pandas check null values code example

Example 1: find nan value in dataframe python

# to mark NaN column as True
df['your column name'].isnull()

Example 2: python count null values in dataframe

# Count total missing values in a dataframe

df.isnull().sum().sum()

# Gives a integer value

Example 3: to detect if a data frame has nan values

df.isnull().sum().sum()
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