list previous or following list elements

[antar2]

Hello


Suppose I have a textfile (text1.txt) with following four words:

Apple
balcony
cartridge
damned
paper
bold
typewriter

and I want to have a python script that prints the words following the
word starting with the letter b (which would be cartridge) or
differently put, a script that prints the element following a
specified element:

I am more experienced in Perl, and a beginner in python

I wrote a script that - of course - does not work, that should print
the element in a list following the element that starts with a b

import re
f = open('text1.txt ', 'r')
list1 = []
list2 = []
for line in f:
list1.append(li ne)
a = re.compile("^b" )
int = 0
while(int <= list1[-1]):
int = int + 1
a_match = a.search(list1[int])
if(a_match):
list2.append(li st1[int + 1])
print list2

I did not find information about addressing previous or following list
elements. So some help would be magnificent

Thanks a lot

[Zentrader]

Re: list previous or following list elements

To be completely correct, you should allow for the possibility that
the word found is the last word in the list
for j, word in enumerate(words ):
if (word.startswit h("b")) and (j+1 < len(words)):
print words[j+1]
break