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I'm new to Django and trying to convert a HTML template to Django project.

This is my directory structure:

Why is sys.intern() failing to intern this string?

I started several attempts to get this complex working. As mentioned in so many other discussions the micropython modules are not recognized, e.g. machine. Python modules like numpy were also not found.

I think, the python environment is not working correctly and the modules are there but not found. But, there is no recommendation or tutorial that really solves this. How can I set this up?

What I did so far:

1. manually installed all components according to tutorials

2. another way: installed the pything coding pack which contains a lot of stuff.

3. The Windows paths have the correct folder paths to the components.

4. I set the obviously correct python interpreter in vscode

5. connection/communication with board is working. I can set up codes which dont contain micropython modules.

6. in other IDE's like thonny/mu the modules are found.

7. I also installed a python venv: I could install numpy inside this venv and later it was found in vscode (wasn't found before) when I used the venv python as interpreter in vscode. But I wasn't succesful with micropython in venv.

PS: I can use the micropython modules like machine or network and upload the sketch to the esp32 board. It is working on the board. But I cant run any of the sketches in vscode. I think that Vscode uses cpython instead of micropython but shouldn't this be working after the installations I mentioned?

When I run cpython with the -X showrefcount flag on an extension I'm writing, it reports a negative reference count (e.g. [-5538 refs, 13503 blocks]) when I return None from a function (using the Py-RETURN_NONE macro).

• The exact count varies between runs, but remains within the same order of magnitude.
• Whatever is happening, it seems to happen slowly; I need to call the extension function approximately 50,000 times before the reference count goes negative.
• If we replace Py_RETURN_NONE; with Py_INCREF(Py_None); return Py_None;, it changes nothing. Indeed, we can seemingly add an arbitrary number of Py_INCREF(Py_None)s without affecting the reference count at all.
• If we replace Py_RETURN_NONE; with return Py_None; and don't increment the reference count, it segfaults (as expected).
• If we replace the None return with another value, e.g. PyLong_FromLong(0);, the problem vanishes.

What is the cause of this? Related question: why is the reference count not zero after running an empty script?

I'm trying to get a project I have up and running on a Linux Ubuntu machine on a new MacBook Pro but I'm getting the following error when running pip install mysqlclient within a virtual environment. Please not, it install within issue in the main environment. I'm new to iOS so not sure where to go

I have python 3.9 installed in MacOS. I am not sure if that is the issue. I am trying to install dependencies for a astronomy data processing school. All the packages get installed but pyregion gives this huge error. I suspect if python 3.9 is the issue. I am not sure how to test if this works in python 3.7. If I downgrade python will it affect all the other dependencies that I have already installed?

Pyregion documentation says 3.4 and above are supported. I am getting this error when I try to install pyregion:
Not really sure what this means and how to resolve it.

I am using embedded Python (3.9) in ubuntu 20.04 and trying to import ctypes which produces the error _ctypes.cpython-39-x86_64-linux-gnu.so: undefined symbol: PyFloat_Type.

I am compiling a shared object, which is loaded dynamically using dlopen().

CMake is used to build the shared object. I am stating Python3 dependency like so: find_package(Python3 REQUIRED COMPONENTS Development Development.Embed) and link using target_link_libraries(${target_name} Boost::filesystem Python3::Python)

If I understand correctly, this tells CMake to link directly with libpython3.9.so (I also tried to explicitly state linking to libpython3.9.so, but that did not solve the issue). I do see that libpython3.9.so exports PyFloat_Type and that _ctypes.cpython-39-x86_64-linux-gnu.so does not.

The import is simply done by the PyRun_SimpleString() function: PyRun_SimpleString("import ctypes").

I should state that I have seen on the web some solutions, but none of them worked (like exporting LD_FLAGS="-rdynamic", but does also did not help).

I should also point out that importing using the interpreter (python3.9) works well.

Here is the build command generated by CMake: /usr/bin/c++ -fPIC -g -Xlinker -export-dynamic -shared -Wl,-soname,mytest.python3.so -o mytest.python3.so CMakeFiles/mytest.python3.dir/[mydir]/[myobjects].o /usr/lib/x86_64-linux-gnu/libboost_filesystem.so.1.71.0 /usr/lib/x86_64-linux-gnu/libpython3.9.so /usr/lib/x86_64-linux-gnu/libpython3.9.so

Thanks for any help in advance!

I cant use higher version of pip other than 20.2.4, since some SSL certification errors are occuring in higher versions and cannot reinstall any settings I have now (because of some office setup). Now I am using Pycaret and currently it supports only sklearn 0.23.2.

But my sklearn version is 0.24.1 and I am unable to downgrade it with 20.2.4 version of pip.

I also tried manual installation using setup.py file and it is also not success.

I am having Winpython and unable to install anaconda too.

Can someone help me to sort this problem? I am having python 3.9 . May be that is the problem?

Update:

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