Pandas DataFrame: dropna() function

Last update on August 19 2022 21:50:51 (UTC/GMT +8 hours)

DataFrame-dropna() function

The dropna() function is used to remove missing values.

Syntax:

DataFrame.dropna(self, axis=0, how='any', thresh=None, subset=None, inplace=False)

Parameters:

Name	Description	Type/Default Value	Required / Optional
axis	Determine if rows or columns which contain missing values are removed. 0, or ‘index’ : Drop rows which contain missing values. 1, or ‘columns’ : Drop columns which contain missing value.	{0 or ‘index’, 1 or ‘columns’} Default Value: 0	Required
how	Determine if row or column is removed from DataFrame, when we have at least one NA or all NA. ‘any’ : If any NA values are present, drop that row or column. ‘all’ : If all values are NA, drop that row or column.	{‘any’, ‘all’} Default Value: ‘any’	Required
thresh	Require that many non-NA values.	int	Optional
subset	Labels along other axis to consider, e.g. if you are dropping rows these would be a list of columns to include.	array-like	Optional
inplace	If True, do operation inplace and return None.	bool Default Value: False	Required

Returns: DataFrame
DataFrame with NA entries dropped from it.

Example:

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