clean up comments and remove py2 parts

pylib/data.py

@@ -10,7 +10,6 @@
 
 .. moduleauthor:: Daniel Weschke <daniel.weschke@directbox.de>
 """
-from __future__ import print_function
 import math
 import pickle
 
@@ -44,7 +43,6 @@ def read(file_name, x_column, y_column, default=None, verbose=False):
     y = []
     for row in file:
       fields = re.split(r'\s+', row.strip())
-      #print(filds)
       x.append(float(fields[x_column]))
       y.append(float(fields[y_column]))
     file.close()
@@ -157,7 +155,6 @@ def seq(start, stop=None, step=1):
   exponent = max(start_exp, step_exp)  # no stop because it is an open bound
 
   n = int(math.ceil((stop - start)/float(step)))
-  #n = int((stop - start)/float(step))  # in py3 math.ceil returns int
   lst = []
   if n > 0:
     lst = [round(start + step*i, exponent) for i in range(n)]
@@ -192,5 +189,5 @@ def get_id(ids, uide):
   :returns: full id
   :rtype: str or int
   """
-  # we know it is a unique ending
+  # take first element, because we know it is a unique ending
   return [idi for idi in ids if idi.endswith(uide)][0]

pylib/date.py

@@ -10,7 +10,6 @@
    
 .. moduleauthor:: Daniel Weschke <daniel.weschke@directbox.de>
 """
-from __future__ import division, print_function, unicode_literals
 
 def gaußsche_osterformel(year):
   """Gaußsche Osterformel.

pylib/time_of_day.py

@@ -10,10 +10,8 @@
    
 .. moduleauthor:: Daniel Weschke <daniel.weschke@directbox.de>
 """
-from __future__ import division, print_function, unicode_literals
 from time import struct_time, mktime
 
-
 def in_seconds(time):
   """If time is `time.struct_time` convert to float seconds.