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# Python Pandas - Create an open time interval and check for existence of both the endpoints

To create an open time interval, use the **pandas.Interval()** and set the closed parameter to neither. To check for existence of both the endpoints, use the in property.

At first, import the required libraries −

import pandas as pd

Open interval set using the "closed" parameter with value "neither". An open interval (in mathematics denoted by square brackets) does not contains its endpoints, # i.e. the open interval [0, 5] is characterized by the conditions 0 < x < 5:

interval = pd.Interval(left=0, right=20, closed='neither')

Display the interval

print("Interval...\n",interval)

Check for the existence of an element in an Interval. This shows that closed = neither does not contain 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)

## Example

Following is the code

import pandas as pd # Open interval set using the "closed" parameter with value "neither" # An open interval (in mathematics denoted by square brackets) does not contains its endpoints, # i.e. the open interval [0, 5] is characterized by the conditions 0 < x < 5. interval = pd.Interval(left=0, right=20, closed='neither') # 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 = neither does not contain 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)

## Output

This will produce the following code

Interval... (0, 20) Interval length... 20

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