Python 字典的复制--copy函数

# coding:utf-8

fruits = {
    'apple': 30,
    'banana': 50,
    'pear': 100
}

real_fruits = fruits.copy()
fruits['apple'] = 60
print(real_fruits)

real_fruits['orange'] = 50
real_fruits.update({'cherry': 100})

print(real_fruits)
# print(fruits)
real_fruits['apple'] = real_fruits['apple'] - 5
print(real_fruits)
real_fruits['pear'] -= 3
print(real_fruits)

real_fruits.clear()
print(real_fruits)
print('第二天......')
real_fruits = fruits.copy()
print(real_fruits)