pythonwith...as能举例讲解以下with...有什么用法吗?请生动些,

Question

python with...as
能举例讲解以下with...有什么用法吗?
请生动些,

Answer 1

with open('abc.txt','r') as f:
balabalabala
等价于
try:
f = open('abc.txt','r')
except:
pass
else:
balabalabala
finally:
f.close()
语法是不是简洁多了?