pandas.Index.is_monotonic_increasing

Index.is_monotonic_increasing

return if the index is monotonic increasing (only equal or increasing) values.

Examples

>>> Index([1, 2, 3]).is_monotonic_increasing
True
>>> Index([1, 2, 2]).is_monotonic_increasing
True
>>> Index([1, 3, 2]).is_monotonic_increasing
False

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https://pandas.pydata.org/pandas-docs/version/0.20.3/generated/pandas.Index.is_monotonic_increasing.html