what is enumerate code example

Example 1: what does enumerate do in python

The enumerate() function assigns an index to each item in an 
iterable object that can be used to reference the item later. 
What does enumerate do in Python? It makes it easier to keep 
track of the content of an iterable object.

Example 2: enumerate

categorical_features_new=[features for features in df.columns if df[features].dtypes=='object']
for feature in categorical_features_new:
    labels_sorted=df[feature].value_counts().sort_values().index
   
    labels_ordered={k:i for i,k in enumerate(labels_sorted,0)}
    
    df[feature]=df[feature].map(labels_ordered)