建立一个复数类 Complex,具体内容不限,但必须实现以下功能: a. 含两个私有数据成员:实部real, 虚部img,都是float类型 b.分别用函数实现复数的构造、数据修改、显示复数、复数之间的复制、比较两个复数是否相等

class Complex:
def __init__(self, real, img):
self.real = real
self.img = img

def set_real(self, real):
self.real = real

def set_img(self, img):
self.img = img

def get_real(self):
return self.real

def get_img(self):
return self.img

def display(self):
if self.img >= 0:
print(f"{self.real}+{self.img}i")
else:
print(f"{self.real}{self.img}i")

def copy(self):
return Complex(self.real, self.img)

def is_equal(self, other):
if self.real == other.real and self.img == other.img:
return True
else:
return False