pandas as categorical code example
Example 1: pandas categorical to numeric
dataset["sex"] = dataset["sex"].astype('category').cat.codes
Example 2: 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
Example 3: pandas categorical to numeric
dataset['Origin'] = dataset['Origin'].map({1: 'USA', 2: 'Europe', 3: 'Japan'})
Example 4: using df.astype to select categorical data and numerical data
df.satisfaction.astype("category",
ordered=True,
categories=ordered_satisfaction
)