circuitpython/tests/stress/gc_trace.py
David Lechner 3dc324d3f1 tests: Format all Python code with black, except tests in basics subdir.
This adds the Python files in the tests/ directory to be formatted with
./tools/codeformat.py.  The basics/ subdirectory is excluded for now so we
aren't changing too much at once.

In a few places `# fmt: off`/`# fmt: on` was used where the code had
special formatting for readability or where the test was actually testing
the specific formatting.
2020-03-30 13:21:58 +11:00

20 lines
393 B
Python

# test that the GC can trace nested objects
try:
import gc
except ImportError:
print("SKIP")
raise SystemExit
# test a big shallow object pointing to many unique objects
lst = [[i] for i in range(200)]
gc.collect()
print(lst)
# test a deep object
lst = [
[[[[(i, j, k, l)] for i in range(3)] for j in range(3)] for k in range(3)] for l in range(3)
]
gc.collect()
print(lst)