diff --git a/data-raw/_generate_python_wrapper.sh b/data-raw/_generate_python_wrapper.sh
index a8b2ee01a..f56b139fd 100644
--- a/data-raw/_generate_python_wrapper.sh
+++ b/data-raw/_generate_python_wrapper.sh
@@ -141,6 +141,32 @@ import numpy as np
 # Import the AMR R package
 amr_r = importr('AMR')
 
+def convert_to_r(value):
+    """Convert Python lists/tuples to typed R vectors.
+
+    rpy2's default_converter passes Python lists to R as R lists, not as
+    character/numeric vectors. This causes element-wise type-check functions
+    such as is.mic(), is.sir(), and is.disk() to return a logical vector
+    rather than a single logical, breaking R's scalar && operator.
+
+    This helper converts Python lists and tuples to the appropriate R vector
+    type based on the element types, so R always receives a proper vector."""
+    if isinstance(value, (list, tuple)):
+        if len(value) == 0:
+            return StrVector([])
+        # bool must be checked before int because bool is a subclass of int
+        if all(isinstance(v, bool) for v in value):
+            return robjects.vectors.BoolVector(value)
+        if all(isinstance(v, int) for v in value):
+            return IntVector(value)
+        if all(isinstance(v, float) for v in value):
+            return FloatVector(value)
+        if all(isinstance(v, str) for v in value):
+            return StrVector(value)
+        # Mixed types: coerce all to string
+        return StrVector([str(v) for v in value])
+    return value
+
 def convert_to_python(r_output):
     # Check if it's a StrVector (R character vector)
     if isinstance(r_output, StrVector):
@@ -166,10 +192,13 @@ def convert_to_python(r_output):
     return r_output
 
 def r_to_python(r_func):
-    """Decorator that runs an rpy2 function under a localconverter
-    and then applies convert_to_python to its output."""
+    """Decorator that converts Python list/tuple inputs to typed R vectors,
+    runs the rpy2 function under a localconverter, and converts the output
+    to a Python type."""
     @functools.wraps(r_func)
     def wrapper(*args, **kwargs):
+        args = tuple(convert_to_r(a) for a in args)
+        kwargs = {k: convert_to_r(v) for k, v in kwargs.items()}
         with localconverter(default_converter + numpy2ri.converter + pandas2ri.converter):
             return convert_to_python(r_func(*args, **kwargs))
     return wrapper
@@ -312,4 +341,3 @@ cd ../PythonPackage/AMR
 pip3 install build
 python3 -m build
 # python3 setup.py sdist bdist_wheel
-