What does -1 mean in numpy reshape?

What does -1 mean in numpy reshape?

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load csv into 2D matrix with numpy for plotting

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Opposite of melt in python pandas

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Pandas long to wide reshape, by two variables

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AttributeError: 'Series' object has no attribute 'reshape'

python python-3.x pandas reshape attributeerror

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Melt the Upper Triangular Matrix of a Pandas Dataframe

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Reshape an array in NumPy

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Reshape wide to long in pandas

python pandas dataframe reshape

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Is this the best way to add an extra dimension to a numpy array in one line of code?

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pandas pivot table to data frame [duplicate]

python pandas reshape

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Python reshape list to ndim array

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Reshape of pandas series?

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Intuition and idea behind reshaping 4D array to 2D array in NumPy

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pandas pivot_table column names

python pandas pivot-table reshape

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Python Reshape 3d array into 2d

python numpy reshape

python