Initializing help system before first use

# problem.addConstraint

Purpose
Adds one or more constraints to the problem.
Synopsis
`problem.addConstraint(*constraints, name=None)`
Arguments

constraints | Constraints or list/tuples/array of constraints.
name | Optional name or names to assign to the constraints.

Example

    N = 20
    p = xpress.problem()
    x = [p.addVariable() for i in range(N)]
    c = [x[i] <= x[i+1] for i in range(N-1)]
    c2 = x[0] >= x[19]
    p.addConstraint(x[2] == x[4])
    p.addConstraint(c, c2)

Further information
1. All constraint arguments can be single xpress.constraint objects, or lists, tuples, NumPy arrays, generators, dictionaries or other iterable collections of xpress.constraint objects.
2. If the name argument is provided, then only a single constraint or a single collection of constraints may be provided in the positional arguments. The name argument must either be a collection of names with the same dimensions as the provided constraint collection, or a single name prefix. In this case, the name for each constraint will be produced by combining the name prefix with the index of the constraint within the collection.
Parent Topic Xpress problem object methods

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