Since Cython mixes C and Python semantics, some things may be a bit surprising or unintuitive. Work always goes on to make Cython more natural for Python users, so this list may change in the future.
10**-2
==
0
，而不是
0.01
like in Python.
int
variables
a
and
b
,
a
%
b
has the same sign as the second argument (following Python semantics) rather than having the same sign as the first (as in C). The C behavior can be obtained, at some speed gain, by enabling the cdivision directive (versions prior to Cython 0.12 always followed C semantics).
cdef
unsigned
n
=
10;
print(range(-n,
n))
will print an empty list, since
-n
wraps around to a large positive integer prior to being passed to the
range
函数。
float
type actually wraps C
double
values, and the
int
type in Python 2.x wraps C
long
值。
