I'm using ``` px.__version__ ``` ``` '0.3.0' ``` and jupyter notebook, python 3.6 and I tried this code. ``` a = pd.DataFrame({"data":[1,2,3,4,100]}, index=['A','B','C','5','0']).reset_index() print(a) px.bar(a, x='index', y='data') ```  I expected this kind of something...  Is this bug..? or was I confused something..?