Irregular last line in a text file, was Re: Regular expressions

[Peter Otten]

Tim Chase wrote:

> On 2015-11-03 16:35, Peter Otten wrote:
>> I wish there were a way to prohibit such files. Maybe a special
>> value
>> 
>> with open(..., newline="normalize") f:
>>     assert all(line.endswith("\n") for line in f)
>> 
>> to ensure that all lines end with "\n"?
> 
> Or even more valuable to me:
> 
>   with open(..., newline="strip") as f:
>     assert all(not line.endswith(("\n", "\r")) for line in f)
> 
> because I have countless loops that look something like
> 
>   with open(...) as f:
>     for line in f:
>       line = line.rstrip('\r\n')
>       process(line)

Indeed. It's obvious now you're saying it...