Fix features of vortex-python

Signed-off-by: Robert Kruszewski <github@robertk.io>

Author: robert3005

Cargo.lock

@@ -52,3 +52,6 @@ tokio = { workspace = true, features = ["fs", "rt-multi-thread"] }
 url = { workspace = true }
 vortex = { workspace = true, features = ["object_store", "tokio"] }
 vortex-tui = { workspace = true, optional = true }
+
+[dev-dependencies]
+vortex-array = { path = "../vortex-array", features = ["_test-harness"] }

vortex-python/Cargo.toml

@@ -57,7 +57,7 @@ fn range_len(start: isize, stop: isize, step: isize) -> Option<usize> {
             usize::try_from(len).vortex_expect("stop >= start, step > 0, so len is non-negative");
         Some(len)
     } else {
-        assert!(step != 0);
+        assert_ne!(step, 0);
 
         if stop > start {
             return None;