title: PULP , CPLEX or GUROBI for Mixed Integer Programming (MIP)
body: <p>I am interested to develop a code who uses PulP.
  I Have some questions and I Will be very gratful if you can help me.</p>
  
  <p>•   Does PulP have a restriction in the number of linear constraint or integer variables?
  •   If I have a problem with many constraintes or integer variables, Have I to buy a solver like CPLEX or Gurobi</p>
  
  <p>I really thank you for your time.</p>