@ class PostprocessedRasterSource(RasterSourceContainer):
     post-processing step on the raster fetched from the contained source.
 
     """
+
     def __init__(self, contained_source, img_post_process):
         """
         Parameters

lib/cartopy/io/img_nest.py

@@ -176,12 +176,12 @@ def world_file_extent(worldfile_handle, im_shape):
                              'supported.')
         ul_corner = (float(lines[4]), float(lines[5]))
 
-        min_x, max_x = (ul_corner[0] - pix_size[0]/2.,
-                        ul_corner[0] + pix_size[0]*im_shape[0] -
-                        pix_size[0]/2.)
-        min_y, max_y = (ul_corner[1] - pix_size[1]/2.,
-                        ul_corner[1] + pix_size[1]*im_shape[1] -
-                        pix_size[1]/2.)
+        min_x, max_x = (ul_corner[0] - pix_size[0] / 2.,
+                        ul_corner[0] + pix_size[0] * im_shape[0] -
+                        pix_size[0] / 2.)
+        min_y, max_y = (ul_corner[1] - pix_size[1] / 2.,
+                        ul_corner[1] + pix_size[1] * im_shape[1] -
+                        pix_size[1] / 2.)
         return (min_x, max_x, min_y, max_y), pix_size
 
 

lib/cartopy/io/img_tiles.py

@@ -355,6 +355,7 @@ class Stamen(GoogleWTS):
      * https://github.com/migurski/DEM-Tools
 
     """
+
     def __init__(self, style='toner',
                  desired_tile_form='RGB', cache=False):
         super().__init__(desired_tile_form=desired_tile_form,
@@ -373,6 +374,7 @@ class MapboxTiles(GoogleWTS):
     For terms of service, see https://www.mapbox.com/tos/.
 
     """
+
     def __init__(self, access_token, map_id, cache=False):
         """
         Set up a new Mapbox tiles instance.
@@ -416,6 +418,7 @@ class MapboxStyleTiles(GoogleWTS):
     For terms of service, see https://www.mapbox.com/tos/.
 
     """
+
     def __init__(self, access_token, username, map_id, cache=False):
         """
         Set up a new instance to retrieve tiles from a Mapbox style.
@@ -457,6 +460,7 @@ class QuadtreeTiles(GoogleWTS):
     where the length of the quatree is the zoom level in Google Tile terms.
 
     """
+
     def _image_url(self, tile):
         return ('http://ecn.dynamic.t1.tiles.virtualearth.net/comp/'
                 f'CompositionHandler/{tile}?mkt=en-'
@@ -548,6 +552,7 @@ class OrdnanceSurvey(GoogleWTS):
     https://developer.ordnancesurvey.co.uk/os-api-framework-agreement.
     """
     # API Documentation: https://apidocs.os.uk/docs/os-maps-wmts
+
     def __init__(self,
                  apikey,
                  layer='Road',

lib/cartopy/io/shapereader.py

@@ -54,6 +54,7 @@ class Record:
     their associated geometry.
 
     """
+
     def __init__(self, shape, attributes, fields):
         self._shape = shape
 
@@ -108,6 +109,7 @@ class FionaRecord(Record):
     with the FionaReader.
 
     """
+
     def __init__(self, geometry, attributes):
         self._geometry = geometry
         self.attributes = attributes
@@ -122,6 +124,7 @@ class BasicReader:
     :meth:`~Reader.records` and :meth:`~Reader.geometries`.
 
     """
+
     def __init__(self, filename):
         # Validate the filename/shapefile
         self._reader = reader = shapefile.Reader(filename)
@@ -175,6 +178,7 @@ class FionaReader:
     :meth:`~Reader.records` and :meth:`~Reader.geometries`.
 
     """
+
     def __init__(self, filename, bbox=None):
         self._data = []