On 02/03/2012 03:27 PM, Anatoli Hristov wrote:
Hi everyone,
I`m totaly new in python and trying to figure out - how to write a list to
a file with a newline at the end of each object.
I tried alot of combinations :) like:
users = ['toli','didi']
fob=open('c:/Python27/Toli/username','w')
fob.writelines(users) + '%s\N'
fob.close()
or fob.writelines('\N' % users)
or fob.writelines('%s\N' % users)
but nothing of dose works...
Could you help me find out the right syntaxes?
Thanks
mylist.writelines() is a shorthand for a loop of writes, once per list
item. It does not append a newline, since if the list had come from
readlines(), it would already have the linefeed on each line.
So you have a few choices. You could add a newline to each list item
before issuing the writelines(), or write your own loop. I vote for
writing your own loop, since there may be other things you want to
change on each line.
1)
users = [item+"\n" for item in users] # add a newline to each item
2)
for line in users:
fob.write(line + "\n")
fob.close()
There are other possibilities, such as
contents = "\n".join(mylist) #make a single string out of it
fob.write(contents + "\n") #note we had to add one at the
very end,
#because join just puts the separator between items, not
after them.
--
DaveA
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