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

vodafone_subset_6 = pd.read_csv('../input/vodafone6nm/vodafone-subset-6.csv')

df = vodafone_subset_6[['target', 'ROUM', 'phone_value', 'DATA_VOLUME_WEEKDAYS', 'DATA_VOLUME_WEEKENDS', 'device_brand', 'software_os_vendor', 'software_os_name', 'software_os_version', 'device_type_rus', 'AVG_ARPU', 'lifetime', 'how_long_same_model', 'ecommerce_score', 'banks_sms_count', 'instagram_volume', 'viber_volume', 'linkedin_volume', 'tinder_volume', 'telegram_volume', 'google_volume', 'whatsapp_volume', 'youtube_volume']]

df['device_type_rus'].value_counts()