closes #24353

Author: anjsudh

doc/source/whatsnew/v0.24.0.rst

@@ -372,6 +372,7 @@ Other Enhancements
 - :meth:`DataFrame.to_stata` and :class:`pandas.io.stata.StataWriter117` can write mixed sting columns to Stata strl format (:issue:`23633`)
 - :meth:`DataFrame.between_time` and :meth:`DataFrame.at_time` have gained the an ``axis`` parameter (:issue:`8839`)
 - :class:`IntervalIndex` has gained the :attr:`~IntervalIndex.is_overlapping` attribute to indicate if the ``IntervalIndex`` contains any overlapping intervals (:issue:`23309`)
+- :meth:`eval()` now supports use of `floor` and `ceil` in the expression
 
 .. _whatsnew_0240.api_breaking:
 

pandas/core/computation/ops.py

@@ -23,7 +23,8 @@
 
 _unary_math_ops = ('sin', 'cos', 'exp', 'log', 'expm1', 'log1p',
                    'sqrt', 'sinh', 'cosh', 'tanh', 'arcsin', 'arccos',
-                   'arctan', 'arccosh', 'arcsinh', 'arctanh', 'abs', 'log10')
+                   'arctan', 'arccosh', 'arcsinh', 'arctanh', 'abs', 'log10',
+                   'floor', 'ceil')
 _binary_math_ops = ('arctan2',)
 _mathops = _unary_math_ops + _binary_math_ops