Put a 2d Array into a Pandas Series

Question

I have a 2D Numpy array that I would like to put in a pandas Series (not a DataFrame):

>>> import pandas as pd
>>> import numpy as np
>>&         


        

Answer 1

 pd.Series(list(a))

is consistently slower than

pd.Series(a.tolist())

tested 20,000,000 -- 500,000 rows

a = np.ones((500000,2))

showing only 1,000,000 rows:

%timeit pd.Series(list(a))
1 loop, best of 3: 301 ms per loop

%timeit pd.Series(a.tolist())
1 loop, best of 3: 261 ms per loop