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import board
import busio

# Initialize I2C bus
i2c = busio.I2C(board.SCL, board.SDA)

# Scan for I2C devices and print their addresses
device_addresses = []
for device_address in range(128):
    try:
        i2c.writeto(device_address, b'')
        device_addresses.append(hex(device_address))
    except OSError:  # Error means no device at that address
        pass

if device_addresses:
    print("I2C devices found at addresses:")
    for address in device_addresses:
        print(address)
else:
    print("No I2C devices found.")