Hi,
I've got a file which I'd like to read, modify and write.
# file contents
a
b
c
d
My script reads the file contents into a list and rotates the list and
writes it back to the same file.
Problem is that the output contains null characters. I don't know
where they are coming from.
#!/usr/bin/env python
def rotate(l):
return l[1:] + [l[0]]
f = open("/tmp/.rrd", 'r+')
lines = [ line.strip() for line in f.readlines() ]
newlist = rotate(lines)
print newlist
f.truncate(0)
f.write("\n".join(newlist))
f.close()
# output
[root@Inferno html]# python rotate.py
['b', 'c', 'd', 'a']
[root@Inferno html]# python rotate.py
['c', 'd', 'a', '\x00\x00\x00\x00\x00\x00\x00\x00b']
[root@Inferno html]#
What's going on? Thanks for your help,
Dennis
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