Python dataframe drop sloupec je nan

Příklady kódu

1
0

vyčistěte nas ze sloupu pandy

>>> df.dropna()
     name        toy       born
1  Batman  Batmobile 1940-04-25
0
0

prahová hodnota dropna

#dropping columns having more than 50% missing values(1994/2==1000)
df=df.dropna(thresh=1000,axis=1)

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