dataframe find nan values code example

Example 1: find position of nan pandas

# position of NaN values in terms of index
df.loc[pandas.isna(df["b"]), :].index

# position of NaN values in terms of rows that cotnain NaN
df.loc[pandas.isna(df["b"]), :]

Example 2: find nan value in dataframe python

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

Example 3: python data frame check if any nan value present

df['your column name'].isnull().values.any()

Example 4: pandas nan values in column

df['your column name'].isnull()