On a fresh installation of Anaconda under Ubuntu... I am preprocessing my data in various ways prior to a classification task using Scikit-Learn.
from sklear
Just listen to what the warning is telling you:
Reshape your data either X.reshape(-1, 1) if your data has a single feature/column and X.reshape(1, -1) if it contains a single sample.
For your example type(if you have more than one feature/column):
temp = temp.reshape(1,-1)
For one feature/column:
temp = temp.reshape(-1,1)