Warranty Provisions Manipuation, a warranty python string manipulation a promise from the seller that the product will do what it is supposed to do for python string manipulation specific or reasonable time period, and that the seller will fix or replace it if it does not. Warranty provisions are included in most custom software development contracts. However, since this is an area of active pytnon between the developer and client, these provisions vary widely. Warranty of software performance. Warranties of software performance are typical in many contracts.