def foo(str,str2):
print str,str2
foo("hello","world!")
def welcome(*arg):
print arg
welcome("hello","world!")
def welcome(**arg):
print arg
welcome(name='lwp',age=100)
def foo(str,str2):
print str,str2
foo("hello","world!")
def welcome(*arg):
print arg
welcome("hello","world!")
def welcome(**arg):
print arg
welcome(name='lwp',age=100)