python review introduction python is the programming language which can be used for various purposes web designmathematical modelingcreating documents and game designs etc in this we will review some of the basic features of python thenfrom next we will write some good coding styles with advance features of python notethis presents short review of python along with some good coding practices actual tutorial begins from next if you have basic knowledge of python and oops then you can skip this download and installation we will use python in this tutorial alsothese codes may not run in python ( or etc versions furtherthere are several useful libraries available for python for examplenumpy and scipy libraries contain various mathematical functions which are very useful in simulations matplotlib library is required to plot results and save these in various formats pdfjpeg or ps etc lastlyspyder environment is very helpful for storing the results obtained by the simulations alsospyder can save data as matfilewhich can be used by matlab software as well all these topics are briefly discussed in this tutorial for installationsimplest option is to download and install anaconda softwareas it contains various useful python libraries (including the libraries which are mentioned in above paragraph basics in this section'printcommand is used to show the code execution in python in pythoncode can be run in two waysi through 'python shellor 'by executing the python files'which are discussed next run code from python shell (go to terminal/command-prompt and type python as shown in listing this command will start the python shell with three 'greater thansigns nowwe can write our first command print('hello world')which prints the 'hello worldon the screen as shown in the listing further in line two placeholder '%sare usedwhich are replaced by the two words world and python as shown in line alsoafter executing the commandappear againwhich indicates that python shell is ready to get more commands notechoose correct command to open python