我试过这个 成功加载 cython 但我无法使用 cimport
%%cython
from libc.math cimport sqrt
import numpy as np
def filt_conv3(double complex[:,:] filterInput, Py_ssize_t sample_per_symbol, double[:] h, int flag, Py_ssize_t num_of_taps):
cdef Py_ssize_t input_batch_size = filterInput.shape[0]
cdef Py_ssize_t input_length = filterInput.shape[1]
cdef Py_ssize_t num_of_output = num_of_taps + (input_length-1) * sample_per_symbol
cdef double complex[:,:] output = np.zeros((input_batch_size, num_of_output), dtype=np.complex)
cdef double complex[:,:] FiltSig = np.zeros((input_batch_size, num_of_output), dtype=np.complex)
但它返回给我以下错误:
Cell In[12], line 4
from libc.math cimport sqrt
^
SyntaxError: invalid syntax
这个语法错误的原因是什么? 我该怎么办?