fix whitespace

Author: wholmgren

pvlib/atmosphere.py

@@ -1,5 +1,5 @@
 """
-The ``atmosphere`` module contains methods to calculate 
+The ``atmosphere`` module contains methods to calculate
 relative and absolute airmass and to determine
 pressure from altitude or vice versa.
 """
@@ -29,7 +29,7 @@ def pres2alt(pressure):
     Returns
     -------
     altitude : scalar or Series
-        Altitude in meters above sea level 
+        Altitude in meters above sea level
 
     Notes
     ------
@@ -66,7 +66,7 @@ def alt2pres(altitude):
     Parameters
     ----------
     Altitude : scalar or Series
-        Altitude in meters above sea level 
+        Altitude in meters above sea level
 
     Returns
     -------
@@ -103,26 +103,26 @@ def alt2pres(altitude):
 
 def absoluteairmass(airmass_relative, pressure=101325.):
     '''
-    Determine absolute (pressure corrected) airmass from relative 
+    Determine absolute (pressure corrected) airmass from relative
     airmass and pressure
 
     Gives the airmass for locations not at sea-level (i.e. not at standard
     pressure). The input argument "AMrelative" is the relative airmass. The
     input argument "pressure" is the pressure (in Pascals) at the location
     of interest and must be greater than 0. The calculation for
     absolute airmass is
-    
+
     .. math::
         absolute airmass = (relative airmass)*pressure/101325
 
     Parameters
     ----------
 
-    airmass_relative : scalar or Series	
-        The airmass at sea-level. 
+    airmass_relative : scalar or Series
+        The airmass at sea-level.
 
     pressure : scalar or Series
-        The site pressure in Pascal. 
+        The site pressure in Pascal.
 
     Returns
     -------
@@ -131,7 +131,7 @@ def absoluteairmass(airmass_relative, pressure=101325.):
 
     References
     ----------
-    [1] C. Gueymard, "Critical analysis and performance assessment of 
+    [1] C. Gueymard, "Critical analysis and performance assessment of
     clear sky solar irradiance models using theoretical and measured data,"
     Solar Energy, vol. 51, pp. 121-138, 1993.
 
@@ -147,26 +147,26 @@ def relativeairmass(zenith, model='kastenyoung1989'):
     Gives the relative (not pressure-corrected) airmass.
 
     Gives the airmass at sea-level when given a sun zenith angle
-    (in degrees). 
+    (in degrees).
     The ``model`` variable allows selection of different airmass models
-    (described below). If ``model`` is not 
+    (described below). If ``model`` is not
     included or is not valid, the default model is 'kastenyoung1989'.
 
     Parameters
     ----------
 
-    zenith : float or Series 
-        Zenith angle of the sun in degrees.  
+    zenith : float or Series
+        Zenith angle of the sun in degrees.
         Note that some models use the apparent (refraction corrected)
         zenith angle, and some models use the true
         (not refraction-corrected) zenith angle.
         See model descriptions to determine which type of zenith
         angle is required.
         Apparent zenith angles must be calculated at sea level.
-  
-    model : String 
+
+    model : String
         Available models include the following:
-        
+
         * 'simple' - secant(apparent zenith angle) -
           Note that this gives -inf at zenith=90
         * 'kasten1966' - See reference [1] - requires apparent sun zenith
@@ -178,8 +178,8 @@ def relativeairmass(zenith, model='kastenyoung1989'):
 
     Returns
     -------
-    airmass_relative : float or Series 
-        Relative airmass at sea level.  Will return NaN values for any 
+    airmass_relative : float or Series
+        Relative airmass at sea level.  Will return NaN values for any
         zenith angle greater than 90 degrees.
 
     References
@@ -190,31 +190,31 @@ def relativeairmass(zenith, model='kastenyoung1989'):
     Army Material Command, CRREL.
 
     [2] A. T. Young and W. M. Irvine, "Multicolor Photoelectric Photometry
-    of the Brighter Planets," The Astronomical Journal, vol. 72, 
+    of the Brighter Planets," The Astronomical Journal, vol. 72,
     pp. 945-950, 1967.
 
     [3] Fritz Kasten and Andrew Young. "Revised optical air mass tables and
     approximation formula". Applied Optics 28:4735-4738
 
-    [4] C. Gueymard, "Critical analysis and performance assessment of 
+    [4] C. Gueymard, "Critical analysis and performance assessment of
     clear sky solar irradiance models using theoretical and measured data,"
     Solar Energy, vol. 51, pp. 121-138, 1993.
 
-    [5] A. T. Young, "AIR-MASS AND REFRACTION," Applied Optics, vol. 33, 
+    [5] A. T. Young, "AIR-MASS AND REFRACTION," Applied Optics, vol. 33,
     pp. 1108-1110, Feb 1994.
 
     [6] Keith A. Pickering. "The Ancient Star Catalog". DIO 12:1, 20,
-    
+
     [7] Matthew J. Reno, Clifford W. Hansen and Joshua S. Stein,
     "Global Horizontal Irradiance Clear Sky Models: Implementation and Analysis"
     Sandia Report, (2012).
     '''
-    
+
     z = zenith
     zenith_rad = np.radians(z)
-    
+
     model = model.lower()
-    
+
     if 'kastenyoung1989' == model:
         AM = ( 1.0 / (np.cos(zenith_rad) +
             0.50572*(((6.07995 + (90 - z)) ** - 1.6364))) )
@@ -242,10 +242,10 @@ def relativeairmass(zenith, model='kastenyoung1989'):
                            model)
         AM = ( 1.0 / (np.cos(zenith_rad) +
             0.50572*(((6.07995 + (90 - z)) ** - 1.6364))) )
-    
+
     try:
         AM[z > 90] = np.nan
     except TypeError:
         AM = np.nan if z > 90 else AM
-        
+
     return AM

pvlib/test/test_atmosphere.py

@@ -15,7 +15,7 @@
 
 
 # setup times and location to be tested.
-times = pd.date_range(start=datetime.datetime(2014,6,24), 
+times = pd.date_range(start=datetime.datetime(2014,6,24),
                       end=datetime.datetime(2014,6,26), freq='1Min')
 
 tus = Location(32.2, -111, 'US/Arizona', 700)
@@ -30,7 +30,7 @@
 
 def test_pres2alt():
     atmosphere.pres2alt(100000)
-    
+
 def test_alt2press():
     atmosphere.pres2alt(1000)
 
@@ -46,7 +46,7 @@ def test_airmasses():
 def run_airmass(model, zenith):
     atmosphere.relativeairmass(zenith, model)
 
-    
+
 def test_absoluteairmass():
     relative_am = atmosphere.relativeairmass(ephem_data['zenith'], 'simple')
     atmosphere.absoluteairmass(relative_am)