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import pandas as pd

import pandas as pd # data processing, CSV file I/O (e.g. pd.read_csv)

import numpy as np
import pandas as pd
df = pd.read_csv('/kaggle/input/videogamesales/vgsales.csv')
df

most_common_pub = df.groupby('Publisher').count().sort_values(by='Rank', ascending=False).head(1).index[0]
most_common_pub