function

py4E020

def functionname(parameter):
  if parameter == 'a':
    print("1")
  elif parameter == 'b':
    print("2")
  else:
    print("3")

#return values
def greet():
  return "hello"
print(greet(), "Ke")
print(greet(), "ee")

# multiple parameters/arguments
def addtwo(a,b):
  added= a+b
  return added
x= addtwo(2,3)
print(x)