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Couldn't open Jupyter, Spyder, Anaconda Navigator on Win10 (64 bit) #12082

Open yu-cheng-kuo-28 opened 4 years ago

yu-cheng-kuo-28 commented 4 years ago

Couldn't open Jupyter, Spyder, Anaconda Navigator on Win10(64 bit) after installed Anaconda 2020.07

How I tried to solve this issue, yet Spyder still doesn't work.

(1) Issue

Today (2020/10/06) I opened my NB and found that I couldn't open Jupyter, Spyder, Anaconda anymore on my Win10 (64 bit) NB. So weird. So I uninstalled it and install the latest version 2020.07.

(2) Errors in this article

  1. After installed Anaconda, I couldn't open Spyder, Jupyter, and Anaconda Navigator
  2. Entering some lines in Anaconda Prompt, and I saw "could not find or load the Qt platform plugin windows."
  3. Warnings occured when insalling PyQt5(pyqt5): ERROR: spyder 4.1.4 requires pyqtwebengine<5.13; python_version >= "3", which is not installed. ERROR: spyder 4.1.4 has requirement pyqt5<5.13; python_version >= "3", but you'll have pyqt5 5.15.1 which is incompatible.

(3) Solution

Open the Anaconda Prompt as a system administrator, then enter the following lines in order:

conda update conda
conda update --all
conda remove QtPy PyQt5
pip install QtPy PyQt5

ERROR: spyder 4.1.4 requires pyqtwebengine<5.13; python_version >= "3", which is not installed. ERROR: spyder 4.1.4 has requirement pyqt5<5.13; python_version >= "3", but you'll have pyqt5 5.15.1 which is incompatible.

conda update anaconda-navigator
anaconda-navigator --reset
conda update anaconda-client
conda update -f anaconda-client

Through the steps above, I could open Jupyter and Anaconda Navigator. As for Spyder, it doesn't work anymore. I really hope someone could tell me how to make my Spyder available again.

PS: I found that actually I could launch Spyder "through Anaconda Navigator."

yu-cheng-kuo-28 commented 4 years ago

I think somehow I solved it though I got to launch Jupyter and Spyder in Anaconda Navigator from now on. Well, it's better than never launching Jupyter and Spyder.

john-2424 commented 4 years ago

I had got the same Error:

PythonQtError: No Qt bindings could be found

I followed this solution and now the anaconda-navigator launches. Thank You

yu-cheng-kuo-28 commented 4 years ago

I had got the same Error:

PythonQtError: No Qt bindings could be found

I followed this solution and now the anaconda-navigator launches. Thank You

Glad to know that.

sisika09 commented 4 years ago

I am new to this, and it doesn't launch even for me. How do I figure out if I have this Qtpython error as well. I tried entering 

conda update conda
conda update --all

but it said conda is not recognized as an internal or external command, operable program or batch file. please help me

yu-cheng-kuo-28 commented 4 years ago

I am new to this, and it doesn't launch even for me. How do I figure out if I have this Qtpython error as well. I tried entering 

conda update conda
conda update --all

but it said conda is not recognized as an internal or external command, operable program or batch file. please help me

I suggest you reinstall or install another version of Anaconda, cuz the command "conda" should have been in Anaconda once you installed any versions of Anaconda.

sisika09 commented 4 years ago

I am able to open anaconda navigator now, thank you, but I still can't launch spyder(not even through anaconda navigator) what should I do ?

yu-cheng-kuo-28 commented 4 years ago

I am able to open anaconda navigator now, thank you, but I still can't launch spyder(not even through anaconda navigator) what should I do ?

Glad to know that. Does the "conda" work now ? Have you run the codes above ?

sisika09 commented 4 years ago

Glad to know that. Does the "conda" work now ? Have you run the codes above ? 'conda' works now and I was able to open navigator as well as jupyter all thanks to you. But I am still not able to open spyder.You mentioned that you were able to open spyder from navigator, when I tried that it showed an error, File "C:\anaconda\lib\site-packages\qtpy\QtWebEngineWidgets.py", line 22, in from PyQt5.QtWebEngineWidgets import QWebEnginePage ImportError: DLL load failed while importing QtWebEngineWidgets: The specified procedure could not be found.

During handling of the above exception, another exception occurred:

Traceback (most recent call last): File "C:\anaconda\Scripts\spyder-script.py", line 10, in sys.exit(main()) File "C:\anaconda\lib\site-packages\spyder\app\start.py", line 201, in main from spyder.app import mainwindow File "C:\anaconda\lib\site-packages\spyder\app\mainwindow.py", line 84, in from qtpy import QtWebEngineWidgets # analysis:ignore File "C:\anaconda\lib\site-packages\qtpy\QtWebEngineWidgets.py", line 26, in from PyQt5.QtWebKitWidgets import QWebPage as QWebEnginePage ModuleNotFoundError: No module named 'PyQt5.QtWebKitWidgets'

Did you also face this error ? if so what did you do ? and thank you so much for your help.

yu-cheng-kuo-28 commented 4 years ago

Glad to know that. Does the "conda" work now ? Have you run the codes above ? 'conda' works now and I was able to open navigator as well as jupyter all thanks to you. But I am still not able to open spyder.You mentioned that you were able to open spyder from navigator, when I tried that it showed an error, File "C:\anaconda\lib\site-packages\qtpy\QtWebEngineWidgets.py", line 22, in from PyQt5.QtWebEngineWidgets import QWebEnginePage ImportError: DLL load failed while importing QtWebEngineWidgets: The specified procedure could not be found.

During handling of the above exception, another exception occurred:

Traceback (most recent call last): File "C:\anaconda\Scripts\spyder-script.py", line 10, in sys.exit(main()) File "C:\anaconda\lib\site-packages\spyder\app\start.py", line 201, in main from spyder.app import mainwindow File "C:\anaconda\lib\site-packages\spyder\app\mainwindow.py", line 84, in from qtpy import QtWebEngineWidgets # analysis:ignore File "C:\anaconda\lib\site-packages\qtpy\QtWebEngineWidgets.py", line 26, in from PyQt5.QtWebKitWidgets import QWebPage as QWebEnginePage ModuleNotFoundError: No module named 'PyQt5.QtWebKitWidgets'

Did you also face this error ? if so what did you do ? and thank you so much for your help.

I didn't face this error. Try the codes in the following order : 

conda remove QtPy PyQt5
pip install QtPy PyQt5

conda update conda
conda update --all 

conda update anaconda-navigator
anaconda-navigator --reset
conda update anaconda-client
conda update -f anaconda-client
sisika09 commented 4 years ago

conda remove QtPy PyQt5

When I ran this code, it said,

Collecting package metadata (repodata.json): done Solving environment: failed

PackagesNotFoundError: The following packages are missing from the target environment:

yu-cheng-kuo-28 commented 4 years ago

conda remove QtPy PyQt5

When I ran this code, it said,

Collecting package metadata (repodata.json): done Solving environment: failed

PackagesNotFoundError: The following packages are missing from the target environment:

  • pyqt5 could this be the reason why it's not working ?

Ok. Just skip this line and run the rest codes.

pip install QtPy PyQt5

conda update conda
conda update --all 

conda update anaconda-navigator
anaconda-navigator --reset
conda update anaconda-client
conda update -f anaconda-client