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import numpy as np

import numpy as np # linear algebra

import pandas as pd

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

df = pd.read_csv('../input/ibutton2016/Temp2016.csv', skiprows=[i for i in range(1, 1096)], skipfooter=1112, engine='python', parse_dates=['Var1'], index_col=['Var1'])
df.index.name = 'Date'
df.index = pd.to_datetime(df.index)
df = df.replace(0, np.nan)
df.head()