s = "Hello"
for char in s:
    print(f"{char}的ASCII码:{ord(char)}")
    print(f"ASCII码65对应的字符:{chr(65)}")
#因为图像是计算机天生能理解的数值，文本是需要“翻译+理解”的人类语言

A = [3,4]
B = [1,2]
add_res = [A[0]+B[0],A[1]+B[1]]
print("1.A+B=",add_res)
mul_res = [2*A[0],2*A[1]]
print("2.2xA=",mul_res)
mod_A = pow(A[0]**2+A[1]**2,0.5)
print("3.向量A的模=",mod_A)