recursive_data.py « misc « tests - micropython - MicroPython - a lean and efficient Python implementation for microcontrollers and constrained systems

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# This tests that printing recursive data structure doesn't lead to segfault.
import _io as io

l = [1, 2, 3, None]
l[-1] = l
try:
    print(l, file=io.StringIO())
except RuntimeError:
    print("RuntimeError")