定义一个计数器Counter，包含私有变量，重载运算符“+，实现对象的相加c++”

class Counter:
def __init__(self, count=0):
self._count = count

def __repr__(self):
return f'Counter(count={self._count})'

def __add__(self, other):
return Counter(self._count + other._count)

def __lt__(self, other):
return self._count < other._count

def __le__(self, other):
return self._count <= other._count

def __eq__(self, other):
return self._count == other._count

def __ne__(self, other):
return self._count != other._count

def __gt__(self, other):
return self._count > other._count

def __ge__(self, other):
return self._count >= other._count

def __str__(self):
return f'Counter: {self._count}'

c1 = Counter(5)
c2 = Counter(10)
c3 = c1 + c2

print(c1)
print(c2)
print(c3) # Counter: 15