diff --git a/td-rs-base/src/py.rs b/td-rs-base/src/py.rs
index 49d1e7a..0fbcd2d 100644
--- a/td-rs-base/src/py.rs
+++ b/td-rs-base/src/py.rs
@@ -213,7 +213,7 @@ impl ToPyObj for f32 {
 
 impl CheckPyObj for f32 {
     unsafe fn check_py_obj(obj: *mut pyo3_ffi::PyObject) -> bool {
-        pyo3_ffi::PyFloat_Check(obj) != 0
+        pyo3_ffi::PyFloat_Check(obj) != 0 || pyo3_ffi::PyLong_Check(obj) != 0
     }
 }
 
@@ -231,7 +231,7 @@ impl ToPyObj for f64 {
 
 impl CheckPyObj for f64 {
     unsafe fn check_py_obj(obj: *mut pyo3_ffi::PyObject) -> bool {
-        pyo3_ffi::PyFloat_Check(obj) != 0
+        pyo3_ffi::PyFloat_Check(obj) != 0 || pyo3_ffi::PyLong_Check(obj) != 0
     }
 }
 
diff --git a/td-rs-derive-py/src/lib.rs b/td-rs-derive-py/src/lib.rs
index b524ea6..19d7709 100644
--- a/td-rs-derive-py/src/lib.rs
+++ b/td-rs-derive-py/src/lib.rs
@@ -154,6 +154,7 @@ fn impl_py_op(input: &DeriveInput) -> TokenStream {
                                                 .as_ptr()
                                                 .cast::<std::os::raw::c_char>(),
                                         );
+                                        return -1;
                                     }
 
                                     let value = FromPyObj::from_py_obj(value);