update to python 3

run.py

@@ -1,4 +1,5 @@
-#!/usr/bin/python
+#!/usr/bin/python3
+
 import math
 
 from datetime import timedelta
@@ -7,7 +8,7 @@ import locale
 import os
 
 start_year = 2019
-start_date = date(start_year, 01, 01)
+start_date = date(start_year, 1, 1)
 end_date = date(start_year, 12, 31)
 
 main_filename = "calender"
@@ -121,7 +122,7 @@ def tex_write_calender_overview(fd):
 \\setlength{\\tabcolsep}{0.9mm}
 ''')
     for month in range(1, 12 + 1):
-        m = date(start_year, month, 01)
+        m = date(start_year, month, 1)
 
         if (month - 1) % 2 == 0:
             fd.write('\\ \\newline\n\r')
@@ -138,7 +139,7 @@ def tex_write_calender_overview(fd):
 
         # print weeknames
         for i in range(0, 6 + 1):
-            curr_date = date(start_year, month, 01)
+            curr_date = date(start_year, month, 1)
             curr_date = curr_date + timedelta(days=i - curr_date.weekday())
 
             fd.write('\\textbf{' + curr_date.strftime('%a') + '} ')
@@ -149,7 +150,7 @@ def tex_write_calender_overview(fd):
 
         fd.write('\\hline')
 
-        curr_date = date(start_year, month, 01)
+        curr_date = date(start_year, month, 1)
         weekline = "            " + "  &" * curr_date.weekday()
         next_date = curr_date
         while curr_date.month == next_date.month:
@@ -182,8 +183,8 @@ def tex_write_weekly(fd):
     print_start_date = start_date - timedelta(days=start_date.weekday())
     print_end_date = end_date + timedelta(days=6 - end_date.weekday())
 
-    print print_start_date.isoformat()
-    print print_end_date.isoformat()
+    print(print_start_date.isoformat())
+    print(print_end_date.isoformat())
 
     fd.write('''
 %%%%%%%%%%%%%%%%%%%%%%%%%%%