Calculating time difference between two rows

Question

I\'m trying to calculate the time difference between two rows using shift(), but I get an unexpected error. I may be missing something obvious

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Answer 1

Perhaps confusingly, pre-1.0 Series.shift and Index.shift used to not exactly do the same thing, the latter only being meaningfully defined for TimesSeries. Probably easiest to add your index as a column.

df['index_col'] = df.index
df['Delta']=(df['index_col'] - df['index_col'].shift(1))