Set column names in pandas data frame from_dict with orient = 'index'

Question

I looked already at this question: pandas create named columns in dataframe from dict. However, my example is slightly different.

I have a dictionary: my_dict

Answer 1

Is there a reason you can't set the column names on the next line?

my_dict = {'key1' : [1,2,3], 'key2' : [4,5,6], 'key3' :[7,8,9]}
df = pd.DataFrame.from_dict(my_dict, orient='index')
df.columns = ['one', 'two', 'three']

Should work.