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-rw-r--r--tests/import/builtin_ext.py4
1 files changed, 4 insertions, 0 deletions
diff --git a/tests/import/builtin_ext.py b/tests/import/builtin_ext.py
index dd8f95cbc..87465f1d5 100644
--- a/tests/import/builtin_ext.py
+++ b/tests/import/builtin_ext.py
@@ -1,3 +1,4 @@
+# Verify that sys is a builtin.
import sys
print(sys, hasattr(sys, "__file__"))
@@ -7,6 +8,8 @@ sys.path.append("ext")
# All three should only get builtins, despite sys.py, usys.py, and
# micropython.py being in the path.
+# usys isn't extensible, but has a special-cased alias for backwards
+# compatibility.
import micropython
print(micropython, hasattr(micropython, "__file__"))
@@ -31,6 +34,7 @@ print(time, hasattr(time, "__file__"), time.sleep, time.extra)
import uos
print(uos, hasattr(uos, "__file__"), hasattr(uos, "extra"))
+
import utime
print(utime, hasattr(utime, "__file__"), hasattr(utime, "extra"))