def spi_read_data(samples):
    returnlist = []
    for i in range(samples):
        value = spi.xfer2([int(SPIsend)])
        returnlist.append(value)

    return returnlist

try:
    ADC_data = spi_read_data(10000)
    datafile_write(ADC_data, 10)
except KeyboardInterrupt:
    print("Interrupted by user!")
finally:
    spi.close()