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  1. df = pd.read_csv('data.csv', chunksize=1000, low_memory=False)
  2. device_data = pd.concat(df, ignore_index=True)
  3.  
  4. iter_csv = pd.read_csv('data.csv', iterator=True, chunksize=1000)
  5. df = pd.concat([chunk[chunk['ID'] == 1234567] for chunk in iter_csv])
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