Python with语句

class A:
    def __init__(self):
        print('__init__()')

    def __enter__(self):
        print('__enter__()')
    
    def __exit__(self, exc_type, exc_val, exc_tb):
        print('__exit__()')

with A() as a:
    print('run')

结果：

__init__()
__enter__()
run
__exit__()

标签：语句,__,exc,Python,self,init,exit,print
来源： https://www.cnblogs.com/rchang/p/15677899.html