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try:
from io import StringIO
import json
except ImportError:
print("SKIP")
raise SystemExit
s = StringIO()
json.dump(False, s)
print(s.getvalue())
s = StringIO()
json.dump({"a": (2, [3, None])}, s)
print(s.getvalue())
# dump to a small-int not allowed
try:
json.dump(123, 1)
except (AttributeError, OSError): # CPython and uPy have different errors
print("Exception")
# dump to an object not allowed
try:
json.dump(123, {})
except (AttributeError, OSError): # CPython and uPy have different errors
print("Exception")
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