Can't do linear regression in scikit-Learn due to “reshaping” issue

Question

I have a simple CSV with two columns:

1. ErrorWeek (a number for the week number in the year)
2. ErrorCount (for the number of errors in a given week)

Answer 1

Try this:

X_train, X_test, y_train, y_test = train_test_split(
    df[['ErrorWeek']], df['ErrorCount'], random_state=0)

PS pay attention at additional square brackets: df[['ErrorWeek']]