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Arithmetic Operations with timedelta Objects

We can perform different arithmetic operations for multiple timedelta objects. For example, we can add, subtract, divide, find the whole part of division... What's the sense?

For example, we can calculate the whole number of weeks between two dates. Let's use the same example as before: we can calculate the whole number of weeks since the COVID-19 became a pandemic (declared by WHO). There are two ways to solve this task:

Extract the number of days (by using .days) and then find the whole part of division by 7.
Find the whole part of the division of two timedelta objects.


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# Load classes from library
from datetime import date
from datetime import timedelta

# Create two date objects
pandemic = date(2020, 3, 11)
today = date.today()

# Calculate difference between dates
diff = today - pandemic

# Count whole number of weeks: method 1
print(diff.days//7, "weeks passed since COVID-19 became pandemic")

# Count whole number of weeks: method 2
print(diff//timedelta(weeks = 1), "weeks passed since COVID-19 became pandemic")

See: in the first method, we extracted the number of days and calculated the whole part of the division by 7. In the second method, we divided by timedelta object with 1 week as an argument.

Compito

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For the same two date objects as before (date1 and date2 with dates "14 January 2016" and "07 April 2019" respectively) calculate the whole number of weeks between these dates (the initial difference is saved in date_diff). Use both methods described in the example.

Soluzione

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Sezione 1. Capitolo 8

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Arithmetic Operations with timedelta Objects

We can perform different arithmetic operations for multiple timedelta objects. For example, we can add, subtract, divide, find the whole part of division... What's the sense?

Extract the number of days (by using .days) and then find the whole part of division by 7.
Find the whole part of the division of two timedelta objects.


              12345678910111213141516
            
# Load classes from library
from datetime import date
from datetime import timedelta

# Create two date objects
pandemic = date(2020, 3, 11)
today = date.today()

# Calculate difference between dates
diff = today - pandemic

# Count whole number of weeks: method 1
print(diff.days//7, "weeks passed since COVID-19 became pandemic")

# Count whole number of weeks: method 2
print(diff//timedelta(weeks = 1), "weeks passed since COVID-19 became pandemic")

See: in the first method, we extracted the number of days and calculated the whole part of the division by 7. In the second method, we divided by timedelta object with 1 week as an argument.

Compito

Swipe to start coding

Soluzione

Cambia al desktop per esercitarti nel mondo realeContinua da dove ti trovi utilizzando una delle opzioni seguenti

Tutto è chiaro?

Grazie per i tuoi commenti!

Sezione 1. Capitolo 8

Cambia al desktop per esercitarti nel mondo realeContinua da dove ti trovi utilizzando una delle opzioni seguenti