Python Pandas CategoricalIndex - 獲取此分類的類別
要獲取此分類的類別,請使用 Pandas 中 CategoricalIndex 的 categories 屬性。首先,匯入所需的庫 −
import pandas as pd
CategoricalIndex 只能取有限的,通常是固定的可能值(類別)。使用 "categories" 引數為分類設定類別。使用 "ordered" 引數將分類視為有序的 −
catIndex = pd.CategoricalIndex(["p", "q", "r", "s","p", "q", "r", "s"], ordered=True, categories=["p", "q", "r", "s"])
顯示分類索引 −
print("Categorical Index...\n",catIndex)
獲取類別 −
print("\nDisplaying Categories from CategoricalIndex...\n",catIndex.categories)範例
如下所示為程式碼 −
import pandas as pd
# CategoricalIndex can only take on a limited, and usually fixed, number of possible values
# Set the categories for the categorical using the "categories" parameter
# Treat the categorical as ordered using the "ordered" parameter
catIndex = pd.CategoricalIndex(["p", "q", "r", "s","p", "q", "r", "s"], ordered=True, categories=["p", "q", "r", "s"])
# Display the Categorical Index
print("Categorical Index...\n",catIndex)
# Get the categories
print("\nDisplaying Categories from CategoricalIndex...\n",catIndex.categories)輸出
將產生以下輸出 −
Categorical Index... CategoricalIndex(['p', 'q', 'r', 's', 'p', 'q', 'r', 's'], categories=['p', 'q', 'r', 's'], ordered=True, dtype='category') DisplayingCategories from CategoricalIndex... Index(['p', 'q', 'r', 's'], dtype='object')
廣告
資料結構
網路
RDBMS
作業系統
Java
iOS
HTML
CSS
安卓
Python
C 程式設計
C++
C#
MongoDB
MySQL
Javascript
PHP