DataFrame data entry --pandas analysis of loss - Code World

DataFrame data entry --pandas analysis of loss

Others 2019-08-07 10:52:47 views: null

First, the loss of data classification

　　1) nd are divided into two types: None and np.nan (NaN)

　　Wherein, None, python objects, Object is a; and a float is nan

　　Two different types, the operation speed is different

　　2) pandas Two were treated as NaN (np.nan)

　　　Created by control columns have NaN data:

　　　　

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