How to check a variable’s type?
##To get the type of an object, you can use the built-in type() function.
##Passing an object as the only parameter will return the type object of
##that object
in what cases, you will get SyntaxError from the compiler telling you 
that some of your variables have invalid names? Can you give 3 
different examples of invalid names?
##3n='some thing'
##m@='some thing'
##and='some thing'
