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 ;)