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JSON Editor Markdown Editor YAML Editor TagsColor Buy us a Coffee JSON Formatter FAQ Privacy Policy About Contact History Where am I right now? Blog Calculators [ad_1] convert python code to c online free convert python code to c online free convert python code to c online free convert python code to c online free [ad_2] +01: from libc.math cimport sqrt __pyx_t_1 = PyDict_New(); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 1; __pyx_clineno = __LINE__; goto __pyx_L1_error;} __Pyx_GOTREF(__pyx_t_1); if (PyDict_SetItem(__pyx_d, __pyx_n_s_test, __pyx_t_1) < 0) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 1; __pyx_clineno = __LINE__; goto __pyx_L1_error;} __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0; +02: import numpy as np __pyx_t_1 = __Pyx_Import(__pyx_n_s_numpy, 0, -1); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 2; __pyx_clineno = __LINE__; goto __pyx_L1_error;} __Pyx_GOTREF(__pyx_t_1); if (PyDict_SetItem(__pyx_d, __pyx_n_s_np, __pyx_t_1) < 0) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 2; __pyx_clineno = __LINE__; goto __pyx_L1_error;} __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0; 03: cimport numpy as np 04: cimport cython 05: 06: # function pointer +07: ctypedef double (*func)(double[:, ::1], int i, int j) typedef double (*__pyx_t_46_cython_magic_b37b7c839d5aa08ad1e5a2ad53e9c211_func)(__Pyx_memviewslice, int, int); 08: 09: @cython.boundscheck(False) 10: @cython.wraparound(False) +11: cdef double cy_euclidean(double[:, ::1] vs, int i, int j): static double __pyx_f_46_cython_magic_b37b7c839d5aa08ad1e5a2ad53e9c211_cy_euclidean(__Pyx_memviewslice __pyx_v_vs, int __pyx_v_i, int __pyx_v_j) {
double __pyx_v_d;
double __pyx_v_t;
int __pyx_v_k;
int __pyx_v_n;
double __pyx_r;
__Pyx_RefNannyDeclarations
__Pyx_RefNannySetupContext("cy_euclidean", 0);
/* … */
/* function exit code */
__pyx_L0:;
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}
+12: cdef double d = 0.0, t __pyx_v_d = 0.0; 13: cdef int k 14: +15: cdef int n = vs.shape[1] __pyx_v_n = (__pyx_v_vs.shape[1]); +16: for k in range(n): __pyx_t_1 = __pyx_v_n;
for (__pyx_t_2 = 0; __pyx_t_2 < __pyx_t_1; __pyx_t_2+=1) {
__pyx_v_k = __pyx_t_2;
+17: t = vs[i, k] - vs[j, k] __pyx_t_3 = __pyx_v_i;
__pyx_t_4 = __pyx_v_k;
__pyx_t_5 = __pyx_v_j;
__pyx_t_6 = __pyx_v_k;
__pyx_v_t = ((*((double *) ( /* dim=1 */ ((char *) (((double *) ( /* dim=0 */ (__pyx_v_vs.data + __pyx_t_3 * __pyx_v_vs.strides[0]) )) + __pyx_t_4)) ))) - (*((double *) ( /* dim=1 */ ((char *) (((double *) ( /* dim=0 */ (__pyx_v_vs.data + __pyx_t_5 * __pyx_v_vs.strides[0]) )) + __pyx_t_6)) ))));
+18: d += t*t __pyx_v_d = (__pyx_v_d + (__pyx_v_t * __pyx_v_t)); } +19: return sqrt(d) __pyx_r = sqrt(__pyx_v_d); goto __pyx_L0; 20: 21: @cython.boundscheck(False) 22: @cython.wraparound(False) +23: def cy_pairwise(double[:,::1] vs, metric='euclidean'): /* Python wrapper */
static PyObject *__pyx_pw_46_cython_magic_b37b7c839d5aa08ad1e5a2ad53e9c211_1cy_pairwise(PyObject *__pyx_self, PyObject *__pyx_args, PyObject *__pyx_kwds); /*proto*/
static PyMethodDef __pyx_mdef_46_cython_magic_b37b7c839d5aa08ad1e5a2ad53e9c211_1cy_pairwise = {"cy_pairwise", (PyCFunction)__pyx_pw_46_cython_magic_b37b7c839d5aa08ad1e5a2ad53e9c211_1cy_pairwise, METH_VARARGS|METH_KEYWORDS, 0};
static PyObject *__pyx_pw_46_cython_magic_b37b7c839d5aa08ad1e5a2ad53e9c211_1cy_pairwise(PyObject *__pyx_self, PyObject *__pyx_args, PyObject *__pyx_kwds) {
__Pyx_memviewslice __pyx_v_vs = { 0, 0, { 0 }, { 0 }, { 0 } };
PyObject *__pyx_v_metric = 0;
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{
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values[1] = ((PyObject *)__pyx_n_s_euclidean);
if (unlikely(__pyx_kwds)) {
Py_ssize_t kw_args;
const Py_ssize_t pos_args = PyTuple_GET_SIZE(__pyx_args);
switch (pos_args) {
case 2: values[1] = PyTuple_GET_ITEM(__pyx_args, 1);
case 1: values[0] = PyTuple_GET_ITEM(__pyx_args, 0);
case 0: break;
default: goto __pyx_L5_argtuple_error;
}
kw_args = PyDict_Size(__pyx_kwds);
switch (pos_args) {
case 0:
if (likely((values[0] = PyDict_GetItem(__pyx_kwds, __pyx_n_s_vs)) != 0)) kw_args--;
else goto __pyx_L5_argtuple_error;
case 1:
if (kw_args > 0) {
PyObject* value = PyDict_GetItem(__pyx_kwds, __pyx_n_s_metric);
if (value) { values[1] = value; kw_args--; }
}
}
if (unlikely(kw_args > 0)) {
if (unlikely(__Pyx_ParseOptionalKeywords(__pyx_kwds, __pyx_pyargnames, 0, values, pos_args, "cy_pairwise") < 0)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 23; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
}
} else {
switch (PyTuple_GET_SIZE(__pyx_args)) {
case 2: values[1] = PyTuple_GET_ITEM(__pyx_args, 1);
case 1: values[0] = PyTuple_GET_ITEM(__pyx_args, 0);
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default: goto __pyx_L5_argtuple_error;
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}
__pyx_v_vs = __Pyx_PyObject_to_MemoryviewSlice_d_dc_double(values[0]); if (unlikely(!__pyx_v_vs.memview)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 23; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
__pyx_v_metric = values[1];
}
goto __pyx_L4_argument_unpacking_done;
__pyx_L5_argtuple_error:;
__Pyx_RaiseArgtupleInvalid("cy_pairwise", 0, 1, 2, PyTuple_GET_SIZE(__pyx_args)); {__pyx_filename = __pyx_f[0]; __pyx_lineno = 23; __pyx_clineno = __LINE__; goto __pyx_L3_error;}
__pyx_L3_error:;
__Pyx_AddTraceback("_cython_magic_b37b7c839d5aa08ad1e5a2ad53e9c211.cy_pairwise", __pyx_clineno, __pyx_lineno, __pyx_filename);
__Pyx_RefNannyFinishContext();
return NULL;
__pyx_L4_argument_unpacking_done:;
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int __pyx_lineno = 0;
const char *__pyx_filename = NULL;
int __pyx_clineno = 0;
/* function exit code */
__Pyx_RefNannyFinishContext();
return __pyx_r;
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static PyObject *__pyx_pf_46_cython_magic_b37b7c839d5aa08ad1e5a2ad53e9c211_cy_pairwise(CYTHON_UNUSED PyObject *__pyx_self, __Pyx_memviewslice __pyx_v_vs, PyObject *__pyx_v_metric) {
Py_ssize_t __pyx_v_n;
__Pyx_memviewslice __pyx_v_ds = { 0, 0, { 0 }, { 0 }, { 0 } };
int __pyx_v_i;
int __pyx_v_j;
__pyx_t_46_cython_magic_b37b7c839d5aa08ad1e5a2ad53e9c211_func __pyx_v_dist;
PyObject *__pyx_r = NULL;
__Pyx_RefNannyDeclarations
__Pyx_RefNannySetupContext("cy_pairwise", 0);
/* … */
/* function exit code */
__pyx_L1_error:;
__Pyx_XDECREF(__pyx_t_1);
__Pyx_XDECREF(__pyx_t_2);
__Pyx_XDECREF(__pyx_t_3);
__Pyx_XDECREF(__pyx_t_4);
__Pyx_XDECREF(__pyx_t_5);
__PYX_XDEC_MEMVIEW(&__pyx_t_6, 1);
__Pyx_AddTraceback("_cython_magic_b37b7c839d5aa08ad1e5a2ad53e9c211.cy_pairwise", __pyx_clineno, __pyx_lineno, __pyx_filename);
__pyx_r = NULL;
__pyx_L0:;
__PYX_XDEC_MEMVIEW(&__pyx_v_ds, 1);
__PYX_XDEC_MEMVIEW(&__pyx_v_vs, 1);
__Pyx_XGIVEREF(__pyx_r);
__Pyx_RefNannyFinishContext();
return __pyx_r;
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/* … */
__pyx_tuple__20 = PyTuple_Pack(7, __pyx_n_s_vs, __pyx_n_s_metric, __pyx_n_s_n, __pyx_n_s_ds, __pyx_n_s_i, __pyx_n_s_j, __pyx_n_s_dist); if (unlikely(!__pyx_tuple__20)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 23; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
__Pyx_GOTREF(__pyx_tuple__20);
__Pyx_GIVEREF(__pyx_tuple__20);
/* … */
__pyx_t_1 = PyCFunction_NewEx(&__pyx_mdef_46_cython_magic_b37b7c839d5aa08ad1e5a2ad53e9c211_1cy_pairwise, NULL, __pyx_n_s_cython_magic_b37b7c839d5aa08ad1); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 23; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
__Pyx_GOTREF(__pyx_t_1);
if (PyDict_SetItem(__pyx_d, __pyx_n_s_cy_pairwise, __pyx_t_1) < 0) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 23; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
__Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;
__pyx_codeobj__21 = (PyObject*)__Pyx_PyCode_New(2, 0, 7, 0, 0, __pyx_empty_bytes, __pyx_empty_tuple, __pyx_empty_tuple, __pyx_tuple__20, __pyx_empty_tuple, __pyx_empty_tuple, __pyx_kp_s_Users_cliburn_ipython_cython__c, __pyx_n_s_cy_pairwise, 23, __pyx_empty_bytes); if (unlikely(!__pyx_codeobj__21)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 23; __pyx_clineno = __LINE__; goto __pyx_L1_error;}
+24: n = vs.shape[0] __pyx_v_n = (__pyx_v_vs.shape[0]); +25: cdef double[:, ::1] ds = np.empty((n, n)) __pyx_t_2 = __Pyx_GetModuleGlobalName(__pyx_n_s_np); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 25; __pyx_clineno = __LINE__; goto __pyx_L1_error;} __Pyx_GOTREF(__pyx_t_2); __pyx_t_3 = __Pyx_PyObject_GetAttrStr(__pyx_t_2, __pyx_n_s_empty); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 25; __pyx_clineno = __LINE__; goto __pyx_L1_error;} __Pyx_GOTREF(__pyx_t_3); __Pyx_DECREF(__pyx_t_2); __pyx_t_2 = 0; __pyx_t_2 = PyInt_FromSsize_t(__pyx_v_n); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 25; __pyx_clineno = __LINE__; goto __pyx_L1_error;} __Pyx_GOTREF(__pyx_t_2); __pyx_t_4 = PyInt_FromSsize_t(__pyx_v_n); if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 25; __pyx_clineno = __LINE__; goto __pyx_L1_error;} __Pyx_GOTREF(__pyx_t_4); __pyx_t_5 = PyTuple_New(2); if (unlikely(!__pyx_t_5)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 25; __pyx_clineno = __LINE__; goto __pyx_L1_error;} __Pyx_GOTREF(__pyx_t_5); PyTuple_SET_ITEM(__pyx_t_5, 0, __pyx_t_2); __Pyx_GIVEREF(__pyx_t_2); PyTuple_SET_ITEM(__pyx_t_5, 1, __pyx_t_4); __Pyx_GIVEREF(__pyx_t_4); __pyx_t_2 = 0; __pyx_t_4 = 0; __pyx_t_4 = NULL; if (CYTHON_COMPILING_IN_CPYTHON && unlikely(PyMethod_Check(__pyx_t_3))) { __pyx_t_4 = PyMethod_GET_SELF(__pyx_t_3); if (likely(__pyx_t_4)) { PyObject* function = PyMethod_GET_FUNCTION(__pyx_t_3); __Pyx_INCREF(__pyx_t_4); __Pyx_INCREF(function); __Pyx_DECREF_SET(__pyx_t_3, function); } } if (!__pyx_t_4) { __pyx_t_1 = __Pyx_PyObject_CallOneArg(__pyx_t_3, __pyx_t_5); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 25; __pyx_clineno = __LINE__; goto __pyx_L1_error;} __Pyx_DECREF(__pyx_t_5); __pyx_t_5 = 0; __Pyx_GOTREF(__pyx_t_1); } else { __pyx_t_2 = PyTuple_New(1+1); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 25; __pyx_clineno = __LINE__; goto __pyx_L1_error;} __Pyx_GOTREF(__pyx_t_2); PyTuple_SET_ITEM(__pyx_t_2, 0, __pyx_t_4); __Pyx_GIVEREF(__pyx_t_4); __pyx_t_4 = NULL; PyTuple_SET_ITEM(__pyx_t_2, 0+1, __pyx_t_5); __Pyx_GIVEREF(__pyx_t_5); __pyx_t_5 = 0; __pyx_t_1 = __Pyx_PyObject_Call(__pyx_t_3, __pyx_t_2, NULL); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 25; __pyx_clineno = __LINE__; goto __pyx_L1_error;} __Pyx_GOTREF(__pyx_t_1); __Pyx_DECREF(__pyx_t_2); __pyx_t_2 = 0; } __Pyx_DECREF(__pyx_t_3); __pyx_t_3 = 0; __pyx_t_6 = __Pyx_PyObject_to_MemoryviewSlice_d_dc_double(__pyx_t_1); if (unlikely(!__pyx_t_6.memview)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 25; __pyx_clineno = __LINE__; goto __pyx_L1_error;} __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0; __pyx_v_ds = __pyx_t_6; __pyx_t_6.memview = NULL; __pyx_t_6.data = NULL; 26: cdef int i, j 27: 28: cdef func dist +29: if metric == 'euclidean': __pyx_t_7 = (__Pyx_PyString_Equals(__pyx_v_metric, __pyx_n_s_euclidean, Py_EQ)); if (unlikely(__pyx_t_7 < 0)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 29; __pyx_clineno = __LINE__; goto __pyx_L1_error;} if (__pyx_t_7) { +30: dist = &cy_euclidean __pyx_v_dist = (&__pyx_f_46_cython_magic_b37b7c839d5aa08ad1e5a2ad53e9c211_cy_euclidean);
goto __pyx_L3;
}
/*else*/ {
31: else: +32: raise ValueError('Metric not found') __pyx_t_1 = __Pyx_PyObject_Call(__pyx_builtin_ValueError, __pyx_tuple_, NULL); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 32; __pyx_clineno = __LINE__; goto __pyx_L1_error;} __Pyx_GOTREF(__pyx_t_1); __Pyx_Raise(__pyx_t_1, 0, 0, 0); __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0; {__pyx_filename = __pyx_f[0]; __pyx_lineno = 32; __pyx_clineno = __LINE__; goto __pyx_L1_error;} } __pyx_L3:; /* … */ __pyx_tuple_ = PyTuple_Pack(1, __pyx_kp_s_Metric_not_found); if (unlikely(!__pyx_tuple_)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 32; __pyx_clineno = __LINE__; goto __pyx_L1_error;} __Pyx_GOTREF(__pyx_tuple_); __Pyx_GIVEREF(__pyx_tuple_); 33: +34: for i in range(n): __pyx_t_8 = __pyx_v_n;
for (__pyx_t_9 = 0; __pyx_t_9 < __pyx_t_8; __pyx_t_9+=1) {
__pyx_v_i = __pyx_t_9;
+35: for j in range(n): __pyx_t_10 = __pyx_v_n;
for (__pyx_t_11 = 0; __pyx_t_11 < __pyx_t_10; __pyx_t_11+=1) {
__pyx_v_j = __pyx_t_11;
+36: if i == j: __pyx_t_7 = ((__pyx_v_i == __pyx_v_j) != 0);
if (__pyx_t_7) {
+37: ds[i, j] = 0 __pyx_t_12 = __pyx_v_i;
__pyx_t_13 = __pyx_v_j;
*((double *) ( /* dim=1 */ ((char *) (((double *) ( /* dim=0 */ (__pyx_v_ds.data + __pyx_t_12 * __pyx_v_ds.strides[0]) )) + __pyx_t_13)) )) = 0.0;
goto __pyx_L8;
}
+38: elif i > j: __pyx_t_7 = ((__pyx_v_i > __pyx_v_j) != 0);
if (__pyx_t_7) {
+39: ds[i, j] = ds[j, i] __pyx_t_14 = __pyx_v_j;
__pyx_t_15 = __pyx_v_i;
__pyx_t_16 = __pyx_v_i;
__pyx_t_17 = __pyx_v_j;
*((double *) ( /* dim=1 */ ((char *) (((double *) ( /* dim=0 */ (__pyx_v_ds.data + __pyx_t_16 * __pyx_v_ds.strides[0]) )) + __pyx_t_17)) )) = (*((double *) ( /* dim=1 */ ((char *) (((double *) ( /* dim=0 */ (__pyx_v_ds.data + __pyx_t_14 * __pyx_v_ds.strides[0]) )) + __pyx_t_15)) )));
goto __pyx_L8;
}
/*else*/ {
40: else: +41: ds[i, j] = dist(vs, i, j) __pyx_t_18 = __pyx_v_i;
__pyx_t_19 = __pyx_v_j;
*((double *) ( /* dim=1 */ ((char *) (((double *) ( /* dim=0 */ (__pyx_v_ds.data + __pyx_t_18 * __pyx_v_ds.strides[0]) )) + __pyx_t_19)) )) = __pyx_v_dist(__pyx_v_vs, __pyx_v_i, __pyx_v_j);
}
__pyx_L8:;
}
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+42: return np.asarray(ds) __Pyx_XDECREF(__pyx_r); __pyx_t_3 = __Pyx_GetModuleGlobalName(__pyx_n_s_np); if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 42; __pyx_clineno = __LINE__; goto __pyx_L1_error;} __Pyx_GOTREF(__pyx_t_3); __pyx_t_2 = __Pyx_PyObject_GetAttrStr(__pyx_t_3, __pyx_n_s_asarray); if (unlikely(!__pyx_t_2)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 42; __pyx_clineno = __LINE__; goto __pyx_L1_error;} __Pyx_GOTREF(__pyx_t_2); __Pyx_DECREF(__pyx_t_3); __pyx_t_3 = 0; __pyx_t_3 = __pyx_memoryview_fromslice(__pyx_v_ds, 2, (PyObject *(*)(char *)) __pyx_memview_get_double, (int (*)(char *, PyObject *)) __pyx_memview_set_double, 0);; if (unlikely(!__pyx_t_3)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 42; __pyx_clineno = __LINE__; goto __pyx_L1_error;} __Pyx_GOTREF(__pyx_t_3); __pyx_t_5 = NULL; if (CYTHON_COMPILING_IN_CPYTHON && unlikely(PyMethod_Check(__pyx_t_2))) { __pyx_t_5 = PyMethod_GET_SELF(__pyx_t_2); if (likely(__pyx_t_5)) { PyObject* function = PyMethod_GET_FUNCTION(__pyx_t_2); __Pyx_INCREF(__pyx_t_5); __Pyx_INCREF(function); __Pyx_DECREF_SET(__pyx_t_2, function); } } if (!__pyx_t_5) { __pyx_t_1 = __Pyx_PyObject_CallOneArg(__pyx_t_2, __pyx_t_3); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 42; __pyx_clineno = __LINE__; goto __pyx_L1_error;} __Pyx_DECREF(__pyx_t_3); __pyx_t_3 = 0; __Pyx_GOTREF(__pyx_t_1); } else { __pyx_t_4 = PyTuple_New(1+1); if (unlikely(!__pyx_t_4)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 42; __pyx_clineno = __LINE__; goto __pyx_L1_error;} __Pyx_GOTREF(__pyx_t_4); PyTuple_SET_ITEM(__pyx_t_4, 0, __pyx_t_5); __Pyx_GIVEREF(__pyx_t_5); __pyx_t_5 = NULL; PyTuple_SET_ITEM(__pyx_t_4, 0+1, __pyx_t_3); __Pyx_GIVEREF(__pyx_t_3); __pyx_t_3 = 0; __pyx_t_1 = __Pyx_PyObject_Call(__pyx_t_2, __pyx_t_4, NULL); if (unlikely(!__pyx_t_1)) {__pyx_filename = __pyx_f[0]; __pyx_lineno = 42; __pyx_clineno = __LINE__; goto __pyx_L1_error;} __Pyx_GOTREF(__pyx_t_1); __Pyx_DECREF(__pyx_t_4); __pyx_t_4 = 0; } __Pyx_DECREF(__pyx_t_2); __pyx_t_2 = 0; __pyx_r = __pyx_t_1; __pyx_t_1 = 0; goto __pyx_L0; How do I convert Python code to C?Converting Python Code to C for speed. %%cython -a def cy_fib(n): a = 0 b = 1 for i in range(n): a, b = a+b, a return a.. %%cython -a cpdef double cy_fib(int n): cdef double a, b a = 0 b = 1 for i in range(n): a, b = a+b, a return a.. %timeit py_fib(100) %timeit numba_fib(100) %timeit cy_fib(100). Can I compile Python to C?Compile Python to C
Python code can make calls directly into C modules. Those C modules can be either generic C libraries or libraries built specifically to work with Python. Cython generates the second kind of module: C libraries that talk to Python's internals, and that can be bundled with existing Python code.
Can Cython convert Python to C?The Basics of Cython
The Cython compiler will convert it into C code which makes equivalent calls to the Python/C API. But Cython is much more than that, because parameters and variables can be declared to have C data types.
Can you make Python as fast as C?On my computer, the equivalent implementation in C takes 0.32 seconds. Although C remains the master of speed in general, PyPy can beat C in some cases. “If you want your code to magically run faster, you should probably just use PyPy.”
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