[英]Cython error: Coercion from Python not allowed without the GIL
Trying to compile the following MCE: 尝试编译以下MCE:
from libc.math import fabs
cdef inline double fmax(double x, double y) nogil:
return x if x > y else y
cdef inline double fsign(double x) nogil :
if x == 0.:
return 0.
elif x > 0.:
return 1.
else:
return - 1.
cdef inline double ST(double u, double x) nogil:
return fsign(x) * fmax(fabs(x) - u, 0.)
I get, amongst other errors: 除其他错误外,我得到了:
Error compiling Cython file:
------------------------------------------------------------
...
else:
return - 1.
cdef inline double ST(double u, double x) nogil:
return fsign(x) * fmax(fabs(x) - u, 0.)
^
------------------------------------------------------------
test.pyx:18:35: Coercion from Python not allowed without the GIL
I have no clue what is happening, since from my point of view all values are double (except may 0. which could be a float, but can safely be promoted to double) 我不知道发生了什么,因为从我的观点来看,所有的值都是双倍的(可能是0,可以是浮点数,但可以安全地提升为double)
The setup.py
is: setup.py
是:
from distutils.core import setup
from Cython.Build import cythonize
setup(
ext_modules=cythonize("*.pyx"),
)
EDIT : Actually, there are plenty of different errors associated with this line, such as: 编辑 :实际上,这一行有很多不同的错误,例如:
test.pyx:18:35: Operation not allowed without gil
test.pyx:18:31: Calling gil-requiring function not allowed without gil
test.pyx:18:31: Accessing Python global or builtin not allowed without gil
test.pyx:18:33: Converting to Python object not allowed without gil
test.pyx:18:31: Constructing Python tuple not allowed without gil
这只是“一个错字”,但错误信息并没有帮助我很多,所以我发布这个作为答案:我使用了libc.math import fabs
,而不是cimport fabs
。
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