Uninstalling flask or any library using this command gives contains null byte error exception
Command:
pip uninstall Flask
Error:
Exception:
Traceback (most recent call last):
File "/usr/lib/python2.7/dist-packages/pip/basecommand.py", line 215, in main
status = self.run(options, args)
File "/usr/lib/python2.7/dist-packages/pip/commands/uninstall.py", line 76, in run
requirement_set.uninstall(auto_confirm=options.yes)
File "/usr/lib/python2.7/dist-packages/pip/req/req_set.py", line 346, in uninstall
req.uninstall(auto_confirm=auto_confirm)
File "/usr/lib/python2.7/dist-packages/pip/req/req_install.py", line 694, in uninstall
for path in pip.wheel.uninstallation_paths(dist):
File "/usr/lib/python2.7/dist-packages/pip/wheel.py", line 534, in unique
for item in fn(*args, **kw):
File "/usr/lib/python2.7/dist-packages/pip/wheel.py", line 554, in uninstallation_paths
for row in r:
Error: line contains NULL byte
System: Raspberry Pi
OS Raspbian
Python2.7
pip 9
I will require to run code in python2 only
How do i resolve this issue?
I am trying to turn on Pylint.
I type in 'Ctrl + Shift + P', and I click Python: Select Linter, and then I try to click 'bandit'.
When I do this, the pop up window in the bottom right corner says 'Linter bandit is not installed'.
When I click install, I get:
Collecting bandit
Using cached https://files.pythonhosted.org/packages/5a/50/ff2f2c8f1f0ca1569f678eeb608c0f973b835985410985594fbee96be820/bandit-1.6.2-py2.py3-none-any.whl
Exception:
Traceback (most recent call last):
File "C:\Users\Scott\AppData\Local\Programs\Python\Python35-32\lib\site-packages\pip\_vendor\pkg_resources\__init__.py", line 2795, in _dep_map
return self.__dep_map
File "C:\Users\Scott\AppData\Local\Programs\Python\Python35-32\lib\site-packages\pip\_vendor\pkg_resources\__init__.py", line 2652, in __getattr__
raise AttributeError(attr)
AttributeError: _DistInfoDistribution__dep_map
During handling of the above exception, another exception occurred:
Traceback (most recent call last):
File "C:\Users\Scott\AppData\Local\Programs\Python\Python35-32\lib\site-packages\pip\basecommand.py", line 211, in main
status = self.run(options, args)
File "C:\Users\Scott\AppData\Local\Programs\Python\Python35-32\lib\site-packages\pip\commands\install.py", line 294, in run
requirement_set.prepare_files(finder)
File "C:\Users\Scott\AppData\Local\Programs\Python\Python35-32\lib\site-packages\pip\req\req_set.py", line 334, in prepare_files
functools.partial(self._prepare_file, finder))
File "C:\Users\Scott\AppData\Local\Programs\Python\Python35-32\lib\site-packages\pip\req\req_set.py", line 321, in _walk_req_to_install
more_reqs = handler(req_to_install)
File "C:\Users\Scott\AppData\Local\Programs\Python\Python35-32\lib\site-packages\pip\req\req_set.py", line 561, in _prepare_file
set(req_to_install.extras) - set(dist.extras)
File "C:\Users\Scott\AppData\Local\Programs\Python\Python35-32\lib\site-packages\pip\_vendor\pkg_resources\__init__.py", line 2774, in extras
return [dep for dep in self._dep_map if dep]
File "C:\Users\Scott\AppData\Local\Programs\Python\Python35-32\lib\site-packages\pip\_vendor\pkg_resources\__init__.py", line 2797, in _dep_map
self.__dep_map = self._compute_dependencies()
File "C:\Users\Scott\AppData\Local\Programs\Python\Python35-32\lib\site-packages\pip\_vendor\pkg_resources\__init__.py", line 2830, in _compute_dependencies
common = frozenset(reqs_for_extra(None))
File "C:\Users\Scott\AppData\Local\Programs\Python\Python35-32\lib\site-packages\pip\_vendor\pkg_resources\__init__.py", line 2827, in reqs_for_extra
if req.marker_fn(override={'extra':extra}):
File "C:\Users\Scott\AppData\Local\Programs\Python\Python35-32\lib\site-packages\pip\_vendor\_markerlib\markers.py", line 113, in marker_fn
return eval(compiled_marker, environment)
File "<environment marker>", line 1, in <module>
NameError: name 'platform_system' is not defined
You are using pip version 7.1.2, however version 19.3.1 is available.
You should consider upgrading via the 'python -m pip install --upgrade pip' command.
I have already upgraded my pip version to the most recent. Basic Googling tells me that this is using a virtual environment, and the venv is using an earlier version of pip, but I have no idea how to fix this.
Please help.
I have previously used Jupyter Notebook (python 2 and 3) on my mac. After not using it for a while, there seems to be a problem I am unable to fix. When starting the notebook from terminal using the command Jupyter notebook, and then select a notebook I want to work with, I get the error:
"A connection to the notebook server could not be established. The notebook will continue trying to reconnect. Check your network connection or notebook server configuration."
I am positive this has nothing to do with my internet connection (I have tried 2 machines connected to different networks).
I have read that the browser could be the problem, therefore I have installed Chrome and Firefox. However, I get this error when I am using Safari, Chrome, and Firefox.
Then I read about it being a proxy issue. I have tried to add the server address of the notebook to the No proxy fields of the advanced network preferences of my mac, and of the advanced setting on Firefox.
The only thing I can think of is that I am entering the wrong server address?
I do not know much about setting and errors in general, hopefully someone can provide me with some alternative options to get Jupyter working again.
Terminal output:
ValueError: signal only works in main thread
ERROR:tornado.application:Exception in callback <functools.partial object at 0x111e2b208>
Traceback (most recent call last):
File "/Users/xxx/anaconda2/lib/python2.7/site-packages/tornado/ioloop.py", line 759, in _run_callback
ret = callback()
File "/Users/xxx/anaconda2/lib/python2.7/site-packages/tornado/stack_context.py", line 276, in null_wrapper
return fn(*args, **kwargs)
File "/Users/xxx/anaconda2/lib/python2.7/site-packages/zmq/eventloop/zmqstream.py", line 536, in <lambda>
self.io_loop.add_callback(lambda : self._handle_events(self.socket, 0))
File "/Users/xxx/anaconda2/lib/python2.7/site-packages/zmq/eventloop/zmqstream.py", line 450, in _handle_events
self._handle_recv()
File "/Users/xxx/anaconda2/lib/python2.7/site-packages/zmq/eventloop/zmqstream.py", line 480, in _handle_recv
self._run_callback(callback, msg)
File "/Users/xxx/anaconda2/lib/python2.7/site-packages/zmq/eventloop/zmqstream.py", line 432, in _run_callback
callback(*args, **kwargs)
File "/Users/xxx/anaconda2/lib/python2.7/site-packages/tornado/stack_context.py", line 276, in null_wrapper
return fn(*args, **kwargs)
File "/Users/xxx/anaconda2/lib/python2.7/site-packages/ipykernel/kernelbase.py", line 283, in dispatcher
return self.dispatch_shell(stream, msg)
File "/Users/xxx/anaconda2/lib/python2.7/site-packages/ipykernel/kernelbase.py", line 233, in dispatch_shell
self.pre_handler_hook()
File "/Users/xxx/anaconda2/lib/python2.7/site-packages/ipykernel/kernelbase.py", line 248, in pre_handler_hook
self.saved_sigint_handler = signal(SIGINT, default_int_handler)
ValueError: signal only works in main thread
[I 19:03:26.685 NotebookApp] KernelRestarter: restarting kernel (1/5), new random ports
Traceback (most recent call last):
File "/Users/xxx/anaconda2/lib/python2.7/runpy.py", line 174, in _run_module_as_main
"__main__", fname, loader, pkg_name)
File "/Users/xxx/anaconda2/lib/python2.7/runpy.py", line 72, in _run_code
exec code in run_globals
File "/Users/xxx/anaconda2/lib/python2.7/site-packages/ipykernel_launcher.py", line 16, in <module>
app.launch_new_instance()
File "/Users/xxx/anaconda2/lib/python2.7/site-packages/traitlets/config/application.py", line 658, in launch_instance
app.start()
File "/Users/xxx/anaconda2/lib/python2.7/site-packages/ipykernel/kernelapp.py", line 477, in start
ioloop.IOLoop.instance().start()
File "/Users/xxx/anaconda2/lib/python2.7/site-packages/tornado/ioloop.py", line 928, in start
raise RuntimeError("IOLoop is already running")
RuntimeError: IOLoop is already running
[I 19:03:29.696 NotebookApp] KernelRestarter: restarting kernel (2/5), new random ports
Traceback (most recent call last):
File "/Users/xxx/anaconda2/lib/python2.7/runpy.py", line 174, in _run_module_as_main
"__main__", fname, loader, pkg_name)
File "/Users/xxx/anaconda2/lib/python2.7/runpy.py", line 72, in _run_code
exec code in run_globals
File "/Users/xxx/anaconda2/lib/python2.7/site-packages/ipykernel_launcher.py", line 16, in <module>
app.launch_new_instance()
File "/Users/xxx/anaconda2/lib/python2.7/site-packages/traitlets/config/application.py", line 658, in launch_instance
app.start()
File "/Users/xxx/anaconda2/lib/python2.7/site-packages/ipykernel/kernelapp.py", line 477, in start
ioloop.IOLoop.instance().start()
File "/Users/xxx/anaconda2/lib/python2.7/site-packages/tornado/ioloop.py", line 928, in start
raise RuntimeError("IOLoop is already running")
RuntimeError: IOLoop is already running
[I 19:03:32.712 NotebookApp] KernelRestarter: restarting kernel (3/5), new random ports
Traceback (most recent call last):
File "/Users/xxx/anaconda2/lib/python2.7/runpy.py", line 174, in _run_module_as_main
"__main__", fname, loader, pkg_name)
File "/Users/xxx/anaconda2/lib/python2.7/runpy.py", line 72, in _run_code
exec code in run_globals
File "/Users/xxx/anaconda2/lib/python2.7/site-packages/ipykernel_launcher.py", line 16, in <module>
app.launch_new_instance()
File "/Users/xxx/anaconda2/lib/python2.7/site-packages/traitlets/config/application.py", line 658, in launch_instance
app.start()
File "/Users/xxx/anaconda2/lib/python2.7/site-packages/ipykernel/kernelapp.py", line 477, in start
ioloop.IOLoop.instance().start()
File "/Users/xxx/anaconda2/lib/python2.7/site-packages/tornado/ioloop.py", line 928, in start
raise RuntimeError("IOLoop is already running")
RuntimeError: IOLoop is already running
[W 19:03:33.717 NotebookApp] Timeout waiting for kernel_info reply from 2cf24420-719b-4666-ad9f-fcdf8db505f3
[E 19:03:33.721 NotebookApp] Uncaught exception in /api/kernels/2cf24420-719b-4666-ad9f-fcdf8db505f3/channels
Traceback (most recent call last):
File "/Users/xxx/anaconda2/lib/python2.7/site-packages/tornado/websocket.py", line 498, in _run_callback
result = callback(*args, **kwargs)
File "/Users/xxx/anaconda2/lib/python2.7/site-packages/notebook/services/kernels/handlers.py", line 262, in open
super(ZMQChannelsHandler, self).open()
File "/Users/xxx/anaconda2/lib/python2.7/site-packages/notebook/base/zmqhandlers.py", line 176, in open
self.send_ping, self.ping_interval, io_loop=loop,
TypeError: __init__() got an unexpected keyword argument 'io_loop'
[E 19:03:34.749 NotebookApp] Uncaught exception in /api/kernels/2cf24420-719b-4666-ad9f-fcdf8db505f3/channels
Traceback (most recent call last):
File "/Users/xxx/anaconda2/lib/python2.7/site-packages/tornado/websocket.py", line 498, in _run_callback
result = callback(*args, **kwargs)
File "/Users/xxx/anaconda2/lib/python2.7/site-packages/notebook/services/kernels/handlers.py", line 262, in open
super(ZMQChannelsHandler, self).open()
File "/Users/xxx/anaconda2/lib/python2.7/site-packages/notebook/base/zmqhandlers.py", line 176, in open
self.send_ping, self.ping_interval, io_loop=loop,
TypeError: __init__() got an unexpected keyword argument 'io_loop'
[I 19:03:35.724 NotebookApp] KernelRestarter: restarting kernel (4/5), new random ports
[E 19:03:35.771 NotebookApp] Uncaught exception in /api/kernels/2cf24420-719b-4666-ad9f-fcdf8db505f3/channels
Traceback (most recent call last):
File "/Users/xxx/anaconda2/lib/python2.7/site-packages/tornado/websocket.py", line 498, in _run_callback
result = callback(*args, **kwargs)
File "/Users/xxx/anaconda2/lib/python2.7/site-packages/notebook/services/kernels/handlers.py", line 262, in open
super(ZMQChannelsHandler, self).open()
File "/Users/xxx/anaconda2/lib/python2.7/site-packages/notebook/base/zmqhandlers.py", line 176, in open
self.send_ping, self.ping_interval, io_loop=loop,
TypeError: __init__() got an unexpected keyword argument 'io_loop'
Traceback (most recent call last):
File "/Users/xxx/anaconda2/lib/python2.7/runpy.py", line 174, in _run_module_as_main
"__main__", fname, loader, pkg_name)
File "/Users/xxx/anaconda2/lib/python2.7/runpy.py", line 72, in _run_code
exec code in run_globals
File "/Users/xxx/anaconda2/lib/python2.7/site-packages/ipykernel_launcher.py", line 16, in <module>
app.launch_new_instance()
File "/Users/xxx/anaconda2/lib/python2.7/site-packages/traitlets/config/application.py", line 658, in launch_instance
app.start()
File "/Users/xxx/anaconda2/lib/python2.7/site-packages/ipykernel/kernelapp.py", line 477, in start
ioloop.IOLoop.instance().start()
File "/Users/xxx/anaconda2/lib/python2.7/site-packages/tornado/ioloop.py", line 928, in start
raise RuntimeError("IOLoop is already running")
RuntimeError: IOLoop is already running
[E 19:03:36.791 NotebookApp] Uncaught exception in /api/kernels/2cf24420-719b-4666-ad9f-fcdf8db505f3/channels
Traceback (most recent call last):
File "/Users/xxx/anaconda2/lib/python2.7/site-packages/tornado/websocket.py", line 498, in _run_callback
result = callback(*args, **kwargs)
File "/Users/xxx/anaconda2/lib/python2.7/site-packages/notebook/services/kernels/handlers.py", line 262, in open
super(ZMQChannelsHandler, self).open()
File "/Users/xxx/anaconda2/lib/python2.7/site-packages/notebook/base/zmqhandlers.py", line 176, in open
self.send_ping, self.ping_interval, io_loop=loop,
TypeError: __init__() got an unexpected keyword argument 'io_loop'
[E 19:03:37.810 NotebookApp] Uncaught exception in /api/kernels/2cf24420-719b-4666-ad9f-fcdf8db505f3/channels
Traceback (most recent call last):
File "/Users/xxx/anaconda2/lib/python2.7/site-packages/tornado/websocket.py", line 498, in _run_callback
result = callback(*args, **kwargs)
File "/Users/xxx/anaconda2/lib/python2.7/site-packages/notebook/services/kernels/handlers.py", line 262, in open
super(ZMQChannelsHandler, self).open()
File "/Users/xxx/anaconda2/lib/python2.7/site-packages/notebook/base/zmqhandlers.py", line 176, in open
self.send_ping, self.ping_interval, io_loop=loop,
TypeError: __init__() got an unexpected keyword argument 'io_loop'
[W 19:03:38.733 NotebookApp] KernelRestarter: restart failed
[W 19:03:38.733 NotebookApp] Kernel 2cf24420-719b-4666-ad9f-fcdf8db505f3 died, removing from map.
[W 19:03:38.830 NotebookApp] 404 GET /api/kernels/2cf24420-719b-4666-ad9f-fcdf8db505f3/channels?session_id=3F75F379F865488D8379D3BB7FC0BF0F (::1): Kernel does not exist: 2cf24420-719b-4666-ad9f-fcdf8db505f3
[W 19:03:38.838 NotebookApp] 404 GET /api/kernels/2cf24420-719b-4666-ad9f-fcdf8db505f3/channels?session_id=3F75F379F865488D8379D3BB7FC0BF0F (::1) 12.00ms referer=None
[W 19:03:40.859 NotebookApp] Replacing stale connection: 2cf24420-719b-4666-ad9f-fcdf8db505f3:3F75F379F865488D8379D3BB7FC0BF0F
Running the following version of jupyter and tornado seemed to solve the issue:
Jupyter: 4.4.0
Tornado: 4.5.3
I needed to downgrade my version of tornado (which was 5.0.2)
I faced this problem too. My problem was because of a custom module name. I named the module 'copy.py.' My issue was solved when I renamed it.
I found a way out, Installing Python on my PC solved it. I didn't install python before installing anaconda
I was also facing the kernal related issues and all my problems were solved by installing jupyter notebook from anaconda navigator.
So,The best way to handle jupyter notebook related problems is to install jupyter notebook from anaconda navigator for your environment in which you want to run jupyter notebook. If you will install jupyter notebook from anaconda navigator then you will not face any problem.
After know that jwt package is incompatible with python2, I am trying to install it with pip3:
sudo pip3 install jwt
I am getting the following output:
Exception:
Traceback (most recent call last):
File "/usr/lib/python3/dist-packages/pkg_resources.py", line 2482, in
_dep_map
return self.dep_map
File "/usr/lib/python3/dist-packages/pkg_resources.py", line 2344, in
__getattr
raise AttributeError(attr) AttributeError: _DistInfoDistribution__dep_map
During handling of the above exception, another exception occurred:
Traceback (most recent call last):
File "/usr/lib/python3/dist-packages/pip/basecommand.py", line 122, in main
status = self.run(options, args)
File "/usr/lib/python3/dist-packages/pip/commands/install.py", line 278, in run
requirement_set.prepare_files(finder, force_root_egg_info=self.bundle, bundle=self.bundle)
File
"/usr/lib/python3/dist-packages/pip/req.py", line 1266, in
prepare_files
req_to_install.extras):
File "/usr/lib/python3/dist-packages/pkg_resources.py", line 2291, in
requires
dm = self._dep_map File "/usr/lib/python3/dist-packages/pkg_resources.py", line 2484, in
_dep_map
self.__dep_map = self._compute_dependencies()
File "/usr/lib/python3/dist-packages/pkg_resources.py", line 2508, in
_compute_dependencies
parsed = next(parse_requirements(distvers))
File "/usr/lib/python3/dist-packages/pkg_resources.py", line 2605, in
parse_requirements
line, p, specs = scan_list(VERSION,LINE_END,line,p,(1,2),"version spec")
File "/usr/lib/python3/dist-packages/pkg_resources.py", line
2583, in scan_list
"Expected ',' or end-of-list in",line,"at",line[p:] ValueError: ("Expected ',' or end-of-list in", 'cryptography <2.,>=1.7.2', 'at',
',>=1.7.2')
Any help?
Solved problem. I had to upgrade pip3:
pip3 install --upgrade
After this, I am able to install jwt with the following:
pip3 install jwt
There seems to be a connection time out when trying to install p4python on a ubuntu system. I am trying install this using pip on an ubuntu install on a vm.
Here is the stack trace:
~$ pip install p4python
Downloading/unpacking p4python
Downloading p4python-2016.1.1415051.tar.gz (83kB): 83kB downloaded
Running setup.py (path:/tmp/pip-build-rsprca/p4python/setup.py) egg_info for package p4python
Attempting to load API from ftp.perforce.com
Traceback (most recent call last):
File "<string>", line 17, in <module>
File "/tmp/pip-build-rsprca/p4python/setup.py", line 611, in <module>
p4_api_dir = get_api_dir()
File "/tmp/pip-build-rsprca/p4python/setup.py", line 532, in get_api_dir
p4ftp = P4APIFtp()
File "/tmp/pip-build-rsprca/p4python/setup.py", line 60, in __init__
self.ftp = FTP(PERFORCE_FTP)
File "/usr/lib/python2.7/ftplib.py", line 120, in __init__
self.connect(host)
File "/usr/lib/python2.7/ftplib.py", line 135, in connect
self.sock = socket.create_connection((self.host, self.port), self.timeout)
File "/usr/lib/python2.7/socket.py", line 575, in create_connection
raise err
socket.error: [Errno 110] Connection timed out
Complete output from command python setup.py egg_info:
Attempting to load API from ftp.perforce.com
Traceback (most recent call last):
File "<string>", line 17, in <module>
File "/tmp/pip-build-rsprca/p4python/setup.py", line 611, in <module>
p4_api_dir = get_api_dir()
File "/tmp/pip-build-rsprca/p4python/setup.py", line 532, in get_api_dir
p4ftp = P4APIFtp()
File "/tmp/pip-build-rsprca/p4python/setup.py", line 60, in __init__
self.ftp = FTP(PERFORCE_FTP)
File "/usr/lib/python2.7/ftplib.py", line 120, in __init__
self.connect(host)
File "/usr/lib/python2.7/ftplib.py", line 135, in connect
self.sock = socket.create_connection((self.host, self.port), self.timeout)
File "/usr/lib/python2.7/socket.py", line 575, in create_connection
raise err
socket.error: [Errno 110] Connection timed out
----------------------------------------
Cleaning up...
Command python setup.py egg_info failed with error code 1 in /tmp/pip-build- rsprca/p4python
Storing debug log for failure in /home/cicd/.pip/pip.log
Help with debugging this issue is appreciated.
Probably you have some firewall limitations (or using proxy).
Please use following command instead:
pip install p4python config --global http.sslVerify false --trusted-host pypi.org