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# Python Pandas - Create a closed time interval and check for existence of both the endpoints

To create a closed time interval, use the **pandas.Interval()** and set the closed parameter. To check for existence of both the endpoints, use the in property.

At first, import the required libraries −

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)

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)

## Example

Following is the code

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)

## Output

This will produce the following code

Interval... [0, 20] Interval length... 20

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