Numpy 배열연산4

□ 브로드캐스팅

#브로드케스팅
arr1 = np.array([[0,0,0],[1,1,1],[2,2,2]])
arr2 = np.array([[5,6,7]])
print(f"arr1 :\n{arr1}")
print("\n")
print(f"arr2 :\n{arr2}")
print("\n")
print(f"arr1 + arr2 :\n{arr1+arr2}")
print("\n")

arr3 = np.array([[1,1,1]])
arr4 = np.array([[0],[1],[2]])
print(f"arr3 :\n{arr3}")
print("\n")
print(f"arr3 :\n{arr4}")
print("\n")
print(f"arr3 + arr4 :\n{arr3+arr4}")