# -*- coding: utf-8 -*-
"""
Created on Tue Sep 22 15:18:22 2020

@author: Sim
"""

#fcnarg2.py
def myfcn(me, you="unknown"):
    mystr = "I am {0}, you are {1}".format(me, you)
    return mystr

print(myfcn("Songyong", "student"))
print(myfcn("Songyong"))
#print(myfcn(you="student")) # error
print(myfcn(me="Songyong"))