str.split unintentionally strips char 'I' from the string

[Govind]

BPO	4054
Nosy	@vstinner
Files	file.txt: This is the input file that I used to reproduce this issue

^{Note: these values reflect the state of the issue at the time it was migrated and might not reflect the current state.}

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GitHub fields:

assignee = None
closed_at = <Date 2008-10-06.13:09:08.062>
created_at = <Date 2008-10-06.13:04:29.422>
labels = ['type-bug', 'invalid']
title = "str.split unintentionally strips char 'I' from the string"
updated_at = <Date 2008-10-06.13:09:08.060>
user = 'https://bugs.python.org/Govind'

bugs.python.org fields:

activity = <Date 2008-10-06.13:09:08.060>
actor = 'vstinner'
assignee = 'none'
closed = True
closed_date = <Date 2008-10-06.13:09:08.062>
closer = 'vstinner'
components = []
creation = <Date 2008-10-06.13:04:29.422>
creator = 'Govind'
dependencies = []
files = ['11710']
hgrepos = []
issue_num = 4054
keywords = []
message_count = 2.0
messages = ['74368', '74370']
nosy_count = 2.0
nosy_names = ['vstinner', 'Govind']
pr_nums = []
priority = 'normal'
resolution = 'not a bug'
stage = None
status = 'closed'
superseder = None
type = 'behavior'
url = 'https://bugs.python.org/issue4054'
versions = []

[Govind]

I tried to process a text file (with UTF-8 encoding) which has
contents like this:

FILE=India
asbds
FILE=Indonasia
ssgsds
FILE=Africa
DBGDGDFG

When I use the below code:
>>> f = open("e:\\temp\\file.txt", 'r')
>>> lines = f.readlines()
>>> for line in lines:
	if line.startswith("FILE="):
		print line.strip("FILE=")

I get output as:
ndia

ndonasia

Africa

I is always stripped if it follows the substring that I want to strip
off.

Am I doing something wrong here or is this a bug in Python?

-Govind

[vstinner]

It's not a bug. Please read the documentation of the split() method:
http://docs.python.org/library/stdtypes.html#str.split

If you want to get the value after "=", use:
value = line.split("FILE=", 1)[1]
or:
value = line[len('FILE='):]
or:
value = line.partition('FILE=')[2]
or:
etc.