Gemiddelde ritduur

W20529 maakte 291 ritten in onze gegevensset. Hoe lang duurden de ritten gemiddeld? We kunnen de ingebouwde Python-functies sum() en len() gebruiken om dit te berekenen.

Op basis van je vorige codeoefening is de data geladen als onebike_durations. Elk item is een aantal seconden dat de fiets uit het dock was.

Deze oefening maakt deel uit van de cursus

Werken met datums en tijden in Python

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Oefeninstructies

Bereken total_elapsed_time over alle ritten in onebike_durations.
Bereken number_of_trips voor onebike_durations.
Deel total_elapsed_time door number_of_trips om de gemiddelde ritduur te krijgen.

Praktische interactieve oefening

Probeer deze oefening eens door deze voorbeeldcode in te vullen.

# What was the total duration of all trips?
total_elapsed_time = ____(____)

# What was the total number of trips?
number_of_trips = ____(____)
  
# Divide the total duration by the number of trips
print(____ / ____)

Code bewerken en uitvoeren

Deze oefening maakt deel uit van de cursus

Werken met datums en tijden in Python

SkillTag.level.intermediateSkillTag.label

4.8+

Begin de cursus gratis

Hurricanes (also known as cyclones or typhoons) hit the U.S. state of Florida several times per year. To start off this course, you'll learn how to work with date objects in Python, starting with the dates of every hurricane to hit Florida since 1950. You'll learn how Python handles dates, common date operations, and the right way to format dates to avoid confusion.

Exercise 1: Dates in Python Exercise 2: Which day of the week?Exercise 3: How many hurricanes come early?Exercise 4: Math with dates Exercise 5: Subtracting dates Exercise 6: Counting events per calendar month Exercise 7: Putting a list of dates in order Exercise 8: Turning dates into strings Exercise 9: Printing dates in a friendly format Exercise 10: Representing dates in different ways

Bike sharing programs have swept through cities around the world -- and luckily for us, every trip gets recorded! Working with all of the comings and goings of one bike in Washington, D.C., you'll practice working with dates and times together. You'll parse dates and times from text, analyze peak trip times, calculate ride durations, and more.

Exercise 1: Datums en tijden Exercise 2: Datetimes handmatig maken Exercise 3: Gebeurtenissen tellen vóór en na de middag Exercise 4: Datetimes afdrukken en parseren Exercise 5: Strings omzetten naar datetimes Exercise 6: Parens van strings parsen als datetimes Exercise 7: ISO-indeling namaken met strftime()Exercise 8: Unix-timestamps Exercise 9: Werken met tijdsduren Exercise 10: Paren van datetimes omzetten naar duur Exercise 11: Gemiddelde ritduur

Huidige oefening

Exercise 12: De lange en de korte van waarom tijd lastig is

In this chapter, you'll learn to confidently tackle the time-related topic that causes people the most trouble: time zones and daylight saving. Continuing with our bike data, you'll learn how to compare clocks around the world, how to gracefully handle "spring forward" and "fall back," and how to get up-to-date timezone data from the dateutil library.

Exercise 1: UTC offsets Exercise 2: Creating timezone aware datetimes Exercise 3: Setting timezones Exercise 4: What time did the bike leave in UTC?Exercise 5: Time zone database Exercise 6: Putting the bike trips into the right time zone Exercise 7: What time did the bike leave? (Global edition)Exercise 8: Starting daylight saving time Exercise 9: How many hours elapsed around daylight saving?Exercise 10: March 29, throughout a decade Exercise 11: Ending daylight saving time Exercise 12: Finding ambiguous datetimes Exercise 13: Cleaning daylight saving data with fold

To conclude this course, you'll apply everything you've learned about working with dates and times in standard Python to working with dates and times in Pandas. With additional information about each bike ride, such as what station it started and stopped at and whether or not the rider had a yearly membership, you'll be able to dig much more deeply into the bike trip data. In this chapter, you'll cover powerful Pandas operations, such as grouping and plotting results by time.

Exercise 1: Reading date and time data in Pandas Exercise 2: Loading a csv file in Pandas Exercise 3: Making timedelta columns Exercise 4: Summarizing datetime data in Pandas Exercise 5: How many joyrides?Exercise 6: It's getting cold outside, W20529 Exercise 7: Members vs casual riders over time Exercise 8: Combining groupby() and resample()Exercise 9: Additional datetime methods in Pandas Exercise 10: Timezones in Pandas Exercise 11: How long per weekday?Exercise 12: How long between rides?Exercise 13: Wrap-up