Pure python scp module
======================
The scp.py module uses a paramiko transport to send and receive files via the
scp1 protocol. This is the protocol as referenced from the openssh scp program,
and has only been tested with this implementation.
Example
-------
.. code-block:: python
from paramiko import SSHClient
from scp import SCPClient
ssh = SSHClient()
ssh.load_system_host_keys()
ssh.connect('example.com')
# SCPCLient takes a paramiko transport as an argument
scp = SCPClient(ssh.get_transport())
scp.put('test.txt', 'test2.txt')
scp.get('test2.txt')
# Uploading the 'test' directory with its content in the
# '/home/user/dump' remote directory
scp.put('test', recursive=True, remote_path='/home/user/dump')
scp.close()
.. code-block::
$ md5sum test.txt test2.txt
fc264c65fb17b7db5237cf7ce1780769 test.txt
fc264c65fb17b7db5237cf7ce1780769 test2.txt
Using 'with' keyword
--------------------
.. code-block:: python
from paramiko import SSHClient
from scp import SCPClient
with SSHClient() as ssh:
ssh.load_system_host_keys()
ssh.connect('example.com')
with SCPClient(ssh.get_transport()) as scp:
scp.put('test.txt', 'test2.txt')
scp.get('test2.txt')
.. code-block::
$ md5sum test.txt test2.txt
fc264c65fb17b7db5237cf7ce1780769 test.txt
fc264c65fb17b7db5237cf7ce1780769 test2.txt
Uploading file-like objects
---------------------------
The ``putfo`` method can be used to upload file-like objects:
.. code-block:: python
import io
from paramiko import SSHClient
from scp import SCPClient
ssh = SSHClient()
ssh.load_system_host_keys()
ssh.connect('example.com')
# SCPCLient takes a paramiko transport as an argument
scp = SCPClient(ssh.get_transport())
# generate in-memory file-like object
fl = io.BytesIO()
fl.write(b'test')
fl.seek(0)
# upload it directly from memory
scp.putfo(fl, '/tmp/test.txt')
# close connection
scp.close()
# close file handler
fl.close()
Tracking progress of your file uploads/downloads
------------------------------------------------
A ``progress`` function can be given as a callback to the SCPClient to handle
how the current SCP operation handles the progress of the transfers. In the
example below we print the percentage complete of the file transfer.
.. code-block:: python
from paramiko import SSHClient
from scp import SCPClient
import sys
ssh = SSHClient()
ssh.load_system_host_keys()
ssh.connect('example.com')
# Define progress callback that prints the current percentage completed for the file
def progress(filename, size, sent):
sys.stdout.write("%s's progress: %.2f%% \r" % (filename, float(sent)/float(size)*100) )
# SCPCLient takes a paramiko transport and progress callback as its arguments.
scp = SCPClient(ssh.get_transport(), progress=progress)
# you can also use progress4, which adds a 4th parameter to track IP and port
# useful with multiple threads to track source
def progress4(filename, size, sent, peername):
sys.stdout.write("(%s:%s) %s's progress: %.2f%% \r" % (peername[0], peername[1], filename, float(sent)/float(size)*100) )
scp = SCPClient(ssh.get_transport(), progress4=progress4)
scp.put('test.txt', '~/test.txt')
# Should now be printing the current progress of your put function.
scp.close()
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