Expression

Constructor

Expression([exp, name])	Creates a mathematical expression to represent model components
Auxiliary(base[, prefix, suffix, operator, …])	Represents an auxiliary expression, often as a symbolic attribute
Symbol(name)	Represents a symbolic string, to be evaluated on server-side

General methods

Expression.set_name(self[, name])	Specifies the name of the expression
Expression.set_permanent(self)	Converts a temporary expression into a permanent one
Expression.set_temporary(self)	Converts expression into a temporary expression to enable in-place operations
Expression.get_name(self)	Returns the name of the object
Expression.get_value(self)	Calculates and returns the value of the linear expression
Expression.get_dual(self)	Returns the dual value

Operations

Expression.add(self, other[, sign])	Combines two expressions and produces a new one
Expression.copy(self[, name])	Returns a copy of the Expression object
Expression.mult(self, other)	Multiplies the Expression by a scalar value
Expression.get_member(self, key)	Returns the requested member of the expression
Expression.get_member_dict(self)	Returns an ordered dictionary of elements
Expression.get_member_value(self, key)	Returns coefficient of requested member
Expression.get_constant(self)	Returns the constant term in the expression
Expression.set_member(self, key, ref, val[, op])	Adds a new member or changes an existing member
Expression.set_member_value(self, key, value)	Changes the coefficient of the requested member
Expression.add_to_member_value(self, key, value)	Adds value to the coefficient of the requested member
Expression.mult_member_value(self, key, value)	Multiplies the coefficient of the requested member by the specified value
Expression.copy_member(self, key, exp)	Copies the member of another expression
Expression.delete_member(self, key)	Deletes the requested member from the core dictionary

Class methods

Expression.to_expression(obj)

Private Methods

Expression._expr(self)	Generates the OPTMODEL-compatible string representation of the object
Expression._is_linear(self)	Checks whether the expression is composed of linear components
Expression._relational(self, other, direction_)	Creates a logical relation between Expression objects
Expression.__repr__(self)	Returns a string representation of the object
Expression.__str__(self)	Generates a representation string that is Python-compatible