start=datetime.date(2011, 9, 4)

start=datetime.date(2011, 9, 04)

start=datetime.date(2011, 09, 4)
File "/home/smirnov/PycharmProjects/eschool_cabinet/gtzo/views.py", line 466
    start=datetime.date(2011, 09, 4)
                               ^
SyntaxError: invalid token

>>> datetime.date(2012, 07, 4)
datetime.date(2012, 7, 4)
>>> datetime.date(2012, 08, 4)
  File "<input>", line 1
    datetime.date(2012, 08, 4)
                         ^
SyntaxError: invalid token

>>> 01
1
>>> 02
2
>>> 03
3
>>> 04
4
>>> 05
5
>>> 06
6
>>> 07
7
>>> 08
  File "<stdin>", line 1
    08
     ^
SyntaxError: invalid token
>>> 09
  File "<stdin>", line 1
    09
     ^
SyntaxError: invalid token
>>> 010
8
>>> 0010
8
>>> 0101
65