PS C:\Users\LENOVO\PycharmProjects\pythonProject3> pip install pypngpip
pip : The term 'pip' is not recognized as the name of a cmdlet, function, script file, or operable program. Check the spelling of the name, or if a path was included, verify that the 
path is correct and try again.
At line:1 char:1
+ pip install pypngpip
+ ~~~
    + CategoryInfo          : ObjectNotFound: (pip:String) [], CommandNotFoundException
    + FullyQualifiedErrorId : CommandNotFoundException
 
PS C:\Users\LENOVO\PycharmProjects\pythonProject3>