Problem with .inv() function

[kosibakonrad]

I tried a very simple example (exactly what in the tutorial https://github.com/pygae/clifford/blob/master/docs/tutorials/g2-quick-start.ipynb) but the inv function does not work for me .. what can be the reason for this?

import clifford as cf

layout, blades = cf.Cl(2) # creates a 2-dimensional clifford algebra

e1 = blades['e1']
e2 = blades['e2']
e12 = blades['e12']

a = e1+e2     # the vector
n = e1        # the reflector
-n*a*n.inv()  # reflect `a` in hyperplane normal to `n`

last line gives error:

C:\Users\dell\PycharmProjects\GA4\venv\Scripts\python.exe C:/Users/dell/PycharmProjects/GA4/main.py Traceback (most recent call last): File "C:/Users/dell/PycharmProjects/GA4/main.py", line 11, in -nan.inv() # reflect a in hyperplane normal to n File "C:\Users\dell\PycharmProjects\GA4\venv\lib\site-packages\clifford_multivector.py", line 150, in mul newValue = self.layout.gmt_func(self.value, other.value) File "C:\Users\dell\PycharmProjects\GA4\venv\lib\site-packages\clifford_layout.py", line 36, in get val = self.fget(obj) File "C:\Users\dell\PycharmProjects\GA4\venv\lib\site-packages\clifford_layout.py", line 635, in gmt_func return get_mult_function(self.gmt, self._basis_blade_order.grades) File "C:\Users\dell\PycharmProjects\GA4\venv\lib\site-packages\clifford_layout.py", line 36, in get val = self.fget(obj) File "C:\Users\dell\PycharmProjects\GA4\venv\lib\site-packages\clifford_layout.py", line 365, in gmt return construct_gmt(self._basis_blade_order, self.sig) File "C:\Users\dell\PycharmProjects\GA4\venv\lib\site-packages\clifford_layout.py", line 134, in construct_gmt coords, mult_table_vals = _numba_construct_gmt( File "C:\Users\dell\PycharmProjects\GA4\venv\lib\site-packages\numba\dispatcher.py", line 420, in _compile_for_args raise e File "C:\Users\dell\PycharmProjects\GA4\venv\lib\site-packages\numba\dispatcher.py", line 353, in _compile_for_args return self.compile(tuple(argtypes)) File "C:\Users\dell\PycharmProjects\GA4\venv\lib\site-packages\numba\compiler_lock.py", line 32, in _acquire_compile_lock return func(*args, **kwargs) File "C:\Users\dell\PycharmProjects\GA4\venv\lib\site-packages\numba\dispatcher.py", line 768, in compile cres = self._compiler.compile(args, return_type) File "C:\Users\dell\PycharmProjects\GA4\venv\lib\site-packages\numba\dispatcher.py", line 77, in compile status, retval = self._compile_cached(args, return_type) File "C:\Users\dell\PycharmProjects\GA4\venv\lib\site-packages\numba\dispatcher.py", line 91, in _compile_cached retval = self._compile_core(args, return_type) File "C:\Users\dell\PycharmProjects\GA4\venv\lib\site-packages\numba\dispatcher.py", line 104, in _compile_core cres = compiler.compile_extra(self.targetdescr.typing_context, File "C:\Users\dell\PycharmProjects\GA4\venv\lib\site-packages\numba\compiler.py", line 551, in compile_extra return pipeline.compile_extra(func) File "C:\Users\dell\PycharmProjects\GA4\venv\lib\site-packages\numba\compiler.py", line 331, in compile_extra return self._compile_bytecode() File "C:\Users\dell\PycharmProjects\GA4\venv\lib\site-packages\numba\compiler.py", line 393, in _compile_bytecode return self._compile_core() File "C:\Users\dell\PycharmProjects\GA4\venv\lib\site-packages\numba\compiler.py", line 373, in _compile_core raise e File "C:\Users\dell\PycharmProjects\GA4\venv\lib\site-packages\numba\compiler.py", line 364, in _compile_core pm.run(self.state) File "C:\Users\dell\PycharmProjects\GA4\venv\lib\site-packages\numba\compiler_machinery.py", line 347, in run raise patched_exception File "C:\Users\dell\PycharmProjects\GA4\venv\lib\site-packages\numba\compiler_machinery.py", line 338, in run self._runPass(idx, pass_inst, state) File "C:\Users\dell\PycharmProjects\GA4\venv\lib\site-packages\numba\compiler_lock.py", line 32, in _acquire_compile_lock return func(*args, **kwargs) File "C:\Users\dell\PycharmProjects\GA4\venv\lib\site-packages\numba\compiler_machinery.py", line 302, in _runPass mutated |= check(pss.run_pass, internal_state) File "C:\Users\dell\PycharmProjects\GA4\venv\lib\site-packages\numba\compiler_machinery.py", line 275, in check mangled = func(compiler_state) File "C:\Users\dell\PycharmProjects\GA4\venv\lib\site-packages\numba\typed_passes.py", line 407, in run_pass NativeLowering().run_pass(state) File "C:\Users\dell\PycharmProjects\GA4\venv\lib\site-packages\numba\typed_passes.py", line 349, in run_pass lower.lower() File "C:\Users\dell\PycharmProjects\GA4\venv\lib\site-packages\numba\lowering.py", line 195, in lower self.lower_normal_function(self.fndesc) File "C:\Users\dell\PycharmProjects\GA4\venv\lib\site-packages\numba\lowering.py", line 248, in lower_normal_function entry_block_tail = self.lower_function_body() File "C:\Users\dell\PycharmProjects\GA4\venv\lib\site-packages\numba\lowering.py", line 273, in lower_function_body self.lower_block(block) File "C:\Users\dell\PycharmProjects\GA4\venv\lib\site-packages\numba\lowering.py", line 288, in lower_block self.lower_inst(inst) File "C:\Users\dell\PycharmProjects\GA4\venv\lib\site-packages\numba\lowering.py", line 476, in lower_inst func(self, inst) File "C:\Users\dell\PycharmProjects\GA4\venv\lib\site-packages\numba\npyufunc\parfor.py", line 52, in _lower_parfor_parallel ensure_parallel_support() File "C:\Users\dell\PycharmProjects\GA4\venv\lib\site-packages\numba\parfor.py", line 4156, in ensure_parallel_support raise errors.UnsupportedParforsError(msg) numba.errors.UnsupportedParforsError: Failed in nopython mode pipeline (step: nopython mode backend) The 'parallel' target is not currently supported on Windows operating systems when using Python 2.7, or on 32 bit hardware. [1] During: lowering "id=0[LoopNest(index_variable = parfor_index.16, range = (0, $const26.10, 1)), LoopNest(index_variable = parfor_index.17, range = (0, $array_length.31, 1))]{219: <ir.Block at C:\Users\dell\PycharmProjects\GA4\venv\lib\site-packages\clifford_layout.py (104)>}Var($parfor_index_tuple_var.23, _layout.py:104)" at C:\Users\dell\PycharmProjects\GA4\venv\lib\site-packages\clifford_layout.py (104)

Process finished with exit code 1

I tried different versions of packages but couldn't fix it. Please help ;)