sin ( print ( sin ( print (yin this case it worksbut assume you have different functions with the same name that have different meaning in different libraries [end of examplepython packages in addition to the python standard librarythere is growing collection of several thousand components (from individual programs and modules to packages and entire application development frameworks)available from the python package index python package index (pypi)here you can download and install individual python packages an easy alternative is the anaconda distributionwhere many of the most used python packages are included anaconda plotting in python typically you need to create some plots or charts in order to make plots or charts in python you will need an external library the most used library is matplotlib matplotlib is python plotting library here you find an overview of the matplotlib libraryif you are familiar with matlab and basic plotting in matlabusing the matplotlib is very similar the main difference from matlab is that you need to import the libraryeither the whole library or one or more functions for simplicity we import the whole library like this im po rt