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PERF: remove useless overrides #21523

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Merged
merged 1 commit into from
Jun 18, 2018
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PERF: remove useless overrides #21523

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1 change: 1 addition & 0 deletions doc/source/whatsnew/v0.23.2.txt
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Expand Up @@ -27,6 +27,7 @@ Performance Improvements
- Improved performance of membership checks in :class:`CategoricalIndex`
(i.e. ``x in ci``-style checks are much faster). :meth:`CategoricalIndex.contains`
is likewise much faster (:issue:`21369`)
- Improved performance of :meth:`MultiIndex.is_unique` (:issue:`21522`)
-

Documentation Changes
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12 changes: 0 additions & 12 deletions pandas/core/indexes/multi.py
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Expand Up @@ -852,14 +852,6 @@ def _has_complex_internals(self):
# to disable groupby tricks
return True

@cache_readonly
def is_monotonic(self):
"""
return if the index is monotonic increasing (only equal or
increasing) values.
"""
return self.is_monotonic_increasing

@cache_readonly
def is_monotonic_increasing(self):
"""
Expand Down Expand Up @@ -887,10 +879,6 @@ def is_monotonic_decreasing(self):
# monotonic decreasing if and only if reverse is monotonic increasing
return self[::-1].is_monotonic_increasing

@cache_readonly
def is_unique(self):
return not self.duplicated().any()

@cache_readonly
def _have_mixed_levels(self):
""" return a boolean list indicated if we have mixed levels """
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