Python生成器解析式和Zip函数介绍

生成器解析式

#!/usr/bin/env python3
# Author: nock

def inc(x):
	print('inc {0}'.format(x))
	return x + 1

# 生成一个迭代器对象
obj = (inc(x) for x in range(10))
print(obj)

Result:
 at 0x107d87678>

#!/usr/bin/env python3
# Author: nock

# 生成一个迭代器对象
obj = (x for x in range(10))
l = [x for x in range(10)]

print(next(obj))
print(next(obj))
print(next(obj))

print(l[4])
try:
	print(obj[1])
except Exception as e:  
	print("Exception is: {0}".format(e))	
print(next(obj))

0
1
2
4
Exception is: 'generator' object is not subscriptable
3

Zip