circuitpython/tests/micropython/heapalloc_fail_dict.py

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# test handling of failed heap allocation with dict
import micropython
# create dict
x = 1
micropython.heap_lock()
try:
{x: x}
except MemoryError:
print("MemoryError: create dict")
micropython.heap_unlock()
# create dict view
x = {1: 1}
micropython.heap_lock()
try:
x.items()
except MemoryError:
print("MemoryError: dict.items")
micropython.heap_unlock()