qtpy | uniform layer to support PyQt5 | Animation library
kandi X-RAY | qtpy Summary
kandi X-RAY | qtpy Summary
QtPy is a small abstraction layer that lets you write applications using a single API call to either PyQt or PySide. It provides support for PyQt5, PyQt6, PySide6, PySide2 using the Qt5 layout (where the QtGui module has been split into QtGui and QtWidgets). Basically, you can write your code as if you were using PySide2 but import Qt modules from qtpy instead of PySide2 (or PyQt5).
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Top functions reviewed by kandi - BETA
- Generate argument parser
- Wrapper for QFileDialog
- Convert obj to text string
- Return True if obj is a text string
- Get QFiledDialog for the QFiledog dialog
- Wrapper for QFileDialog
- Decorator for getOpenFileNames
- Get the name of the QFiled dialog
- Main function
- Generates an argument parser
- Warn warning about old version
- Print yaml arguments
- Generate mypy
qtpy Key Features
qtpy Examples and Code Snippets
def tarjan(g):
"""
Tarjan's algo for finding strongly connected components in a directed graph
Uses two main attributes of each node to track reachability, the index of that node
within a component(index), and the lowest index reacha
python
>>> import sysconfig
>>> sysconfig.get_path('stdlib')
'/usr/local/lib/python3.9'
ls -ld /usr/local/lib/python3.9/encodings
drwxr-xr-x 3 root wheel 5632 Dec 11 14:34 /usr/local/lib/python
python is /opt/anaconda3/bin/python
python is /usr/local/bin/python
python is /usr/bin/python
# Save out figure if desired, then close
# Assuming not using a blocking draw/show call.
fig.savefig('myfig.png')
plt.close() # Object oriented: fig.close()
conda create -c free -n anaconda42 anaconda=4.2.0
The following packages will be downloaded:
package | build
---------------------------|-----------------
_license-1.1
results = []
for row in range(listwidget.count()):
item = listwidget.item(row)
if not item.isHidden():
text = item.text()
results.append(text)
print(results)
if self.l2_norm:
masked_embedding = F.normalize(masked_embedding, p=2.0, dim=1, eps=1e-10)
if self.l2_norm:
norm = masked_embedding.norm(p=2, dim=1, keepdim=True) + 1e-10
masked_embedding /= norm
np.random.choice(list(candidate_sets))
[...]
candidate_sets = self.category2ims[item_type].keys()
attempts = 0
while item_out == item_id and attempts < 100:
choice = np.random.choice(candidate_sets)
[...]
import multiprocessing as mp
import threading
from qtpy import QtWidgets
from qt_thread_updater import get_updater
app = QtWidgets.QApplication()
fig = Plot() # Your plotting library
fig.show()
def plot_data(data):
# Plot the data
Community Discussions
Trending Discussions on qtpy
QUESTION
A whole host of actions keep returning to this problem:
pip install encodings
Fatal Python error: Py_Initialize: Unable to get the locale encoding
ModuleNotFoundError: No module named 'encodings'
python3
Fatal Python error: Py_Initialize: Unable to get the locale encoding
ModuleNotFoundError: No module named 'encodings'
libreoffice --safe-mode
Fatal Python error: Py_Initialize: Unable to get the locale encoding
ModuleNotFoundError: No module named 'encodings'
zypper se python |grep '^i '
ANSWER
Answered 2022-Mar-30 at 06:20Looking at the strace
output for both root
and greg
, the problem seems clear.
For the root
user, python 3.6 finds the libraries in /usr/lib64/python3.6
.
However, for greg
, it only looks under /usr/bin/python3
for subdirectories. That doesn't work because /usr/bin/python3
is a file.
I suspect that the user greg
has PYTOHNHOME
set erroneously to the location of the Python binary , and that is causing the issue.
Remove PYTOHNHOME
from your environment, log out and log in again.
Note: the stuff below is probably barking up the wrong tree. I'll leave it for information.
The encodings
module is an (undocumented) part of the python standard library. It is used by the locale
module.
Based on the output I suspect that your Python installation has been damaged or corrupted. Try re-installing python.
EDIT:
If a forced re-install doesn't fix the problem, check that the directory encodings
exist in your Python stdlib directory, and is accessible for all users.
To find out which directory that is:
QUESTION
I am trying to build an app from a python file (Mac OS) using the py2app extension. I have a folder with the python file and the "setup.py" file.
- I first tested the app by running
python setup.py py2app -A
in the terminal and the dist and build folder are successfully created and the app works when launched. - Now when I try to build it non-locally by running the command
python setup.py py2app
in the terminal, there are various "WARNING: ImportERROR" messages while building and finally aerror: [Errno 2] No such file or directory: '/opt/anaconda3/lib/python3.8/site-packages/rtree/lib'
error.
How can I fix this? I've tried to delete anaconda fully as I don't use it but it seems to still want to run through it. Additionally, I have tried to run the build command using a virtual environment but I end up having even more import errors.
*I Left out a lot of the "skipping" and "warning" lines using "..." for space
ANSWER
Answered 2022-Mar-13 at 16:13The error error: [Errno 2] No such file or directory: '/opt/anaconda3/lib/python3.8/site-packages/rtree/lib'
was caused by py2app trying to build the program bundle using a non-existent interpreter. This means that even if you try to uninstall a manager like Anaconda, it still has option logs somewhere on your mac.
The fix:
- Open the terminal and type the command
type -a python
.
- You will see similar lines
QUESTION
Trying to (re)install Jupyter's nbextension via the following steps in terminal
- pip install jupyter_contrib_nbextensions
- jupyter contrib nbextension install --user
- install --user jupyter nbextension enable varInspector/main
Step 1 = runs and i am able to launch notebooks via "jupyter notebook" in terminal just fine.
Step 2 = fails with
...ANSWER
Answered 2022-Mar-01 at 17:47So in case anyone comes across similar for any reason with me encountering this probably due getting a new machine and IT doing their voodoo magic transferring my old stuff to this new machine.
Anyhow, there were a bunch of things I still needed to install after I got my new machine and i am not able to exactly pin point what caused issues from my question but in the end I was able to resolve. Follow me there below ...
Checking out my python.exe files I found 2 paths. First one added as environment variable
- C:\Users-----\AppData\Local\Programs\Python\Python310
- C:\Users----\AppData\Roaming\Python\Python310\
Second one not added. Adding roaming version to path variables did not solve the issue and gave additional errors instead:
Fatal error in launcher: Unable to create process using '"C:\Program Files\Python310\python.exe"
So
I uninstalled python (done that before didnt help doing just that alone)
Deleted all environment variables pointing to python (here is what environment variables are just in case - https://www.computerhope.com/issues/ch000549.htm)
Uninstalled python extension from VS code (https://marketplace.visualstudio.com/items?itemName=ms-python.python)
Deleted Python folders mentioned in the two paths above
Then reinstalled python (clicked add to path during installation)
Reinstalled VS code python extension
Everything works now.
Best of luck
QUESTION
I am trying to deploy my first web app on Heroku however I am getting a PyObjc error while pushing the code. I am doing this on a Mac Machine. This predictive application is developed using Flask. I do not know why this error is occurring as I do not have the PyObjc in my requirements.txt
...ANSWER
Answered 2022-Feb-04 at 21:42applaunchservices
appears to be Apple-only:
Simple package for registering an app with apple Launch Services to handle UTI and URL. See Apple documentations for details.
I suspect you don't need that, either. Did you create your requirements.txt
from a pip freeze
? There's likely a bunch of stuff in there you don't need.
I suggest you review that file and remove anything you aren't directly depending on. pip
will find transitive dependencies (dependencies your dependencies depend on) and install them automatically.
Prune that file, commit, and redeploy.
QUESTION
I am using pyvistaqt
and want display a progress bar window when I load data. I have success without using pyvista
with PyQt
(see this SO post), however it isn't working when I add vtk
.
I think something is still blocking the main thread, but I don't know what. Either the progress bar won't show at all, or if it does, half way through the bar stops loading and stops responding. Any help would be much appreciated:
Setup:
...ANSWER
Answered 2021-Dec-17 at 00:12"(Not Responding)" in Windows is usually the consequence of a deadlock. Historically, a lot of confusion has surfaced over whether to override run()
or to use moveToThread()
when dealing with QThread
:
- You're doing it wrong...
- You were not doing so wrong
- QThread documentation: do not discourage the reimplementation of QThread
Though both methods are accepted, I chose to use moveToThread()
because I learned it was best used when you have threads that need to interact with one another through signals and slots (see QThreads: Are You Using Them Wrong?)
After careful consideration, I removed the lambda
from self.thread.started.connect
and replaced it with
QUESTION
Good day
I am getting an error while importing my environment:
...ANSWER
Answered 2021-Dec-03 at 09:22Build tags in you environment.yml are quite strict requirements to satisfy and most often not needed. In your case, changing the yml file to
QUESTION
I am working with pycharm community on a tensorflow model with keras backend, sometimes this error appears in a random time, specially after I call pyplot and close the window:
...ANSWER
Answered 2021-Nov-30 at 20:26Looks like this is part of an actively tracked issue with Tkinter in PyCharm. You can find the reference on the Pycharm's developer's issue tracker. The issue is undiagnosed, but if looking at similar problems with Tk on StackOverflow, one can see that it's an issue with thread safety and/or multithreading.
All I can do is speculate as to the cause, which is not helpful, however, I can at least collate the suggested workarounds:
Switch to a different Matplotlib backend (See docs: What is a backend?). Such as Qt5, but you will need to make sure they are available in your environment.
This approach is the most promising as other backends are better able to deal with not being the main thread or are explicitly safe for multi-threading. It's also the simplest unless you have a really specific reason for preferring TkAgg.
Do not use the debugger with interactive plots.
Set "Variables Loading Policy" to "Synchronously" in Debugger as suggested by a PyCharm dev in the linked issue.
Enable "Scientific mode" in Pycharm.
More esoteric workarounds such as closing your figures within the code before drawing the second one. Example, after plotting the first figure:
QUESTION
import matplotlib.pyplot as plt
plt.plot([1,2,3])
plt.show()
input("Press enter to continue...")
...ANSWER
Answered 2021-Nov-03 at 13:32As of late, conda and matplotlib
have been having issues.
You can try to downgrade freetype from 2.11.0 to 2.10.4 by doing conda install freetype=2.10.4
QUESTION
I want to install specific packages in a docker container. For most of them, the pip installation works fine. However, it seems like some of the versions of the packages cannot be found.
Here's the requirements.txt file from which I'm installing the packages. It was obtained from pip freeze done in PyCharm from Windows.
Currently, I am trying to install them in Docker working on Ubuntu 20.04.
...ANSWER
Answered 2021-Oct-12 at 09:25Try to use some other version of ipython.
Replace the python version in your requirements.txt with:
ipython==7.24.1
However, it doesn't have anything to do with docker configuration i.e. --network=host
QUESTION
data source: https://catalog.data.gov/dataset/nyc-transit-subway-entrance-and-exit-data
I tried looking for a similar problem but I can't find an answer and the error does not help much. I'm kinda frustrated at this point. Thanks for the help. I'm calculating the closest distance from a point.
...ANSWER
Answered 2021-Oct-11 at 14:21geopandas 0.10.1
- have noted that your data is on kaggle, so start by sourcing it
- there really is only one issue
shapely.geometry.MultiPoint()
constructor does not work with a filtered series. Pass it a numpy array instead and it works. - full code below, have randomly selected a point to serve as
gpdPoint
Community Discussions, Code Snippets contain sources that include Stack Exchange Network
Vulnerabilities
No vulnerabilities reported
Install qtpy
You can use qtpy like any standard Python library. You will need to make sure that you have a development environment consisting of a Python distribution including header files, a compiler, pip, and git installed. Make sure that your pip, setuptools, and wheel are up to date. When using pip it is generally recommended to install packages in a virtual environment to avoid changes to the system.
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