none's, some more ``'s to variables and some other nones

Co-Authored-By: Cliff Hansen <5393711+cwhanse@users.noreply.github.com>

pvlib/iam.py

@@ -124,7 +124,7 @@ def physical(aoi, n=1.526, K=4.0, L=0.002, *, n_ar=None):
 
     n_ar : numeric, optional
         The effective index of refraction of the anti-reflective (AR) coating
-        (unitless). If n_ar is None (default), no AR coating is applied.
+        (unitless). If n_ar is not supplied, no AR coating is applied.
         A typical value for the effective index of an AR coating is 1.29.
 
     Returns
@@ -338,7 +338,7 @@ def martin_ruiz_diffuse(surface_tilt, a_r=0.16, c1=0.4244, c2=None):
     c2 : float
         Second fitting parameter for the expressions that approximate the
         integral of diffuse irradiance coming from different directions.
-        If c2 is None, it will be calculated according to the linear
+        If c2 is not specified, it will be calculated according to the linear
         relationship given in [3]_.
 
     Returns

pvlib/iotools/pvgis.py

@@ -90,7 +90,7 @@ def get_pvgis_hourly(latitude, longitude, start=None, end=None,
     userhorizon: list of float, default: None
         Optional user specified elevation of horizon in degrees, at equally
         spaced azimuth clockwise from north, only valid if ``usehorizon`` is
-        true, if ``usehorizon`` is true but ``userhorizon`` is ``None`` then
+        true, if ``usehorizon`` is true but ``userhorizon`` is not specified then
         PVGIS will calculate the horizon [4]_
     pvcalculation: bool, default: False
         Return estimate of hourly PV production.
@@ -312,7 +312,7 @@ def read_pvgis_hourly(filename, pvgis_format=None, map_variables=True):
     pvgis_format : str, optional
         Format of PVGIS file or buffer. Equivalent to the ``outputformat``
         parameter in the PVGIS API. If ``filename`` is a file and
-        ``pvgis_format`` is ``None`` then the file extension will be used to
+        ``pvgis_format`` is not specified then the file extension will be used to
         determine the PVGIS format to parse. If ``filename`` is a buffer, then
         ``pvgis_format`` is required and must be in ``['csv', 'json']``.
     map_variables: bool, default True
@@ -336,11 +336,11 @@ def read_pvgis_hourly(filename, pvgis_format=None, map_variables=True):
     Raises
     ------
     ValueError
-        if ``pvgis_format`` is ``None`` and the file extension is neither
+        if ``pvgis_format`` is not specified and the file extension is neither
         ``.csv`` nor ``.json`` or if ``pvgis_format`` is provided as
         input but isn't in ``['csv', 'json']``
     TypeError
-        if ``pvgis_format`` is ``None`` and ``filename`` is a buffer
+        if ``pvgis_format`` is not specified and ``filename`` is a buffer
 
     See Also
     --------
@@ -575,7 +575,7 @@ def read_pvgis_tmy(filename, pvgis_format=None, map_variables=True):
     pvgis_format : str, optional
         Format of PVGIS file or buffer. Equivalent to the ``outputformat``
         parameter in the PVGIS TMY API. If ``filename`` is a file and
-        ``pvgis_format`` is ``None`` then the file extension will be used to
+        ``pvgis_format`` is not specified then the file extension will be used to
         determine the PVGIS format to parse. For PVGIS files from the API with
         ``outputformat='basic'``, please set ``pvgis_format`` to ``'basic'``.
         If ``filename`` is a buffer, then ``pvgis_format`` is required and must
@@ -599,11 +599,11 @@ def read_pvgis_tmy(filename, pvgis_format=None, map_variables=True):
     Raises
     ------
     ValueError
-        if ``pvgis_format`` is ``None`` and the file extension is neither
+        if ``pvgis_format`` is not specified and the file extension is neither
         ``.csv``, ``.json``, nor ``.epw``, or if ``pvgis_format`` is provided
         as input but isn't in ``['csv', 'epw', 'json', 'basic']``
     TypeError
-        if ``pvgis_format`` is ``None`` and ``filename`` is a buffer
+        if ``pvgis_format`` is not specified and ``filename`` is a buffer
 
     See Also
     --------

pvlib/irradiance.py

@@ -441,7 +441,7 @@ def get_sky_diffuse(surface_tilt, surface_azimuth,
     ------
     ValueError
         If model is one of ``'haydavies'``, ``'reindl'``, or ``'perez'`` and
-        ``dni_extra`` is ``None``.
+        ``dni_extra`` is not specified.
 
     Notes
     -----

pvlib/pvsystem.py

@@ -130,9 +130,9 @@ class PVSystem:
         North=0, East=90, South=180, West=270.
 
     albedo : float, optional
-        Ground surface albedo. If ``None``, then ``surface_type`` is used
+        Ground surface albedo. If not supplied, then ``surface_type`` is used
         to look up a value in ``irradiance.SURFACE_ALBEDOS``.
-        If ``surface_type`` is also None then a ground surface albedo
+        If ``surface_type`` is also not supplied then a ground surface albedo
         of 0.25 is used.
 
     surface_type : string, optional
@@ -907,9 +907,9 @@ class Array:
         If not provided, a FixedMount with zero tilt is used.
 
     albedo : float, optional
-        Ground surface albedo. If ``None``, then ``surface_type`` is used
+        Ground surface albedo. If not supplied, then ``surface_type`` is used
         to look up a value in ``irradiance.SURFACE_ALBEDOS``.
-        If ``surface_type`` is also None then a ground surface albedo
+        If ``surface_type`` is also not supplied then a ground surface albedo
         of 0.25 is used.
 
     surface_type : string, optional

pvlib/solarposition.py

@@ -52,12 +52,12 @@ def get_solarposition(time, latitude, longitude,
         negative to west.
 
     altitude : float, optional
-        If not specified, computed from pressure. Assumed to be 0 m
-        if pressure is also None.
+        If not specified, computed from ``pressure``. Assumed to be 0 m
+        if ``pressure`` is not supplied.
 
     pressure : float, optional
-        If not specified, computed from altitude. Assumed to be 101325 Pa
-        if altitude is also None.
+        If not specified, computed from ``altitude``. Assumed to be 101325 Pa
+        if ``altitude`` is not supplied.
 
     method : string, default 'nrel_numpy'
         'nrel_numpy' uses an implementation of the NREL SPA algorithm