youknowone · Oct 26, 2026 · Oct 25, 2026
diff --git a/crates/vm/src/stdlib/_testinternalcapi.rs b/crates/vm/src/stdlib/_testinternalcapi.rs
@@ -1,7 +1,5 @@
 pub(crate) use _testinternalcapi::module_def;
 
-mod pytime;
-
 use core::sync::atomic::{AtomicUsize, Ordering};
 
 static RARE_SET_CLASS: AtomicUsize = AtomicUsize::new(0);
@@ -28,7 +26,6 @@ pub(crate) fn note_func_modification() {
 
 #[pymodule]
 mod _testinternalcapi {
-    use super::pytime::Round;
     use super::*;
     use crate::{
         AsObject, Py, PyObject, PyObjectRef, PyPayload, PyRef, PyResult, VirtualMachine,
@@ -43,6 +40,7 @@ mod _testinternalcapi {
         function::{FuncArgs, OptionalArg, PyComparisonValue},
         object::{Traverse, TraverseFn},
         protocol::{PyIterReturn, PyMappingMethods, PySequenceMethods},
+        stdlib::time::pytime::{self, Round},
         types::{
             AsMapping, AsSequence, Comparable, IterNext, Iterable, PyComparisonOp, PyTypeFlags,
             SelfIter,

diff --git a/crates/vm/src/stdlib/time.rs b/crates/vm/src/stdlib/time.rs
@@ -5,6 +5,7 @@
 // https://docs.python.org/3/library/time.html
 
 pub use decl::time;
+pub(crate) mod pytime;
 
 pub(crate) use decl::module_def;
 pub(crate) use decl::perf_counter_ns as profiler_time;
@@ -19,7 +20,7 @@ mod decl {
     use crate::convert::{ToPyException, ToPyObject};
     use crate::{
         AsObject, Py, PyObjectRef, PyResult, VirtualMachine,
-        builtins::{PyFloat, PyStr, PyStrRef, PyTypeRef},
+        builtins::{PyStr, PyStrRef, PyTypeRef},
         class::PyClassDef,
         common::wtf8::Wtf8Buf,
         function::{Either, FuncArgs, OptionalArg, OptionalOption},
@@ -33,7 +34,6 @@ mod decl {
     use core::time::Duration;
     #[cfg(not(any(unix, windows)))]
     use jiff::{Timestamp, Zoned, civil::DateTime, tz::TimeZone};
-    use num_traits::ToPrimitive;
     #[cfg(target_os = "wasi")]
     use rustpython_host_env::time::ClockId;
     #[cfg(any(unix, windows))]
@@ -128,43 +128,9 @@ mod decl {
     fn sleep(object: PyObjectRef, vm: &VirtualMachine) -> PyResult<()> {
         vm.audit("time.sleep", || (object.clone(),))?;
 
-        let overflow = || vm.new_overflow_error("timestamp out of range for C PyTime_t");
-        let nanoseconds = if object.number().is_index() {
-            let seconds = object.try_index(vm).map_err(|e| {
-                if e.fast_isinstance(vm.ctx.exceptions.overflow_error) {
-                    overflow()
-                } else {
-                    e
-                }
-            })?;
-            seconds
-                .as_bigint()
-                .to_i64()
-                .and_then(|seconds| seconds.checked_mul(SEC_TO_NS))
-                .ok_or_else(overflow)?
-        } else {
-            // PyFloat_AsDouble reads float subclasses without calling __float__.
-            let seconds = match object.downcast_ref::<PyFloat>() {
-                Some(value) => value.to_f64(),
-                None => object.try_float(vm)?.to_f64(),
-            };
-            if seconds.is_nan() {
-                return Err(vm.new_value_error("Invalid value NaN (not a number)"));
-            }
-            // _PyTime_ROUND_TIMEOUT rounds away from zero.
-            let nanoseconds = seconds * SEC_TO_NS as f64;
-            let nanoseconds = if nanoseconds >= 0.0 {
-                nanoseconds.ceil()
-            } else {
-                nanoseconds.floor()
-            };
-            let minimum = i64::MIN as f64;
-            // The signed maximum rounds up to 2**63 as a double.
-            if !(minimum..-minimum).contains(&nanoseconds) {
-                return Err(overflow());
-            }
-            nanoseconds as i64
-        };
+        // _PyTime_ROUND_TIMEOUT rounds away from zero.
+        let nanoseconds =
+            super::pytime::from_seconds_object(&object, super::pytime::Round::Up, vm)?;
         if nanoseconds < 0 {
             return Err(vm.new_value_error("sleep length must be non-negative"));
         }

diff --git a/...vm/src/stdlib/_testinternalcapi/pytime.rs → crates/vm/src/stdlib/time/pytime.rs b/...vm/src/stdlib/_testinternalcapi/pytime.rs → crates/vm/src/stdlib/time/pytime.rs
@@ -1,4 +1,4 @@
-//! Numeric conversions used by the internal PyTime test helpers.
+//! Signed nanosecond timestamps and the rounding used by Python's time APIs.
 
 #![cfg_attr(target_env = "musl", allow(deprecated))]
 
@@ -7,25 +7,25 @@ use num_traits::ToPrimitive;
 use rustpython_host_env::time::SEC_TO_NS;
 
 #[cfg(any(unix, windows))]
-pub(super) use rustpython_host_env::time::TimeT;
+pub(crate) use rustpython_host_env::time::TimeT;
 #[cfg(not(any(unix, windows)))]
-pub(super) type TimeT = i64;
+pub(crate) type TimeT = i64;
 
 const TIME_T_MIN: i64 = TimeT::MIN as _;
 const TIME_T_MAX: i64 = TimeT::MAX as _;
 const PYTIME_OVERFLOW: &str = "timestamp out of range for C PyTime_t";
 const TIME_T_OVERFLOW: &str = "timestamp out of range for platform time_t";
 
 #[derive(Clone, Copy)]
-pub(super) enum Round {
+pub(crate) enum Round {
     Floor,
     Ceiling,
     HalfEven,
     Up,
 }
 
 impl Round {
-    pub(super) fn from_int(value: i32, vm: &VirtualMachine) -> PyResult<Self> {
+    pub(crate) fn from_int(value: i32, vm: &VirtualMachine) -> PyResult<Self> {
         match value {
             0 => Ok(Self::Floor),
             1 => Ok(Self::Ceiling),
@@ -45,7 +45,7 @@ impl Round {
         }
     }
 
-    pub(super) fn divide(self, value: i64, divisor: i64) -> i64 {
+    pub(crate) fn divide(self, value: i64, divisor: i64) -> i64 {
         debug_assert!(divisor > 1);
         let quotient = value / divisor;
         let remainder = value % divisor;
@@ -65,7 +65,7 @@ impl Round {
     }
 }
 
-pub(super) fn from_seconds(seconds: i32) -> i64 {
+pub(crate) fn from_seconds(seconds: i32) -> i64 {
     i64::from(seconds) * SEC_TO_NS
 }
 
@@ -95,7 +95,7 @@ fn float_seconds(object: &PyObject, vm: &VirtualMachine) -> PyResult<f64> {
     Ok(seconds)
 }
 
-pub(super) fn from_seconds_object(
+pub(crate) fn from_seconds_object(
     object: &PyObject,
     round: Round,
     vm: &VirtualMachine,
@@ -132,7 +132,7 @@ fn float_to_time_t(seconds: f64, vm: &VirtualMachine) -> PyResult<i64> {
     Ok(seconds as i64)
 }
 
-pub(super) fn object_to_time_t(
+pub(crate) fn object_to_time_t(
     object: &PyObject,
     round: Round,
     vm: &VirtualMachine,
@@ -144,7 +144,7 @@ pub(super) fn object_to_time_t(
     }
 }
 
-pub(super) fn object_to_denominator(
+pub(crate) fn object_to_denominator(
     object: &PyObject,
     denominator: i64,
     round: Round,