Getting Started NFCPy を見るとwrite関数もある．
def ndef_write(block_number, block_data, wb, we):
global ndef_data_area
if block_number < len(ndef_data_area) / 16:
first, last = block_number*16, (block_number+1)*16
ndef_data_area[first:last] = block_data
return True
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