Dear all! I am reading data from Sense Hat accelerometer and writing it to file. Can someone explain why, at some point encoding of the written file changes? First 10 lines of the output file are ok: 2017-08-09 15:41:35.299113,0.0592413879931,0.00484891841188,1.13197183609 2017-08-09 15:41:35.322011...