A Series is pandas’ one-dimensional labeled data structure, associating values with an index. In data-processing code, Series objects can participate directly in column-wise arithmetic, avoiding explicit row iteration. section 7.2.2
Computing a ratio from two Series
Select the tip_amount and total_amount Series, divide them element by element, and calculate the resulting Series’ mean. This vectorized approach replaces row-wise callbacks and reduced the measured operation from seconds to milliseconds in the example. section 7.2.2
def get_tip_mean_vector(df):
frac_tip = df["tip_amount"] / df["total_amount"]
return frac_tip.mean()
This listing shows Series-based arithmetic and aggregation for a concise pandas computation. section 7.2.2
