find number of unique labels in dataframe code example
Example 1: count unique pandas
df['column'].nunique()
Example 2: return count of unique values pandas
#TO count repetition of each unique values(to find How many times the same-
# unique value is appearing in the data)
item_counts = df["Your_Column"].value_counts()
#Returns Dictionary => {"Value_name" : number_of_appearences}