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try:
import btree
import io
except ImportError:
print("SKIP")
raise SystemExit
f = io.BytesIO()
db = btree.open(f)
db[b"foo"] = b"42"
db.close()
# Accessing an already-closed database should fail.
try:
print(db[b"foo"])
except ValueError:
print("ValueError")
try:
db[b"bar"] = b"43"
except ValueError:
print("ValueError")
try:
db.flush()
except ValueError:
print("ValueError")
try:
for k, v in db.items():
pass
except ValueError:
print("ValueError")
# Closing and printing an already-closed database should not fail.
db.close()
print(db)
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