Cython Compile error: Cannot convert to Python object
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austin aigbe
Jul 28, 2017, 5:29:24 PM7/28/17
to cython-users
Hello,
Kindly assist in resolving the following errors:
Compiling mapping.pyx because it changed.
[1/1] Cythonizing mapping.pyx
Error compiling Cython file:
------------------------------------------------------------
...
def set_n(self, int input_, int n):
assert (input_ >= 0) and (input_ < self.inputs)
assert (n >= 0) and (n <= 8)
assert (n != 1)
ControlPoints *p = self.points_list + input_
^
------------------------------------------------------------
mapping.pyx:57:18: Cannot assign to or delete this
Error compiling Cython file:
------------------------------------------------------------
...
def set_point(self, int input_, int index, float x, float y):
assert (input_ >= 0) and (input_ < self.inputs)
assert (index >= 0) and (index < 8)
ControlPoints * p = self.points_list + input_
^
------------------------------------------------------------
mapping.pyx:73:18: Cannot assign to or delete this
Error compiling Cython file:
------------------------------------------------------------
...
# constant mapping (common case)
if (self.inputs_used == 0):
return result
for j in range(self.inputs):
ControlPoints *p = self.points_list + j
^
------------------------------------------------------------
mapping.pyx:98:20: Cannot assign to or delete this
Error compiling Cython file:
------------------------------------------------------------
...
def set_n(self, int input_, int n):
assert (input_ >= 0) and (input_ < self.inputs)
assert (n >= 0) and (n <= 8)
assert (n != 1)
ControlPoints *p = self.points_list + input_
^
------------------------------------------------------------
mapping.pyx:57:18: 'ControlPoints' is not a constant, variable or function identifier
Error compiling Cython file:
------------------------------------------------------------
...
def set_n(self, int input_, int n):
assert (input_ >= 0) and (input_ < self.inputs)
assert (n >= 0) and (n <= 8)
assert (n != 1)
ControlPoints *p = self.points_list + input_
^
------------------------------------------------------------
mapping.pyx:57:21: undeclared name not builtin: p
Error compiling Cython file:
------------------------------------------------------------
...
def set_n(self, int input_, int n):
assert (input_ >= 0) and (input_ < self.inputs)
assert (n >= 0) and (n <= 8)
assert (n != 1)
ControlPoints *p = self.points_list + input_
^
------------------------------------------------------------
mapping.pyx:57:40: Cannot convert 'ControlPoints *' to Python object
Error compiling Cython file:
------------------------------------------------------------
...
assert (n >= 0) and (n <= 8)
assert (n != 1)
ControlPoints *p = self.points_list + input_
if (n != 0) and (p.n == 0):
self.points_list = self.inputs_used + 1
^
------------------------------------------------------------
mapping.pyx:60:42: Cannot assign type 'long' to 'ControlPoints *'
Error compiling Cython file:
------------------------------------------------------------
...
def set_point(self, int input_, int index, float x, float y):
assert (input_ >= 0) and (input_ < self.inputs)
assert (index >= 0) and (index < 8)
ControlPoints * p = self.points_list + input_
^
------------------------------------------------------------
mapping.pyx:73:18: 'ControlPoints' is not a constant, variable or function identifier
Error compiling Cython file:
------------------------------------------------------------
...
def set_point(self, int input_, int index, float x, float y):
assert (input_ >= 0) and (input_ < self.inputs)
assert (index >= 0) and (index < 8)
ControlPoints * p = self.points_list + input_
^
------------------------------------------------------------
mapping.pyx:73:41: Cannot convert 'ControlPoints *' to Python object
Error compiling Cython file:
------------------------------------------------------------
...
# constant mapping (common case)
if (self.inputs_used == 0):
return result
for j in range(self.inputs):
ControlPoints *p = self.points_list + j
^
------------------------------------------------------------
mapping.pyx:98:20: 'ControlPoints' is not a constant, variable or function identifier
Error compiling Cython file:
------------------------------------------------------------
...
# constant mapping (common case)
if (self.inputs_used == 0):
return result
for j in range(self.inputs):
ControlPoints *p = self.points_list + j
^
------------------------------------------------------------
mapping.pyx:98:42: Cannot convert 'ControlPoints *' to Python object
Traceback (most recent call last):
File "setup.py", line 11, in <module>
ext_modules = cythonize("mapping.pyx")
File "C:\Python27\lib\site-packages\Cython\Build\Dependencies.py", line 915, in cythonize
cythonize_one(*args)
File "C:\Python27\lib\site-packages\Cython\Build\Dependencies.py", line 1037, in cythonize_one
raise CompileError(None, pyx_file)
Cython.Compiler.Errors.CompileError: mapping.pyx
Code:
from libc.stdlib cimport *
cdef struct ControlPoints:
float xvalues[8]
float yvalues[8]
int n
# user-defined mappings
# (the curves you can edit in the brush settings)
cdef class Mapping:
cdef ControlPoints *points_list
cdef int inputs_used
cdef float base_value
cdef int inputs
def __cinit__(self):
self.points_list = NULL
def __init__(self, int inputs_):
self.inputs = inputs = inputs_
self.points_list = <ControlPoints*> malloc(sizeof(ControlPoints)*inputs_) # one for each input
cdef int i = 0
for i in range(inputs_):
self.points_list[i].n = 0
self.inputs_used = 0
self.base_value = 0
def __dealloc__(self):
if (self.points_list != NULL):
free(self.points_list)
def set_n(self, int input_, int n):
assert (input_ >= 0) and (input_ < self.inputs)
assert (n >= 0) and (n <= 8)
assert (n != 1)
ControlPoints *p = self.points_list + input_
if (n != 0) and (p.n == 0):
self.points_list = self.inputs_used + 1
if (n == 0) and (p.n != 0):
self.inputs_used = self.inputs_used - 1
assert(self.inputs_used >= 0)
assert(self.inputs_used <= self.inputs)
p.n = n
def set_point(self, int input_, int index, float x, float y):
assert (input_ >= 0) and (input_ < self.inputs)
assert (index >= 0) and (index < 8)
ControlPoints * p = self.points_list + input_
assert (index < p.n)
if (index > 0):
assert x >= p.xvalues[index-1]
p.xvalues[index] = x
p.yvalues[index] = y
def is_constant(self):
return self.inputs_used == 0
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