Python Pandas - 返回已按降序排列的、经过排序的索引副本
要返回排序后的索引副本,可在 Pandas 中使用 index.sort_values() 方法。ascending 参数设置为 false。
首先,导入所需的库 –
import pandas as pd
创建 Pandas 索引 –
index = pd.Index([50, 10, 70, 95, 110, 90, 30])
显示 Pandas 索引 –
print("Pandas Index...\n",index)排序索引值。要按降序排列值,将“ascending”参数设置为“false” –
print("\nSort the index values in descending order...\n",index.sort_values(ascending=False))示例
以下为代码 –
import pandas as pd
# Creating Pandas index
index = pd.Index([50, 10, 70, 95, 110, 90, 30])
# Display the Pandas index
print("Pandas Index...\n",index)
# Return the number of elements in the Index
print("\nNumber of elements in the index...\n",index.size)
# Return the dtype of the data
print("\nThe dtype object...\n",index.dtype)
# Sort index values
# To sort values in Descending order, set the "ascending" parameter to "False"
print("\nSort the index values in descending order...\n",index.sort_values(ascending=False))
输出
这将产生以下输出 –
Pandas Index... Int64Index([50, 10, 70, 95, 110, 90, 30], dtype='int64') Number of elements in the index... 7 The dtype object... int64 Sort the index values in descending order... Int64Index([110, 95, 90, 70, 50, 30, 10], dtype='int64')
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