How do I Plot the Duration between two Dates in Python?

Question

I'm working with the following DataFrame:

First Bill Date Last Bill Date  Duration
0   2020-06-22  2021-01-06  0 Years 6 Months 14 Days
1   2020-07-06  2020-12-04  0 Years 4 Months 29 Days
2   2020-06-06  2020-10-01  0 Years 3 Months 25 Days
3   2020-07-21  2020-07-21  0 Years 0 Months 0 Days
4   2020-07-03  2020-09-16  0 Years 2 Months 13 Days

where First Bill Date and Last Bill Date are of type TIMESTAMP

, and Duration (type str ) is the difference between the First Bill Date and Last Bill Date

Duration is calculated from the following function:

def date_difference(d1, d2):
    d1 = d1.strftime("%Y-%m-%d")
    d2 = d2.strftime("%Y-%m-%d")
    d1 = datetime.strptime(d1, "%Y-%m-%d")
    d2 = datetime.strptime(d2, "%Y-%m-%d")
    
    difference = relativedelta.relativedelta(d1, d2)

    years = difference.years
    months = difference.months
    days = difference.days
    
    return f'{abs(years)} Years {abs(months)} Months {abs(days)} Days'

Is there a way to plot Duration using any visualization package?

Please Advise.

Answer 1

If you transform the duration into an integers of days, then it should be straight forward to plot it. So you could change your function to the following

def date_difference(d1, d2):
    return (d2-d1).days

and then plot with df['Duration'].plot()

EDIT: I am assuming that d2 is the later date, if that is not the case then you should reverse the ordering of course