Revert "spectrumany.py: Code cleanup"

This reverts commit 6ef9cda.

Author: jlec

spectrumany.py

@@ -1,10 +1,10 @@
-"""
+'''
 http://pymolwiki.org/index.php/spectrumany
 
 (c) 2010 Thomas Holder
 
 License: BSD-2-Clause
-"""
+'''
 
 from __future__ import print_function
 
@@ -20,16 +20,16 @@
 
 
 def spectrumany(expression, color_list, selection='(all)', minimum=None, maximum=None, quiet=1):
-    """
-    DESCRIPTION
+    '''
+DESCRIPTION
 
     Define a color spectrum with as many color-stops as you like (at least 2).
 
-    USAGE
+USAGE
 
     spectrumany expression, color_list [, selection [, minimum [, maximum ]]]
 
-    ARGUMENTS
+ARGUMENTS
 
     expression = count, resi, b, q, or pc: respectively, atom count, residue
     index, temperature factor, occupancy, or partial charge {default: count}
@@ -38,15 +38,15 @@ def spectrumany(expression, color_list, selection='(all)', minimum=None, maximum
 
     ... all other arguments like with `spectrum` command
 
-    EXAMPLE
+EXAMPLE
 
     spectrumany count, forest green yellow white
     spectrumany b, red yellow white, (polymer), maximum=100.0
 
-    SEE ALSO
+SEE ALSO
 
     spectrum
-    """
+    '''
     quiet = int(quiet)
     colors = color_list.split()
     if len(colors) < 2:
@@ -67,7 +67,7 @@ def spectrumany(expression, color_list, selection='(all)', minimum=None, maximum
 
     if None in [minimum, maximum]:
         stored.e = list()
-        cmd.iterate(selection, 'stored.e.append(%s)' % minmax_expr)
+        cmd.iterate(selection, 'stored.e.append(%s)' % (minmax_expr))
         if minimum is None:
             minimum = min(stored.e)
         if maximum is None:
@@ -77,7 +77,7 @@ def spectrumany(expression, color_list, selection='(all)', minimum=None, maximum
         print(' Spectrum: range (%.5f to %.5f)' % (minimum, maximum))
 
     if maximum == minimum:
-        print('no spectrum possible, only equal %s values' % expression)
+        print('no spectrum possible, only equal %s values' % (expression))
         return
 
     if expression in discrete_expr: