I'm trying to get the day of the week from a given date in pyspark could anyone help me ?
dt = dt.withColumn("week_day_number", date_format(col("TRANSACTION_DATE"), "u"))
I'm trying to get the day of the week from a given date ..
See here.
(Once you have a datetime instance just call weekday())
Monday is 0 and Sunday is 6
import datetime
print(datetime.datetime.today().weekday())
Related
I have a Deephaven DateTime in the New York (US-East) timezone and I'd like to get the year, month, and day (of the month) numbers from it as integers in Python.
Deephaven's time module has these utilities. You may have used it to create a Deephaven DateTime in the first place.
from deephaven import time as dhtu
timestamp = dhtu.to_datetime("2022-04-01T12:00:00 NY")
The following three methods will give you what you're looking for:
year - Gets the year
month_of_year - Gets the month
day_of_month - Gets the day of the month
All three methods will give you what you want based on the DateTime itself and your preferred time zone.
tz_ny = dhtu.TimeZone.NY
year = dhtu.year(timestamp, tz_ny)
month = dhtu.month_of_year(timestamp, tz_ny)
day = dhtu.day_of_month(timestamp, tz_ny)
I am taking start date as user input in the datetime format in python. Using the start date, I want to take end date as 11 months from start date.
start_date= month_dt
end_date =
Here, month_dt is taken in taken as user input in the datetime format, e.g. 2020-01-01 . How do I take end_date as 11 months ahead of the start date?
import datetime
from dateutil.relativedelta import relativedelta
print(datetime.date.today() - relativedelta(months=+11))
Current date reduced by 11 months
I'm trying to write a bit of code to check if a document has been updated this week, and if not to read in the data and update it. I need to be able to check if the last modified date/time of the document occurred in this week or not (Monday-Sunday).
I know this code gives me the last modified time of the file as a float of secconds since the epoch:
os.path.getmtime('path')
And I know I can use time.ctime to get that as a string date:
time.ctime(os.path.getmtime('path'))
But I'm not sure how to check if that date was in the current week. I also don't know if its easier to convert to a datetime object rather than ctime for this?
you can use datetime.isocalendar and compare the week attribute, basicallly
import os
from datetime import datetime
t_file = datetime.fromtimestamp(os.path.getmtime(filepath))
t_now = datetime.now()
print(t_file.isocalendar().week == t_now.isocalendar().week)
# or print(t_file.isocalendar()[1]== t_now.isocalendar()[1])
# to compare the year as well, use e.g.
print(t_file.isocalendar()[:2] == t_now.isocalendar()[:2])
The ISO year consists of 52 or 53 full weeks, and where a week starts on a Monday and ends on a Sunday. The first week of an ISO year is the first (Gregorian) calendar week of a year containing a Thursday. This is called week number 1, and the ISO year of that Thursday is the same as its Gregorian year.
This is for Python:
I need a library that is able to do arithmetic operations on dates while taking into account the duration of a month and or year.
For example, say I add a value of "1 day" to 3/31/2020, the result of should return:
1 + 3/31/2020 = 4/1/2020.
I also would need to be able to convert this to datetime format, and extract day, year and month.
Does a library like this exist?
import datetime
tday = datetime.date.today() # create today
print("Today:", tday)
""" create one week time duration """
oneWeek = datetime.timedelta(days=7)
""" create 1 day and 1440 minutes of time duraiton """
eightDays = datetime.timedelta(days=7, minutes=1440)
print("A week later than today:", tday + oneWeek) # print today +7 days
And the output to this code snippet is:
Today: 2020-03-25
A week later than today: 2020-04-01
>>>
As you see, it takes month overflows into account and turns March to April. datetime module has lots of things, I don't know all its attributes well and haven't used for a long time. However, I believe you can find nice documentation or tutorials on the web.
You definitely can create any specific date(there should be some constraints though) instead of today by supplying day, month and year info. I just don't remember how to do it.
This question already has answers here:
Getting the date of the first day of the week
(2 answers)
Python: give start and end of week data from a given date
(5 answers)
Closed 3 years ago.
I am trying to get the timestamp of monday at 00:00 of the current week in python. I know that for a specific date, the timestamp can be found using
baseTime = int(datetime.datetime.timestamp(datetime.datetime(2020,1,1)))
However, I want my program to automatically find out, based on the date, which date monday of the current week was, and then get the timestamp. That is to say, it would return different dates this week and next week, meaning different timestamps.
I know that the current date can be found using
import datetime
today = datetime.date.today()
Thanks in advance
I am trying to get the timestamp of monday at 00:00 of the current week in python
You could use timedelta method from datetime package.
from datetime import datetime, timedelta
now = datetime.now()
monday = now - timedelta(days = now.weekday())
print(monday)
Output
2020-01-27 08:47:01