Python3 port

[arsenier]

Hey! This package looks exactly what I was looking for for my project, however I can't build it with Python3. Can you give some guidance how can I do that?

Here is the output of pip install .:

 arsenier ~/D/s/r/s/shm_manager venv master                                                                                                                    last: 0m 0s 13:11:14 
 ➜ pip install .
Processing /home/arsenier/Documents/ssl/rnd/shm/shm_manager
  Installing build dependencies ... done
  Getting requirements to build wheel ... done
  Preparing metadata (pyproject.toml) ... done
Building wheels for collected packages: shm_manager
  Building wheel for shm_manager (pyproject.toml) ... error
  error: subprocess-exited-with-error
  
  × Building wheel for shm_manager (pyproject.toml) did not run successfully.
  │ exit code: 1
  ╰─> [47 lines of output]
      In file included from shm_manager.cc:1:
      shm_manager.h:228:1: warning: converting to non-pointer type ‘long int’ from NULL [-Wconversion-null]
        228 | };
            | ^
      shm_manager.h:191:5: error: invalid conversion from ‘const char*’ to ‘Py_ssize_t’ {aka ‘long int’} [-fpermissive]
        191 |     "shm_manager.shm_manager",                  /*tp_name*/
            |     ^~~~~~~~~~~~~~~~~~~~~~~~~
            |     |
            |     const char*
      shm_manager.h:194:5: error: invalid conversion from ‘destructor’ {aka ‘void (*)(_object*)’} to ‘Py_ssize_t’ {aka ‘long int’} [-fpermissive]
        194 |     (destructor)shm_manager_dealloc,            /*tp_dealloc*/
            |     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
            |     |
            |     destructor {aka void (*)(_object*)}
      shm_manager.h:209:24: error: invalid conversion from ‘long unsigned int’ to ‘const char*’ [-fpermissive]
        209 |     Py_TPFLAGS_DEFAULT | Py_TPFLAGS_BASETYPE,   /*tp_flags*/
      shm_manager.h:210:5: error: cannot convert ‘char*’ to ‘traverseproc’ {aka ‘int (*)(_object*, int (*)(_object*, void*), void*)’} in initialization
        210 |     shm_manager_doc,                            /* tp_doc */
            |     ^~~~~~~~~~~~~~~
            |     |
            |     char*
      shm_manager.cc: In function ‘PyObject* shm_manager_read(PyObject*, PyObject*)’:
      shm_manager.cc:117:10: error: ‘PyString_FromStringAndSize’ was not declared in this scope; did you mean ‘PyBytes_FromStringAndSize’?
        117 |   return PyString_FromStringAndSize(
            |          ^~~~~~~~~~~~~~~~~~~~~~~~~~
            |          PyBytes_FromStringAndSize
      shm_manager.cc: In function ‘PyObject* shm_manager_read_pyobject(PyObject*, PyObject*)’:
      shm_manager.cc:126:21: error: ‘PyString_Type’ was not declared in this scope; did you mean ‘PySlice_Type’?
        126 |   ret -> ob_type = &PyString_Type;
            |                     ^~~~~~~~~~~~~
            |                     PySlice_Type
      shm_manager.cc: In function ‘PyObject* shm_manager_readline(PyObject*, PyObject*)’:
      shm_manager.cc:139:14: error: ‘PyString_FromStringAndSize’ was not declared in this scope; did you mean ‘PyBytes_FromStringAndSize’?
        139 |   auto ret = PyString_FromStringAndSize(_self->base_address + old_offset,
            |              ^~~~~~~~~~~~~~~~~~~~~~~~~~
            |              PyBytes_FromStringAndSize
      shm_manager.cc: In function ‘PyObject* initshm_manager()’:
      shm_manager.cc:166:9: error: return-statement with no value, in function returning ‘PyObject*’ {aka ‘_object*’} [-fpermissive]
        166 |         return;
            |         ^~~~~~
      shm_manager.cc:167:9: error: ‘Py_InitModule’ was not declared in this scope
        167 |     m = Py_InitModule("shm_manager", module_methods);
            |         ^~~~~~~~~~~~~
      shm_manager.cc:169:23: warning: control reaches end of non-void function [-Wreturn-type]
        169 |     PyModule_AddObject(m, "shm_manager", (PyObject *)&shm_managerType);
            |     ~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
      error: command '/usr/bin/x86_64-linux-gnu-g++' failed with exit code 1
      [end of output]
  
  note: This error originates from a subprocess, and is likely not a problem with pip.
  ERROR: Failed building wheel for shm_manager
Failed to build shm_manager
ERROR: Could not build wheels for shm_manager, which is required to install pyproject.toml-based projects

Also could you add license to your project so I can use the code?