Python Pandas – 如果索引是单调递减的（仅相等或递减的值），就返回它

要返回索引是否是单调递减（仅相等或递减的值），请使用 index.is_monotonic_decreasing 属性。

首先，导入所需的库 –

import pandas as pd

创建索引 –

index = pd.Index([50, 40, 30, 30, 30])

显示索引 –

print("Pandas Index...\n",index)

检查索引是否单调递减 –

print("\nIs the Pandas index monotonic decreasing?\n",index.is_monotonic_decreasing)

示例

以下是代码 –

import pandas as pd

# Creating the index
index = pd.Index([50, 40, 30, 30, 30])

# Display the index
print("Pandas Index...\n",index)

# Return an array representing the data in the Index
print("\nArray...\n",index.values)

# Check if the index monotonic decreasing
print("\nIs the Pandas index monotonic decreasing?\n",index.is_monotonic_decreasing)

输出

这将产生以下代码 –

Pandas Index...
Int64Index([50, 40, 30, 30, 30], dtype='int64')

Array...
[50 40 30 30 30]

Is the Pandas index monotonic decreasing?
True