Global and local variables

Global variables: variables that can be called by different functions, classes, or files are defined outside the function. Local variables: they can only be used in functions and are defined in functions.

Use of local variables: class Myclass: def myFun (): num = 12 print "myFun num =" + num # correct def myFun2 (): num = num + 1 print "muFun num =" + num # error num * = 10 print "MyClass num =" + num # Use of the error global variable: class Myclass: global x # define the global variable x = 12 def myFun (self): num = x + 1 print "myFun num =" + str (num) # myFun num 13 c = Myclass () mc. myFun ()