Critical issue: full_fact fails after recent update of pandas to 1.5.0

[gedeck]

This code from your README file worked until pandas was updated to 1.5.0.

from doepy import build
df = build.full_fact(
{
    'Pressure':[40,55,70],
    'Temperature':[290, 320, 350],
    'Flow rate':[0.2,0.4], 
    'Time':[5,8]}
)
print(df)

It gives now the following. Note how flow rate is returning the values 0 and 1 and not 0.2 and 0.4.

    Pressure  Temperature  Flow rate  Time
0       40.0        290.0        0.0   5.0
1       55.0        290.0        0.0   5.0
...
7       55.0        350.0        0.0   5.0
8       70.0        350.0        0.0   5.0
9       40.0        290.0        1.0   5.0
10      55.0        290.0        1.0   5.0
...
16      55.0        350.0        1.0   5.0
17      70.0        350.0        1.0   5.0

I did a bit of digging around and the issue seems to depend on the factor values. Once you switch a factor to float, the value is no longer returned; just 0, 1, 2, and so on:

from doepy import build
df = build.full_fact(
{
    'Pressure':[40.1,55,70],
    'Flow rate':[5, 8.123], 
})
print(df)

   Pressure  Flow rate
0       0.0        5.0
1      55.0        5.0
2      70.0        5.0
3       0.0        1.0
4      55.0        1.0
5      70.0        1.0

Python version used was 3.9