Hello everybody !!
I am trying to fill some doctests in the numerical/ folder, and it
looks like the -coverage flag does not like to see methods raising
exceptions...
sage -coverage sage/numerical/backends/cplex_backend.pyx
Missing documentation:
* int add_variable(self, lower_bound=0.0, upper_bound=None,
binary=False, continuous=False, integer=False, obj=0.0, name=None)
except -1: """ Add a variable. This amounts to adding a new column to
the matrix. By default, the variable is both positive and real. INPUT:
- ``lower_bound`` - the lower bound of the variable (default: 0) -
``upper_bound`` - the upper bound of the variable (default: ``None``)
- ``binary`` - ``True`` if the variable is binary (default:
``False``). - ``continuous`` - ``True`` if the variable is binary
(default: ``True``). - ``integer`` - ``True`` if the variable is
binary (default: ``False``). - ``obj`` - (optional) coefficient of
this variable in the objective function (default: 0.0) - ``name`` - an
optional name for the newly added variable (default: ``None``).
OUTPUT: The index of the newly created variable EXAMPLE:: sage: from
sage.numerical.backends.generic_backend import get_solver sage: p =
get_solver(solver = "CPLEX") # optional - CPLEX sage: p.ncols() #
optional - CPLEX 0 sage: p.add_variable() # optional - CPLEX 0 sage:
p.ncols() # optional - CPLEX 1 sage: p.add_variable(binary=True) #
optional - CPLEX 1 sage: p.add_variable(lower_bound=-2.0,
integer=True) # optional - CPLEX 2 sage:
p.add_variable(continuous=True, integer=True) # optional - CPLEX
Traceback (most recent call last):
* int solve(self) except -1: r""" Solves the problem. .. NOTE:: This
method raises ``MIPSolverException`` exceptions when the solution can
not be computed for any reason (none exists, or the LP solver was not
able to find it, etc...) EXAMPLE:: sage: from
sage.numerical.backends.generic_backend import get_solver sage: p =
get_solver(solver = "CPLEX") # optional - CPLEX sage:
p.add_linear_constraints(5, 0, None) # optional - CPLEX sage:
p.add_col(range(5), range(5)) # optional - CPLEX sage: p.solve() #
optional - CPLEX 0 sage: p.objective_coefficient(0,1) # optional -
CPLEX sage: p.solve() # optional - CPLEX Traceback (most recent call
last):
Any idea why, or how to fix it ? :-)
Nathann
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