truediv argument of pandas.eval ignored.

[simonjayhawkins]

Code Sample, a copy-pastable example if possible

>>> import pandas as pd
>>>
>>> pd.__version__
'0.25.0+350.g330bedeb7'
>>>
>>> df = pd.DataFrame({'A': range(1, 6)})
>>>
>>> df.eval('A/2')
0    0.5
1    1.0
2    1.5
3    2.0
4    2.5
dtype: float64
>>>
>>> df.eval('A/2', truediv = False)
0    0.5
1    1.0
2    1.5
3    2.0
4    2.5
dtype: float64
>>>
>>> df.eval('A/2', truediv = True)
0    0.5
1    1.0
2    1.5
3    2.0
4    2.5
dtype: float64

Problem description

The docs state..

truediv : bool, optional
    Whether to use true division, like in Python >= 3

but the truediv argument is ignored.

[jbrockmendel]

I'm pretty sure this is a holdover from py2

[simonjayhawkins]

i think so too. so just need to clean and add test?

possible solution simonjayhawkins@3dd747c

but would that be a breaking api change?

[jbrockmendel]

that looks like a good fix, yes. i think it technically would be a breaking change, yes

[simonjayhawkins]

so the earliest we can introduce the deprecation is 1.0.0 and the earliest we apply the fix is 2.0.0!

[jbrockmendel]

Closed by #29812.