pandas.errors.NumExprClobberingError

exception pandas.errors.NumExprClobberingError

Exception raised when trying to use a built-in numexpr name as a variable name.

eval or query will throw the error if the engine is set to ‘numexpr’. ‘numexpr’ is the default engine value for these methods if the numexpr package is installed.

Examples

>>> df = pd.DataFrame({'abs': [1, 1, 1]})
>>> df.query("abs > 2") 
... # NumExprClobberingError: Variables in expression "(abs) > (2)" overlap...
>>> sin, a = 1, 2
>>> pd.eval("sin + a", engine='numexpr') 
... # NumExprClobberingError: Variables in expression "(sin) + (a)" overlap...