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print((10).to_bytes(1, "little"))
print((111111).to_bytes(4, "little"))
print((100).to_bytes(10, "little"))
print(int.from_bytes(b"\x00\x01\0\0\0\0\0\0", "little"))
print(int.from_bytes(b"\x01\0\0\0\0\0\0\0", "little"))
print(int.from_bytes(b"\x00\x01\0\0\0\0\0\0", "little"))
# check that extra zero bytes don't change the internal int value
print(int.from_bytes(bytes(20), "little") == 0)
print(int.from_bytes(b"\x01" + bytes(20), "little") == 1)
# big-endian conversion
print((10).to_bytes(1, "big"))
print((100).to_bytes(10, "big"))
print(int.from_bytes(b"\0\0\0\0\0\0\0\0\0\x01", "big"))
print(int.from_bytes(b"\x01\0", "big"))
# negative number of bytes should raise an error
try:
(1).to_bytes(-1, "little")
except ValueError:
print("ValueError")
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