Matplotlib Release 1.2.0 I User’s Guide 1 1 Introduction 3 2 Installing 5 2.1 Manually installing pre-built packages. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 2.2 Installing from source . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 2.3 Build requirement