Python Pandas - 创建半开时间区间并检查端点是否存在
要创建一个半开时间区间,请使用 pandas.Interval() 并将 closed 参数设置为 left。要检查端点是否存在,请使用此 in 属性。
首先,导入所需的库 -
import pandas as pd
半开区间使用带有值 “left” 的 “closed” 参数设置。当 closed='left',半开区间 [0, 5) 由 0 <= x < 5 描述。
interval = pd.Interval(left=0, right=20, closed='left')
显示区间
print("Interval...\n",interval)
检查区间中元素是否存在。这表明 closed = left 仅包含最左侧的端点
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
以下为代码
import pandas as pd # Half-Open interval set using the "closed" parameter with value "left" # Half-open i.e. [0, 5) is described by 0 <= x < 5 when closed='left' interval = pd.Interval(left=0, right=20, closed='left') # 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 = left contain only the left-most endpoint 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
这将生成以下代码
Interval... [0, 20) Interval length... 20
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