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Python Dates and Times in Python (2014) Let's Build a Timed Quiz App Harder Time Machine

Why am I getting an invalid keyword argument?

I keep getting the error 'unit' is an invalid keyword argument. I'm missing something... but I don't know what. Please help.

time_machine.py
import datetime

starter = datetime.datetime(2015, 10, 21, 16, 29)

# Remember, you can't set "years" on a timedelta!
# Consider a year to be 365 days.

## Example
# time_machine(5, "minutes") => datetime(2015, 10, 21, 16, 34)
def time_machine(num, unit):
    if unit == 'years':
        span = datetime.timedelta(days = num * 365)
    else:
        span = datetime.timedelta(unit = num)
    return starter + span

Ginny,

You are giving the datetime.timedelta() method a keyword argument of the value of unit. That is not a valid keywords. 'days' is a valid keyword.

Ron

OK, I get it now. Thanks, Ron!

For further explanation, the datetime.timedelta function only accepts 'days', 'seconds', and 'microseconds' as keywords.

https://docs.python.org/2/library/datetime.html#datetime.timedelta

1 Answer

For further explanation, the datetime.timedelta function only accepts 'days', 'seconds', and 'microseconds' as keywords.

https://docs.python.org/2/library/datetime.html#datetime.timedelta