sqlalchemy: fix default integer constructor

* Addresses issue with default constructor on types that do not
  accept arguments in SQLAlchemy>=0.9. (closes #1776)

Signed-off-by: Leonardo Rossi <leonardo.r@cern.ch>
1: D400 First line should end with '.', not 'y'
1: D205 Blank line missing between one-line summary and description
1: D208 Docstring is over-indented
86:8: E111 indentation is not a multiple of four
86:8: E113 unexpected indentation
87:8: E111 indentation is not a multiple of four
87:8: E113 unexpected indentation
122: D103 Docstring missing
126:1: F999 redefinition of unused 'compile_text' from line 120
127: D103 Docstring missing
131: D101 Docstring missing
132: D102 Docstring missing
135: D102 Docstring missing
142: D401 First line should be imperative: 'Call', not 'Calls'
142: D400 First line should end with '.', not '5'
156: D203 Expected 1 blank line *before* class docstring, found 0
161: D102 Docstring missing
173: D102 Docstring missing
181: D102 Docstring missing
187: D401 First line should be imperative: 'Thi', not 'This'
187: D200 One-line docstring should not occupy 3 lines