param = 10
strdata='전역변수'

def func1():
    strdata='지역변수'
    print(strdata)
    
def func2(param):
    param = 1
    
def func3():
    global param
    param = 50
    
func1()
print(strdata)
print(param)
func2(param)
print(param)
func3()
print(param)

    