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法学Python Pandas - 创建闭区间并检查端点的存在
要创建闭区间，请使用 **pandas.Interval()** 并设置 closed 参数。要检查两个端点的存在，请使用 in 属性。
首先，导入所需的库：
import pandas as pd
使用值为“both”的“closed”参数设置闭区间。闭区间（在数学中用方括号表示）包含其端点，例如闭区间 [0, 5] 的特征是 0 <= x <= 5
interval = pd.Interval(left=0, right=20, closed='both')
显示区间
print("Interval...\n",interval)检查区间中是否存在元素。这表明 closed = both 包含其端点
print("\nThe left-most element exists in the Interval? = \n",0 in interval)
print("\nThe right-most element exists in the Interval? = \n",20 in interval)示例
以下是代码：
import pandas as pd
# Closed interval set using the "closed" parameter with value "both"
# A closed interval (in mathematics denoted by square brackets) contains its endpoints,
# i.e. the closed interval [0, 5] is characterized by the conditions 0 <= x <= 5.
interval = pd.Interval(left=0, right=20, closed='both')
# display the interval
print("Interval...\n",interval)
# display the interval length
print("\nInterval length...\n",interval.length)
# check for the existence of an element in an Interval
# This shows that closed = both contains its endpoints
print("\nThe left-most element exists in the Interval? = \n",0 in interval)
print("\nThe right-most element exists in the Interval? = \n",20 in interval)输出
这将产生以下代码：
Interval... [0, 20] Interval length... 20
更新于：2021年10月20日
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