plt.plot meaning of [:,0] and [:,1]

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Understanding Python's slice notation 29 answers

Python Array Slice With Comma? 3 answers

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It is notation used in Numpy/Pandas.

[ : , 0 ] meas (more or less) [ first_row:last_row , column_0 ] - you have 2-dimensional list/matrix/array and you get all values in column 0 (from all rows).

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