Pardon me for my ignorance but I can't seem to get OpenOPC installed with Python 2.7 or 3.6.1. I found the github code but it does not appear to include an installer. So I attempted to install the version for 2.7 from here. I can make the OpenOPC server talk using the instructions but after copying all the files from the python 3 project into my python directory I can import OpenOPC but when I try opc = OpenOPC.client() I get a fault.
C:\>python
Python 3.6.1 |Anaconda 4.4.0 (64-bit)| (default, May 11 2017, 13:25:24) [MSC v.1900 64 bit (AMD64)] on win32
Type "help", "copyright", "credits" or "license" for more information.
>>> import OpenOPC
>>> opc = OpenOPC.client()
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
AttributeError: module 'OpenOPC' has no attribute 'client'
>>>
It works fine for me. I have installed OpenOPC through that package thanks to pip:
pip install OpenOPC-Python3x
Hope it helps.
Related
I am facing Syntax error on Mac python 3.8 from pycrypto, surprisingly its passing on the linux system,
i know the alternative was proposed to remove pycrypto and install pycryptodome but i didnt get why the above is working on linux and not on mac with the same python version ?
Python 3.8.5 (v3.8.5:580fbb018f, Jul 20 2020, 12:11:27)
[Clang 6.0 (clang-600.0.57)] on darwin
Type "help", "copyright", "credits" or "license" for more information.
>>> import Crypto.PublicKey.RSA
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "/Users/manish/pyvenv/lib/python3.8/site-packages/Crypto/PublicKey/RSA.py", line 585
except ValueError, IndexError:
^
SyntaxError: invalid syntax
On linux
python
Python 3.8.5 (default, Jul 24 2020, 17:46:42)
[GCC 7.5.0] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> import Crypto.PublicKey.RSA
>>>
Pycrypto version 2.6.1
Found the issue. Posting it here for other's reference as i had a hard time figuring out this issue. Thanks to one of my colleague for finding out the below link.
This is because of setuptools version, refer https://github.com/pycrypto/pycrypto/issues/327
after downgrading the setuptools<58.0.0 it is working fine.
Additionally make sure its not picking up the wheel from pip cache so run below steps
pip cache purge
pip uninstall wheel
pip install pycrypto
I'm trying to install the python module netcdf4. I seem to have been able to do this successfully, but then I get the "module not found error" when I try to import it in python. Having looked at some similar questions, I suspect the issue has something to do with the path, but I don't know what do about that. Here's what happens specifically:
(base) C:\Users\jwmil>conda install netcdf4
Collecting package metadata (current_repodata.json): done
Solving environment: done
# All requested packages already installed.
(base) C:\Users\jwmil>python
Python 3.7.4 (default, Aug 9 2019, 18:34:13) [MSC v.1915 64 bit (AMD64)] :: Anaconda, Inc. on win32
Type "help", "copyright", "credits" or "license" for more information.
>>> import netcdf4 as pc
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
ModuleNotFoundError: No module named 'netcdf4'
I have installed opencv using apt-get. I got opencv2 with the following version and it works fine:
rover#rover_pi:/usr/lib/arm-linux-gnueabihf $ python2.7
Python 2.7.13 (default, Nov 24 2017, 17:33:09)
[GCC 6.3.0 20170516] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> import cv2
>>> cv2.__version__
'2.4.9.1'
Then I wanted to install opencv on a conda environment using pip. I got the following version
(olfatf)rover#rover_pi:/usr/lib/arm-linux-gnueabihf $ pip list | grep opencv
opencv-python 3.4.0.14
However, I get the following error when I import the module:
(olfatf)rover#rover_pi:/usr/lib/arm-linux-gnueabihf $ python
Python 3.4.3 |Continuum Analytics, Inc.| (default, Aug 21 2015, 00:53:08)
[GCC 4.6.3] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> import cv2
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "/home/pi/.conda/envs/olfatf/lib/python3.4/site-packages/cv2/__init__.py", line 3, in <module>
from .cv2 import *
ImportError: libavformat.so.56: cannot open shared object file: No such file or directory
I checked the install libavcodec library and I get the version 57.
(olfatf)rover#rover_pi:/usr/lib/arm-linux-gnueabihf $ ls | grep libavformat
libavformat.a
libavformat.so
libavformat.so.57
libavformat.so.57.56.101
So I want to know why a later version of opencv requires an older version of libavcodec. Also, how can I installed both libavcodec56 and libavcodec57 on my machine ?
I use a raspberry pi with Raspbian Strech
Its not that opencv requires it, Its that whoever compiled the binary of opencv you are using compiled it against libavcodec56. Easiest fix is to compile it yourself.
Also, how can I installed both libavcodec56 and libavcodec57 on my machine ?
Don't. just compile and link against the same version.
After installing the TensorFlow CPU version with virtualenv (in Ubuntu 14.0), when I try to test the installation with Python (not from the source directory), I get the following error:
No module named tensorflow
Any explanation?
I am following the exact sequence of steps from the TensorFlow installation page.
Python 2.7.12 (default, Nov 19 2016, 06:48:10)
[GCC 5.4.0 20160609] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> import tensorflow as tf
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
ImportError: No module named tensorflow
>>>
Tensoflow works only with Python 3.5.x version
Tensorflow does work with python 2.7 https://www.tensorflow.org/install/pip. Just wanted to add it here so no one get it wrong. Cant comment since I don't have the reputation yet :(
Check your env and pip to make sure you have installed it for the correct python version in the env.
Having difficulties after installing Anaconda 1.9.2 Windows x86-64 on Windows 7 (64-bit).
I already had an install of Python 2.7, so I installed for All Users. I selected "Add Anaconda to my PATH environment variable", but I did not select "Register Anaconda as my default Python 2.7".
Install was successful , but upon attempting to run (as Administrator) "conda update conda" and "conda update ipython" I'm getting the following error:
Traceback (most recent call last):
File "C:\Anaconda\Scripts\conda-script.py", line 2 in
from conda.cli import main
ImportError: No module named conda.cli.
I did a system search and I can't find a single instance of conda.cli on my machine, is there some way the install would've missed this file, or is there something else I should have installed? I've seen this question involving 64-bit Linux Anaconda, but not Windows.
Please check whether you have this folder in your system: C:\Anaconda\Lib\site-packages\conda\cli'.
Also please try to check your python path and attach the logs:
(TEST) C:\anaconda3\Scripts>python
Python 3.6.2 |Continuum Analytics, Inc.| (default, Jul 20 2017, 12:30:02) [MSC v.1900 64 bit (AMD64)] on win32
Type "help", "copyright", "credits" or "license" for more information.
>>>
>>> import os
>>> print(os.sys.path)
['', 'C:\\anaconda3\\envs\\TEST\\python36.zip', 'C:\\anaconda3\\envs\\TEST\\DLLs', 'C:\\anaconda3\\envs\\TEST\\lib', 'C:\\anaconda3\\envs\\TEST', 'C:\\anaconda3\\envs\\TEST\\lib\\site-packages']