七週成爲數據分析師（案例python腳本）

In [1]: import pandas as pd import numpy as np import matplotlib.pyplot as plt df=pd.read_csv("CDNOW_MASTER.CSV") df.head() Out[1]:   ID DATE NUM TOTAL 0 1 19970101 1 11.77 1 2 19970112 1 12.00 2 2 1

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