pandas常用操作

对csv：

df=pd.read_csv('/workspace/7_17test/72111417',delimiter="\t")df = pd.read_csv("/workspace/7_17test/104541644", header=0,delimiter="\t",names=["order", "timestamp", "from", "to", "msg", "quote"])

对dataframe：

df["from"]    #选取‘from’这一列；froms = set(df["from"])    #把‘from’这一列转换成set集合df[df["from"] == _from]    #选取‘from’等于某个特定_from的那些行df.iloc[0,2]    #选取某一项df[df["from"] == _from]    # 选取from列等于某个_from的那些行