I tried to make a virtual environment as stated in the documentation of the visual studio code. I have already installed python 3.7.3 and anaconda on the system.
I did the following and I'm using vs code version 1.34 and windows 10:
I made an empty folder and used this line of code as stated in official documentation:
py -3 -m venv .venv
I expected a folder named .venv that has scripts folder with 'activate' file in it. As i have tested this method which worked on other systems with the same configuration, But instead i get the below error message:
Error: [Errno 2]: no such file or directory : 'C:\\ProgramData\\Anaconda3\\lib\\venv\\scripts\\nt\\python.exe'
It look like installer is broken, or so...
Copy from Python 3 installation folder:
C:\Users{user}\AppData\Local\Programs\Python\Python37
Files: python.exe, python.pdb, python_d.exe, python_d.pdb, pythonw.exe & pythonw.pdb to folder: C:\ProgramData\Anaconda3\lib\venv\scripts\nt\
That's because, in the python version you are trying create virtual environment venv [ in other cases -> vitualenv] has not been installed.
environment building process fails after python global version hand over to the specific version.
you can get idea how to install vitualenv on a specific version from the link below.
Dealing with multiple python versions and pip
Related
I'm trying (for hours now) to install the cargo crate diesel_cli for postgres. However, every time I run the recommended cargo command:
cargo install diesel_cli --no-default-features --features postgres
I wait a few minutes just to see the same build fail with this message:
note: LINK : fatal error LNK1181: cannot open input file 'libpq.lib'
error: aborting due to previous error
error: failed to compile `diesel_cli v1.4.1`, intermediate artifacts can be found at `C:\Users\<user name here>\AppData\Local\Temp\cargo-installUU2DtT`
Caused by:
could not compile `diesel_cli`.
I'm running postgres in a docker container and have the binaries on my C:\pgsql with the lib and bin directories both on the PATH so I can't figure out why it's not linking. What else could be required they didn't mention in the docs?
In my case the installation was successful but when I tried to run it this error occured.
maybe this would work for others who have the same problem:
open PowerShell
type in setx PQ_LIB_DIR "C:\Program Files\PostgreSQL\13\lib" (or any other path to your PostgreSQL lib)
restart your PC
run again
I had the same issue with WSL, if you're on Linux probably you could find PostgreSQL lib location and add it to your environment variables.
Update:
The answer below is a work around for older versions. Please check the possibility to execute cargo clean first
Original Version
Adding the folder to the PATH variable didn't help, at least in my case, as by some reason it is not used in the /LIBPATH parameter passed to link.exe.
In my case it was C:\Users\<username>\.rustup\toolchains\stable-x86_64-pc-windows-msvc\lib\rustlib\x86_64-pc-windows-msvc\lib
You can see it in the beginning of the error message.
Copy libpq.lib in there and it will be used from there.
After installation diesel would require some other assemblies. Copy libcrypto-1_1-x64.dll, libiconv-2.dll and libssl-1_1-x64.dll into the folder showed after where diesel command execution
I had the same error on Ubuntu and for me the following install fixed the issue:
sudo apt install libpq-dev
No need to move files around, just add C:\Program Files\PostgreSQL\14\lib and C:\Program Files\PostgreSQL\14\bin to your PATH. Installing and running diesel should have no problems.
Note: your paths may be different, and remember to close/reopen your terminal so the PATH variable is updated.
(Tested on Windows 10)
To give clear steps for windows:
Add C:\Users<username>.rustup\toolchains\stable-x86_64-pc-windows-msvc\lib\rustlib\x86_64-pc-windows-msvc\lib in the path in environment variables
Copy libpq.lib that is in C:\Program Files\PostgreSQL\14\lib (obviously this is with version 14) and paste it in C:\Users<username>.rustup\toolchains\stable-x86_64-pc-windows-msvc\lib\rustlib\x86_64-pc-windows-msvc\lib
If you've attempted to cargo build (or anything that runs the build scripts for libpq rust crate) when your environment was invalid, then you need to do a cargo clean after fixing your environment otherwise you'll still get the libpq.lib not found error even when it's in your PATH. The other answers where you copy the file into another directory are just hacks
You can instead add the path to .../lib to the compilers' library search paths, using RUSTFLAGS environment variable. It works both for installing diesel_cli and for building your projects.
RUSTFLAGS='-L /usr/local/pgsql/lib' cargo build
On Windows with EDB installer, the path contains a space, so use CARGO_ENCODED_RUSTFLAGS instead. For PowerShell:
$env:CARGO_ENCODED_RUSTFLAGS = "-L`u{1f}C:\Program Files\PostgreSQL\14\lib"
Below the steps followed to integrate a fake building - fake modbus device (Ubuntu 18.04 LTS) with matlab-based interface.
Following the documentation steps at: https://volttron.readthedocs.io/en/6.0/devguides/walkthroughs/DrivenMatlabAgent-Walkthrough.html
Installation steps for system running Matlab:
Install python (my Python version: 2.7.12)
Steps for system running Matlab:
Install python – done
Install pyzmq –done
Install Matlab-- done (R2019b)
run pyversion --done
version: '2.7'
executable: '/home/USER_NAME/volttron/env/bin/python'
library: 'libpython2.7.so.1.0'
home: '/home/USER_NAME/volttron/env'
isloaded: 0
when I run py.zmq.pyzmq_version() I get
ans =
Python str with no properties.
15.4.0
I copied the example.m to the desktop.
Run and test Matlab VOLTTRON Integration:
To run and test the integration: Assumptions
Device driver agent is already developed (master_driveragent-3.1.1- is installed)
Installation:
Install VOLTTRON –done
Add subtree volttron-applications under volttron/applications by using the following command –
For adding subtree: I used the code: git subtree add --prefix applications https://github.com/VOLTTRON/volttron- applications.git develop --squash error (Working tree has modifications. Cannot add.)
Configuration
Copy example configuration file applications/pnnl/DrivenMatlabAgent/config_waterheater to volttron/config. done
error while installing Drivenmatlabagent in applications/pnnl/DrivenMatlabAgent
(volttron)whygrene#ip-172-31-8-77:~/volttron$ python scripts/install-agent.py -s ./applications/pnnl/DrivenMatlabAgent/setup.py --start
ERROR:install-agent.py:Invalid agent source directory specified.
and running example.m file in matlab server ?
Am i missing something
I want to install labelImg for mac OS in python 3.7. here is the repo: https://github.com/tzutalin/labelImg
I have installed previous modules via 'pip3 install pyqt5 lxml' successfully. Cloned the repo, entered the folder 'labelImg', but only 'make qt5py3' does not work..
but when I execute 'make qt5py3', i get the error
pyrcc5 -o libs/resources.py resources.qrc
make: pyrcc5: No such file or directory
make: *** [qt5py3] Error 1
What can I do here? What might have caused the issue?
-find 'pyrcc5' under python bin, and copy 'path'
-under labelImg find 'Makefile' and edit
-change line
qt5py3: pyrcc5 to qt5py3: 'copied path'/pyrcc5
and save
-and
make qt5py3
python labelImg.py
should works.
I had the same issues as the OP, but with Python 3.6.11. In addition, I got ModuleNotFoundErrors for pyqt5 and libxml2, even though brew confirmed they were both installed. Also, I was trying to install in a virtual environment set up using pyenv.
What finally worked for me was:
1) use global env, not virtual
2) use pip (not pip3) to install pyqt5 and lxml
3) change the makefile as #zippo suggested
After I did that, I was able to get labelImg to start by running:
python labelImg.py
I have a python file running perfectly in the IDE.
I want to run it on a different PC without any IDE.
I run the program from the command line: python program.py
Error message: File "program.py", line 8, in
from mpl_finance import candlestick_ohlc
ModuleNotFoundError: No module named 'mpl_finance'
When trying: pip install mpl_finance (or pip install mpl_toolkits)
I get the message: No matching distribution found for mpl_finance (or mpl_toolkits)
There also seems to be a problem with matplotlib backend.
Looking for a solution please.
After many failed paths, here's what worked:
matplotlib.finance is deprecated and it is now mpl_finance.
Create 2 files named mpl_finance.py and setup.py and get their contents from here.
Then from the command-line: python setup.py install
Fixing the backend (this can save you a few days):
If the backend of matplotlib was set in a file original PC (and not in the code). Then you need to do the same on the second PC.
Windows Path: C:\Program Files\Python36\Lib\site-packages\matplotlib\mpl-data\matplotlibrc
Change (probably line 38) to this: backend : Qt5Agg
I'm new to ionic framework and getting error when im trying to install ionic.
I have installed apache-ant, nodejs, cordova but when i was trying to install ionic then it throws error as follows.
OS windows 8.1 64 bit.
Please guide me to install this ionic.
\node-sass\build\binding.sln" (default target) (1) ->
(_src_\libsass target) ->
..\..\src\libsass\include\sass/base.h(18): fatal error C1083: Cannot open inc
lude file: 'stdbool.h': No such file or directory [C:\Users\guru.ramachandran\A
ppData\Roaming\npm\node_modules\ionic\node_modules\node-sass\build\binding.sln]
..\..\src\libsass\include\sass/base.h(18): fatal error C1083: Cannot open inc
lude file: 'stdbool.h': No such file or directory [C:\Users\guru.ramachandran\A
ppData\Roaming\npm\node_modules\ionic\node_modules\node-sass\build\binding.sln]
c:\users\guru.ramachandran\appdata\roaming\npm\node_modules\ionic\node_module
s\node-sass\src\libsass\src\units.hpp(10): error C2668: 'acos' : ambiguous call
to overloaded function [C:\Users\guru.ramachandran\AppData\Roaming\npm\node_mo
dules\ionic\node_modules\node-sass\build\binding.sln]
c:\users\guru.ramachandran\appdata\roaming\npm\node_modules\ionic\node_module
s\node-sass\src\libsass\src\ast.hpp(12): fatal error C1083: Cannot open include
file: 'unordered_map': No such file or directory [C:\Users\guru.ramachandran\A
ppData\Roaming\npm\node_modules\ionic\node_modules\node-sass\build\binding.sln]
c:\users\guru.ramachandran\appdata\roaming\npm\node_modules\ionic\node_module
s\node-sass\src\libsass\src\ast.hpp(12): fatal error C1083: Cannot open include
file: 'unordered_map': No such file or directory [C:\Users\guru.ramachandran\A
ppData\Roaming\npm\node_modules\ionic\node_modules\node-sass\build\binding.sln]
..\..\src\libsass\include\sass/values.h(5): fatal error C1083: Cannot open in
clude file: 'stdbool.h': No such file or directory [C:\Users\guru.ramachandran\
AppData\Roaming\npm\node_modules\ionic\node_modules\node-sass\build\binding.sln
The issue is about node-gyp module, which requires VS2013-VS2015 to build components at this time, in their README file, they say
Option 1
Install all the required tools and configurations using Microsoft's
windows-build-tools using
npm install --global --production windows-build-tools
from an elevated PowerShell or CMD.exe (run as
Administrator).
Option 2
Install tools and configuration manually:
Visual C++ Build Environment:
Option 1: Install Visual C++ Build Tools using the Default Install
option.
Option 2: Install Visual Studio 2015 (or modify an existing
installation) and select Common Tools for Visual C++ during setup.
This also works with the free Community and Express for Desktop
editions.
[Windows Vista / 7 only] requires .NET Framework 4.5.1 Install
Python 2.7 (v3.x.x is not supported), and run npm config set python
python2.7 (or see below for further instructions on specifying the
proper Python version and path.)
Launch cmd, npm config set msvs_version 2015
Source: https://github.com/nodejs/node-gyp