pandas pipe logo pandas pipe: arguments

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Notes

The final plot is created via;

import pandas as pd

df = pd.read_csv('https://calmcode.io/datasets/bigmac.csv')

def set_dtypes(dataf):
    return (dataf
            .assign(date=lambda d: pd.to_datetime(d['date']))
            .sort_values(['currency_code', 'date']))

def remove_outliers(dataf, min_row_country=32):
    countries = (dataf
                .groupby('currency_code')
                .agg(n=('name', 'count'))
                .loc[lambda d: d['n'] >= min_row_country]
                .index)
    return (dataf
            .loc[lambda d: d['currency_code'].isin(countries)])

(df
  .pipe(set_dtypes)
  .pipe(remove_outliers, min_row_country=32))