RustPython · youknowone · Jun 17, 2026 · Jun 16, 2026 · Jun 16, 2026 · Jun 16, 2026
diff --git a/Cargo.toml b/Cargo.toml
@@ -49,7 +49,7 @@
 flamescope = { version = "0.1.2", optional = true }

 rustls = { workspace = true, optional = true }
 rustls-graviola = { workspace = true, optional = true }

 [target.'cfg(windows)'.dependencies]
 libc = { workspace = true }
@@ -382,10 +382,12 @@
 useless_let_if_seq = "warn"
 
 # pedantic lints to enforce gradually
+bool_to_int_with_if = "warn"
 checked_conversions = "warn"
 cloned_instead_of_copied = "warn"
 collapsible_else_if = "warn"
 comparison_chain = "warn"
+doc_link_with_quotes = "warn"
 duration_suboptimal_units = "warn"
 explicit_deref_methods = "warn"
 explicit_into_iter_loop = "warn"
@@ -397,19 +399,29 @@
 inconsistent_struct_constructor = "warn"
 index_refutable_slice = "warn"
 inefficient_to_string = "warn"
+ip_constant = "warn"
 iter_filter_is_ok = "warn"
 iter_filter_is_some = "warn"
+large_futures = "warn"
+manual_instant_elapsed = "warn"
 manual_is_variant_and = "warn"
 map_unwrap_or = "warn"
 match_bool = "warn"
 must_use_candidate = "warn"
 mut_mut = "warn"
 needless_bitwise_bool = "warn"
 needless_for_each = "warn"
+non_std_lazy_statics = "warn"
 option_as_ref_cloned = "warn"
 ptr_offset_by_literal = "warn"
+range_minus_one = "warn"
+range_plus_one = "warn"
 redundant_else = "warn"
 return_self_not_must_use = "warn"
+single_char_pattern = "warn"
+unchecked_time_subtraction = "warn"
 uninlined_format_args = "warn"
+unnecessary_box_returns = "warn"
+unnecessary_join = "warn"
 unnecessary_wraps = "warn"
 unnested_or_patterns = "warn"
diff --git a/crates/codegen/src/compile.rs b/crates/codegen/src/compile.rs
@@ -4411,10 +4411,10 @@ impl Compiler {
             .chain(parameters.kwonlyargs.iter().map(|x| &x.parameter))
             .chain(parameters.kwarg.as_deref());
 
-        let num_annotations: u32 =
+        let num_annotations =
             u32::try_from(parameters_iter.filter(|p| p.annotation.is_some()).count())
                 .expect("too many annotations")
-                + if returns.is_some() { 1 } else { 0 };
+                + u32::from(returns.is_some());
 
         // Compile annotations inside the annotation scope
         let parameters_iter = parameters
@@ -6925,7 +6925,7 @@ impl Compiler {
         let has_default =
             num_cases > 1 && is_trailing_wildcard_default(&cases.last().unwrap().pattern);
 
-        let case_count = num_cases - if has_default { 1 } else { 0 };
+        let case_count = num_cases - usize::from(has_default);
         for (i, m) in cases.iter().enumerate().take(case_count) {
             // Only copy the subject if not on the last case
             if i != case_count - 1 {

diff --git a/crates/host_env/src/ctypes.rs b/crates/host_env/src/ctypes.rs
@@ -1096,7 +1096,7 @@ pub fn simple_storage_value_to_bytes_endian(
             result
         }
         "?" => match value {
-            SimpleStorageValue::Bool(value) => vec![if value { 1 } else { 0 }],
+            SimpleStorageValue::Bool(value) => vec![u8::from(value)],
             _ => vec![0],
         },
         "v" => match value {
@@ -1435,11 +1435,7 @@ pub fn ffi_value_from_type_code(type_code: &str, buffer: &[u8]) -> FfiValue {
                 .map_or(0.0, f64::from_ne_bytes),
         ),
         "z" | "Z" | "P" | "O" => FfiValue::Pointer(read_pointer_from_buffer(buffer)),
-        "?" => FfiValue::U8(if buffer.first().is_some_and(|&b| b != 0) {
-            1
-        } else {
-            0
-        }),
+        "?" => FfiValue::U8(u8::from(buffer.first().is_some_and(|&b| b != 0))),
         "u" => FfiValue::U32(buffer.first_chunk().copied().map_or(0, u32::from_ne_bytes)),
         _ => FfiValue::Pointer(0),
     }

diff --git a/crates/host_env/src/overlapped.rs b/crates/host_env/src/overlapped.rs
@@ -892,7 +892,7 @@ unsafe extern "system" fn post_to_queue_callback(
     unsafe {
         let _ = windows_sys::Win32::System::IO::PostQueuedCompletionStatus(
             data.completion_port,
-            if timer_or_wait_fired { 1 } else { 0 },
+            u32::from(timer_or_wait_fired),
             0,
             data.overlapped,
         );

diff --git a/crates/stdlib/src/ssl.rs b/crates/stdlib/src/ssl.rs
@@ -3496,7 +3496,7 @@ mod _ssl {
                         // When server_hostname=None, use an IP address to suppress SNI
                         // no hostname = no SNI extension
                         ServerName::IpAddress(
-                            core::net::IpAddr::V4(core::net::Ipv4Addr::new(127, 0, 0, 1)).into(),
+                            core::net::IpAddr::V4(core::net::Ipv4Addr::LOCALHOST).into(),
                         )
                     };
 

diff --git a/crates/vm/src/builtins/range.rs b/crates/vm/src/builtins/range.rs
@@ -406,12 +406,7 @@ impl Py<PyRange> {
     #[pymethod]
     fn count(&self, item: PyObjectRef, vm: &VirtualMachine) -> PyResult<usize> {
         if let Ok(int) = item.clone().downcast::<PyInt>() {
-            let count = if self.index_of(int.as_bigint()).is_some() {
-                1
-            } else {
-                0
-            };
-            Ok(count)
+            Ok(usize::from(self.index_of(int.as_bigint()).is_some()))
         } else {
             // Dealing with classes who might compare equal with ints in their
             // __eq__, slow search.

diff --git a/crates/vm/src/stdlib/_ast.rs b/crates/vm/src/stdlib/_ast.rs
@@ -512,14 +512,17 @@ pub(crate) fn parse_func_type(
 fn type_ignores_from_source(vm: &VirtualMachine, source: &str) -> Vec<PyObjectRef> {
     let mut ignores = Vec::new();
     for (idx, line) in source.lines().enumerate() {
-        let Some(pos) = line.find("#") else {
+        let Some(pos) = line.find('#') else {
             continue;
         };
+
         let comment = &line[pos + 1..];
         let comment = comment.trim_start();
+
         let Some(rest) = comment.strip_prefix("type: ignore") else {
             continue;
         };
+
         let tag = rest.trim_start();
         let tag = if tag.is_empty() { "" } else { tag };
         let node = NodeAst

diff --git a/crates/vm/src/stdlib/_ctypes/base.rs b/crates/vm/src/stdlib/_ctypes/base.rs
@@ -1111,11 +1111,7 @@ impl PyCData {
     fn _b_needsfree_(&self) -> i32 {
         // Borrowed (from_address) or has base object → 0 (don't free)
         // Owned and no base → 1 (need to free)
-        if self.is_borrowed() || self.base.read().is_some() {
-            0
-        } else {
-            1
-        }
+        i32::from(!(self.is_borrowed() || self.base.read().is_some()))
     }
 
     // CDataType_methods - shared across all ctypes types

diff --git a/crates/vm/src/warn.rs b/crates/vm/src/warn.rs
@@ -138,7 +138,7 @@ fn get_warnings_attr(
     module.get_attr(attr_name, vm).ok()
 }
 
-/// Get the warnings filters list from sys.modules['warnings'].filters,
+/// Get the warnings filters list from `sys.modules['warnings'].filters`,
 /// falling back to vm.state.warnings.filters.
 fn get_warnings_filters(vm: &VirtualMachine) -> PyListRef {
     if let Some(filters_obj) = get_warnings_attr(vm, identifier!(&vm.ctx, filters), false)
@@ -149,7 +149,7 @@ fn get_warnings_filters(vm: &VirtualMachine) -> PyListRef {
     vm.state.warnings.filters.clone()
 }
 
-/// Get the default action from sys.modules['warnings']._defaultaction,
+/// Get the default action from `sys.modules['warnings']._defaultaction`,
 /// falling back to vm.state.warnings.default_action.
 fn get_default_action(vm: &VirtualMachine) -> PyResult<PyObjectRef> {
     if let Some(action) = get_warnings_attr(vm, identifier!(&vm.ctx, defaultaction), false) {
@@ -164,7 +164,7 @@ fn get_default_action(vm: &VirtualMachine) -> PyResult<PyObjectRef> {
     Ok(vm.state.warnings.default_action.clone().into())
 }
 
-/// Get the once registry from sys.modules['warnings']._onceregistry,
+/// Get the once registry from `sys.modules['warnings']._onceregistry`,
 /// falling back to vm.state.warnings.once_registry.
 fn get_once_registry(vm: &VirtualMachine) -> PyResult<PyObjectRef> {
     if let Some(registry) = get_warnings_attr(vm, identifier!(&vm.ctx, onceregistry), false) {