stri = ''
try:
for line in iter(input, stopword):
stri += line + '\n'
except EOFError:
pass
stri = stri[0:-1]
# do something……```
其中,stopword代表空字符船:当读取到最后一行之后,我们继续读取input就是空字符串,此时停止读取。
下面是python中自带iter的函数。第二个参数stopword的作用是停止符。
```def iter(source, sentinel=None): # known special case of iter
"""
iter(iterable) -> iterator
iter(callable, sentinel) -> iterator
Get an iterator from an object. In the first form, the argument must
supply its own iterator, or be a sequence.
In the second form, the callable is called until it returns the sentinel.
"""
pass```
潜下心,沉住气。