def hilbert(x, _cache=_cache):
    tmp = asarray(x)
    if iscomplexobj(tmp):
        return hilbert(tmp.real)+1j*hilbert(tmp.imag)
    n = len(x)
    omega = _cache.get(n)
    if omega is None:
        if len(_cache) > 20:
            while _cache:
                _cache.popitem()

        def kernel(k):
            if k > 0:
                return 1.0
            elif k < 0:
                return -1.0
            return 0.0
        omega = convolve.init_convolution_kernel(n,kernel,d=1)
        _cache[n] = omega
    overwrite_x = _datacopied(tmp, x)
    return convolve.convolve(tmp,omega,swap_real_imag=1,overwrite_x=overwrite_x)
:rtype: dict
dataset/ETHPy150Open scipy/scipy/scipy/fftpack/pseudo_diffs.py/hilbert--crossover with--dataset/ETHPy150Open zbyte64/django-hyperadmin/hyperadmin/endpoints.py/BaseEndpoint.get_state_kwargs