import datetime
def namedFunc(a):
    return "I'm named function with param %s"% a

def call_func(func,param):
    print (datetime.datetime.now())
    print (func(param))
    print ("")

if __name__ == '__main__':
    call_func(namedFunc,'hello')
    call_func(lambda x: x*2,9)
    call_func(lambda y: y*y,-4)
