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Pandas: Series - count() function

Count null observations in Pandas series

The count() function is used to get number of non-NA/null observations in the Series.

Syntax:

Series.count(self, level=None)
Pandas Series count image

Parameters:

Name Description Type/Default Value Required / Optional
level If the axis is a MultiIndex (hierarchical), count along a particular level, collapsing into a smaller Series. int or level name
Default Value: None 		Required

Returns: int or Series (if level specified)
Number of non-null values in the Series.

Example:

Python-Pandas Code:

import numpy as np
import pandas as pd
s = pd.Series([0.0, 2.0, np.nan])
s.count()

Output:

2

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