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POParmiko SFTP File - Calling .next() causes StopIteration immediately, even with lines remaining
 

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  1. POParmiko SFTP File - Calling .next() causes StopIteration immediately, even with lines remaining
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    <p>I'm attempting to use Paramiko (Python SSH library) to read a remote file, and iterate through the lines.</p> <p>My file looks something like this:</p> <pre><code># Instance Name VERSION COMMENT Bob 1.5 Bob the Builder Sam 1.7 Play it again, Sam </code></pre> <p>My Paramiko code looks something like this:</p> <pre><code>def get_instances_cfg(self): ''' Gets a file handler to the remote instances.cfg file. ''' transport = paramiko.Transport(('10.180.10.104', 22)) client = paramiko.SSHClient() #client.load_system_host_keys() client.set_missing_host_key_policy(paramiko.AutoAddPolicy()) client.connect('some_host', username='victorhooi', password='password') sftp = client.open_sftp() fileObject = sftp.file('/tmp/instances.cfg','r') return fileObject def get_root_directory(self): ''' Reads the global instances.cfg file, and returns the instance directory. ''' self.logger.info('Getting root directory') instances_cfg = self.get_instances_cfg() first_line = instances_cfg.next() # We skip the header row. instances = {} for row in instances_cfg: name, version, comment = row.split(None, 2) aeg_instances[name] = { 'version': version, 'comment': comment, } </code></pre> <p>For some reason, when I run the above, I get a <code>StopIteration</code> error when I run .next() on the SFTP file handler:</p> <pre><code>first_line = instances_cfg.next() # We skip the header row. File "/home/hooivic/python2/lib/python2.7/site-packages/paramiko/file.py", line 108, in next raise StopIteration StopIteration </code></pre> <p>This is strange, because the instances textfile I'm reading has three lines in it - I'm using .next() to skip the header line.</p> <p>When I open the file locally, using Python's open(), .next() works fine.</p> <p>Also, I can iterate through the SFTP file handler fine, and it will print all three lines.</p> <p>And using .readline() instead of .next() seems to work fine as well - not sure why the .next() isn't playing nice.</p> <p>Is this some quirk of Paramiko's SFTP file handler, or am I missing something in the code above?</p> <p>Cheers, Victor</p>
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