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Sahar Nasiri
7,454 PointsDon't get the question well
I searched the fromtimestamp(), what I got is, it takes a number of seconds as a time and return the year, day,... of that time, do I get right?
1 Answer
Chris Freeman
Treehouse Moderator 68,423 PointsBoth datetime and date objects have a fromtimestamp() method that creates an object from a POSIX time value. POSIX time values are floats.
The challenge asks: Create a function named timestamp_oldest that takes any number of POSIX timestamp arguments. Return the oldest one as a datetime object. Remember, POSIX timestamps are floats and lists have a .sort() method.
Stepping through this challenge:
from datetime import datetime
# Create a function named timestamp_oldest
# that takes any number of POSIX timestamp arguments.
# Use *args to take an arbitrary number of arguments
def timestamp_oldest(*args):
# Return the oldest one as a datetime object.
# Remember, POSIX timestamps are floats and lists have a .sort() method.
# create a list from args
times = list(args)
# sort the list
times.sort()
# oldest time has lowest value
# create date time from oldest value, return it
return datetime.fromtimestamp(times[0])
Jordan Bester
4,752 PointsJordan Bester
4,752 Pointschris would you mind further explaining the Posix timestamps?
Chris Freeman
Treehouse Moderator 68,423 PointsChris Freeman
Treehouse Moderator 68,423 PointsA POSIX timestamp is a floating point number representing the number of seconds since epoch time (see time docs) – January, 1970 on many systems.