quickest way to to convert list of tuples to a series

Question

Consider a list of tuples lst

lst = [(\'a\', 10), (\'b\', 20)]

question
What is the quickest way to

Answer 1

One approach with NumPy assuming regular length list -

arr = np.asarray(lst)
out = pd.Series(arr[:,1], index = arr[:,0])

Sample run -

In [147]: lst = [('a', 10), ('b', 20), ('j',1000)]

In [148]: arr = np.asarray(lst)

In [149]: pd.Series(arr[:,1], index = arr[:,0])
Out[149]: 
a      10
b      20
j    1000
dtype: object