Lambda missing 1 required positional argument: 'lst'

[KaappoRaivio]

Hello,

(this issue is very similar to #20 but I decided to make a new one because it was quite old.)

I cannot connect to my Nikon d7200 via IP using the library. Here's my code:

from ptpy import PTPy
from ptpy.transports.ip import IPTransport

c = PTPy(transport=IPTransport, device='192.168.1.1')

The ip address is correct, since another (but less sophisticated) library is able to connect with the same address. The error I get is:

E 65729 ptpy.transports.ip[MainThread:__implicit_session:115] <lambda>() missing 1 required positional argument: 'lst'
E 65729 ptpy.ptp[MainThread:recv:801] Failed to open PTP/IP implicit session
Traceback (most recent call last):
  File "/home/kaappo/.local/lib/python3.7/site-packages/ptpy/transports/ip.py", line 111, in __implicit_session
    self.__open_implicit_session()
  File "/home/kaappo/.local/lib/python3.7/site-packages/ptpy/transports/ip.py", line 136, in __open_implicit_session
    self.__setup_connection(self.__device)
  File "/home/kaappo/.local/lib/python3.7/site-packages/ptpy/transports/ip.py", line 208, in __setup_connection
    Minor=000,
  File "/home/kaappo/.local/lib/python3.7/site-packages/construct/core.py", line 203, in build
    self.build_stream(obj, stream, context, **kw)
  File "/home/kaappo/.local/lib/python3.7/site-packages/construct/core.py", line 215, in build_stream
    self._build(obj, stream, context, "building")
  File "/home/kaappo/.local/lib/python3.7/site-packages/construct/core.py", line 299, in _build
    return self.subcon._build(obj, stream, context, path)
  File "/home/kaappo/.local/lib/python3.7/site-packages/construct/core.py", line 874, in _build
    buildret = sc._build(subobj, stream, context, path)
  File "/home/kaappo/.local/lib/python3.7/site-packages/construct/core.py", line 2704, in _build
    return self.subcon._build(obj, stream, context, path)
  File "/home/kaappo/.local/lib/python3.7/site-packages/construct/core.py", line 315, in _build
    return self.subcon._build(self._encode(obj, context), stream, context, path)
  File "/home/kaappo/.local/lib/python3.7/site-packages/construct/core.py", line 1133, in _build
    if self.predicate(subobj, context):
TypeError: <lambda>() missing 1 required positional argument: 'lst'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/home/kaappo/.local/lib/python3.7/site-packages/ptpy/__init__.py", line 114, in __new__
    device_info = plain_camera.get_device_info()
  File "/home/kaappo/.local/lib/python3.7/site-packages/ptpy/ptp.py", line 953, in get_device_info
    response = self.recv(ptp)
  File "/home/kaappo/.local/lib/python3.7/site-packages/ptpy/ptp.py", line 802, in recv
    raise e
  File "/home/kaappo/.local/lib/python3.7/site-packages/ptpy/ptp.py", line 799, in recv
    return super(PTP, self).recv(ptp_container)
  File "/home/kaappo/.local/lib/python3.7/site-packages/ptpy/transports/ip.py", line 600, in recv
    with self.__implicit_session():
  File "/usr/lib/python3.7/contextlib.py", line 112, in __enter__
    return next(self.gen)
  File "/home/kaappo/.local/lib/python3.7/site-packages/ptpy/transports/ip.py", line 116, in __implicit_session
    raise PTPError('Failed to open PTP/IP implicit session')
ptpy.ptp.PTPError: Failed to open PTP/IP implicit session

[wmeeusse]

I'm having a very similar problem with the Parrot Sequoia, running on the latest master. I verified the camera and network connection using the HTTP control API, which works fine. But the PTP API does not work:

Here's my code:

#!/usr/bin/env python 
from ptpy import PTPy
from ptpy.transports.ip import IPTransport

# Default PTP/IP port assumed
c = PTPy(transport=IPTransport, device='192.168.47.1')

And there's the output I'm getting:

E 14 ptpy.transports.ip[MainThread:__implicit_session:115] <lambda>() takes exactly 3 arguments (2 given)
E 14 ptpy.ptp[MainThread:recv:809] Failed to open PTP/IP implicit session
Traceback (most recent call last):
  File "./test.py", line 6, in <module>
    c = PTPy(transport=IPTransport, device='192.168.47.1')
  File "build/bdist.linux-x86_64/egg/ptpy/__init__.py", line 116, in __new__
  File "build/bdist.linux-x86_64/egg/ptpy/ptp.py", line 969, in get_device_info
  File "build/bdist.linux-x86_64/egg/ptpy/ptp.py", line 810, in recv
ptpy.ptp.PTPError: Failed to open PTP/IP implicit session

[Sly-Guo]

Have u guys fixed this? Could u share some ideas?

[KaappoRaivio]

Well, this repo seems to be dead.

[kebwi]

I'm having the same problem attempting to connect to a Panasonic BGH1 from a Mac running 10.14.5. Sigh. Doesn't look like anyone has made any progress on this issue in a very long time.

[fabianfreyer]

I ran into this too, it seems fixable by upgrading construct to a later version on the 2.8 branch, I used 2.8.22.