I have a textfile.txt like this:
First Line
Second Line
Third Line
Fourth Line
Fifth Line
Sixth Line
How can I remove the first three lines and the last line most comfortable?
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5 Answers
with open('textfile.txt') as old, open('newfile.txt', 'w') as new:
lines = old.readlines()
new.writelines(lines[3:-1])
Comments
This one doesn't use readlines() so it is ideal for bigger sized files.
numline=3 #3 lines to skip
p=""
o=open("output.txt","a")
f=open("file")
for i in range(numline):
f.next()
for line in f:
if p:
o.write(p)
p=line
f.close()
o.close()
Since there's a sed answer, here's an awk one
$ awk 'NR>=4{if(p)print p;p=$0;}' file
Fourth Line
Fifth Line
Comments
data="".join(open("textfile.txt").readlines()[3:-1])
open("newfile.txt","wb").write(data)
Comments
f = open('file1.txt').readlines()
open('file1.txt', 'w').writelines(lines[4:])
This code snippet will delete first four line from fie name "file1.txt"
1 Comment
quarkz
should be f = open('file1.txt').readlines() open('file1.txt', 'w').writelines(f[4:]) instead