Answers for "create categorical dataframe from pandas using np.object"

2

display all categorical column in pandas dataframe

# get all categorical columns in the dataframe
catCols = [col for col in df.columns if df[col].dtype=="O"]
Posted by: Guest on May-30-2021
1

using df.astype to select categorical data and numerical data

df = pd.DataFrame({'vertebrates': ['Bird', 'Bird', 'Mammal', 'Fish', 'Amphibian', 'Reptile', 'Mammal']})

df.vertebrates.astype("category").cat.codes
Posted by: Guest on June-01-2020

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