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-rw-r--r--pyisda/curve.pyx1
1 files changed, 0 insertions, 1 deletions
diff --git a/pyisda/curve.pyx b/pyisda/curve.pyx
index c426846..40853ef 100644
--- a/pyisda/curve.pyx
+++ b/pyisda/curve.pyx
@@ -2,7 +2,6 @@ from libc.stdlib cimport malloc, free
from libc.string cimport memcpy
from libc.math cimport log1p
from libcpp.vector cimport vector
-from cython.operator cimport preincrement as preinc
from date cimport (JpmcdsStringToDateInterval, pydate_to_TDate, dcc,
JpmcdsDateIntervalToFreq, JpmcdsDateFwdThenAdjust, TDate_to_pydate,