Necessary Pandas Function For Data Analysis

How to get unique values of a column


How to exclude columns with ‘object’ datatype from a pandas DataFrame.

new_df = df.select_dtypes(exclude=['object'])

How to get a list of columns of a certain datatype of a Pandas DataFrame. In this case, the datatype is ‘object’.

object_cols = [col for col in df.columns if df[col].dtype == "object"]

Get list of columns containing missing data and remove the columns from dataframe.

cols_with_missing = [col for col in df.columns if df[col].isnull().any()] 
df.drop(cols_with_missing, axis=1, inplace=True)

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