siddhartha veedaluru wrote:
Hi,
Your problem is nothing to do with Windows at all; a better target would
have been the comp.lang.python newsgroup or the [EMAIL PROTECTED]
mailing list [but NOT both; messages are gatewayed both ways].
As part of a task i need to verify that last line of a text file is blank.
When i read that file, its getting ignored and i couldn't able to check
that.
Here is the code snippet that i used:
import os
You don't use "os" ...
iniFileName = "Config.ini"
iniFile = open(iniFileName, 'r')
lines = iniFile.readlines()
noOfLines = len(lines)
if lines[noOfLines] == "":
You say "its getting ignored"; I say it should raise an IndexError
exception (see below). When asking about a problem, always show the
exact code that you ran, and any output (including any traceback and
error message).
>>> lines = ['a\n', 'b\n', '\n']
>>> n = len(lines)
>>> lines[n]
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
IndexError: list index out of range
>>> n
3
>>> lines[2]
'\n'
>>> lines[-1]
'\n'
>>>
You can access the last line as lines[-1] (see above).
Now we need to think about what you mean by "blank". The last line in a
file will usually end with '\n' but may not. That's problem 1. Problem 2
is that it may contain spaces, tabs, and/or (rarely) other forms of
whitespace. So testing against only "" is not a good idea. You can cover
all those bases by using the strip method.
Oh and you'd better test that you do have a last line. Putting it all
together:
DEBUG = True
if not lines:
print "No lines"
else:
if DEBUG:
# If you can't understand what's happening in your program,
# do some debugging!
print "Last line is", repr(lines[-1])
if lines[-1].strip():
print "Last line is NOT blank" # Note: I changed the order
else:
print "Last line is blank"
Hope this helps,
John
_______________________________________________
python-win32 mailing list
python-win32@python.org
http://mail.python.org/mailman/listinfo/python-win32
