从文件摘录中删除最后一行

Question

I'm trying to copy an excerpt from a txt file into a variable and then printing it. It looks for tomorrow's date, and then it prints everything between that and the current date. However, today's day is being printed, as it is located before today's date.

Eg:

Friday 24/5

[content im looking for]

Thursday 23/5

When I try to print this, it includes Thursday as well, which is not a part of what I want to print.

Do you guys have an easy way to remove the Thursday?

file=open("plan.txt","r")
s = file.read()
dayresult = ((s.split(str(tomorrowerino)))[1].split(str(todayerino))[0]).strip()
dayresult[dayresult.find('\n')+1:dayresult.rfind('\n')]
print dayresult

Here is what it outputs:

"

Geografi

Vi har geografi istedenfor samfunnsfag. Norsk

Les side 75 til 82, og gjør oppsummeringsoppgavene 1 til 10 side 83.

Torsdag

"

The second to last line is what I tried to use to remove the Torsdag, but it didn't do anything.

(Torsdag means Thursday, and that is what I want removed)

Also, the days will vary, so I can't just subtract that from the string.

(I have the code for the variables if you need them to help, but I don't see how they're relevant atm.)

Thank you :)

Answer 1

I'll leave it as an answer as well, for any who will encounter similar situations:

Whenever you use list slicing, it doesn't change the list (or any other sequence type variables like str , tuple , unicode ) it is called on, but creates a new one. You need to reassign the value of the sliced list to itself:

dayresult = dayresult[:dayresult.rfind('\n')]

Also, the slicing happens from the first character, until the last row.