Python - Sort Lines in File by Regex Date Match - python

I have a file (based on a class project) of scraped Tweets. At this point lines in the file look like:
#soandso something something Permalink 1:40 PM - 17 Feb 2016<br><br>
#soandso something something Permalink 1:32 PM - 16 Feb 2016<br><br>
I'm trying to sort the lines in the file by date. This is what I've cobbled together so far.
import re
from datetime import datetime
when = re.compile(r".+</a>(.+)<br><br>")
with open('tweets.txt','r+') as outfile:
sortme = outfile.read()
for match in re.finditer(when, sortme):
tweet = match.group(0)
when = match.group(1)
when = datetime.strptime(when, " %I:%M %p - %d %b %Y")
print when
Which will print out all the dates in the lines having converted the format
from 1:40 PM - 17 Feb 2016 to 2016-02-17 13:40:00, which I believe is a datetime. I have searched high and low over the last few days for clues about how I'd then sort all the lines in the file by datetime. Thanks for your help!

I have searched high and low over the last few days for clues about how I'd then sort all the lines in the file by datetime.
def get_time(line):
match = re.search(r"</a>\s*(.+?)\s*<br><br>", line)
if match:
return datetime.strptime(match.group(1), "%I:%M %p - %d %b %Y")
return datetime.min
lines.sort(key=get_time)
It assumes that the time is monotonous in the given time period (e.g., no DST transitions) otherwise you should convert the input time to UTC (or POSIX timestamp) first.

It seems you have already solved the regex problem... so to convert your datetime into a measurable quantity convert to seconds like so:
import time
time.mktime(when.timetuple())
then for sorting you can make a lot off different routes. the simplest example is:
import operator
s = [("ab",50),("cd",100),("ef",15)]
print sorted(s,key=operator.itemgetter(1))
## [('ef', 15), ('ab', 50), ('cd', 100)]

Related

How to efficiently parse Time/Date string into datetime object?

I'm scraping data from a news site and want to store the time and date these articles were posted. The good thing is that I can pull these timestamps right from the page of the articles.
When the articles I scrape were posted today, the output looks like this:
17:22 ET
02:41 ET
06:14 ET
When the articles were posted earlier than today, the output looks like this:
Mar 10, 2021, 16:05 ET
Mar 08, 2021, 08:00 ET
Feb 26, 2021, 11:23 ET
Current problem: I can't order my database by the time the articles were posted, because whenever I run the program, articles that were posted today are stored only with a time. Over multiple days, this will create a lot of articles with a stamp that looks as if they were posted on the day you look at the database - since there is only a time.
What I want: Add the current month/day/year in front of the time stamp on the basis of the already given format.
My idea: I have a hard time to understand how regex works. My idea would be to check the length of the imported string. If it is exactly 8, I want to add the Month, Date and Year in front. But I don't know whether this is a) the most efficient approach and b) most importantly, how to code this seemingly easy idea.
I would glady appreciate if someone can help me how to code this. The current line which grabs the time looks like this:
article_time = item.select_one('h3 small').text
Try this out and others can correct me if I overlooked something,
from datetime import datetime, timedelta
def get_datetime_from_time(time):
time, timezone = time.rsplit(' ', 1)
if ',' in time:
article_time = datetime.strptime(time, r"%b %d, %Y, %H:%M")
else:
article_time = datetime.strptime(time, r"%H:%M")
hour, minute = article_time.hour, article_time.minute
if timezone == 'ET':
hours = -4
else:
hours = -5
article_time = (datetime.utcnow() + timedelta(hours=hours)).replace(hour=hour, minute=minute) # Adjust for timezone
return article_time
article_time = item.select_one('h3 small').text
article_time = get_datetime_from_time(article_time)
What I'm doing here is I'm checking if a comma is in your time string. If it is, then it's with date, else it's without. Then I'm checking for timezone since Daylight time is different than Standard time. So I have a statement to adjust timezone by 4 or 5. Then I'm getting the UTC time (regardless of your timezone) and adjust for timezone. strptime is a function that parses time depending on a format you give it.
Note that this does not take into account an empty time string.
Handling timezones properly can get fairly involved since the standard library barely supports them (and recommends using the third-party pytz module) to do so). This would be especially true if you need it
So, one "quick and dirty" way to deal with them would be to just ignore that information and add the current day, month, and year to any timestamps encountered that don't include that. The code below demonstrates how to do that.
from datetime import datetime
scrapped = '''
17:22 ET
02:41 ET
06:14 ET
Mar 10, 2021, 16:05 ET
Mar 08, 2021, 08:00 ET
Feb 26, 2021, 11:23 ET
'''
def get_datetime(string):
string = string[:-3] # Remove timezone.
try:
r = datetime.strptime(string, "%b %d, %Y, %H:%M")
except ValueError:
try:
today = datetime.today()
daytime = datetime.strptime(string, "%H:%M")
r = today.replace(hour=daytime.hour, minute=daytime.minute, second=0, microsecond=0)
except ValueError:
r = None
return r
for line in scrapped.splitlines():
if line:
r = get_datetime(line)
print(f'{line=}, {r=}')
"I can't order my database" - to be able to do so, you'll either have to convert the strings to datetime objects or to an ordered format (low to high resolution, so year-month-day- etc.) which would allow you to sort strings correctly.
"I have a hard time to understand how regex works" - while you can use regular expressions here to somehow parse and modify the strings you have, you don't need to.
#1 If you want a convenient option that leaves you with datetime objects, here's one using dateutil:
import dateutil
times = ["17:22 ET", "02:41 ET", "06:14 ET",
"Mar 10, 2021, 16:05 ET", "Mar 08, 2021, 08:00 ET", "Feb 26, 2021, 11:23 ET"]
tzmapping = {'ET': dateutil.tz.gettz('US/Eastern')}
for t in times:
print(f"{t:>22} -> {dateutil.parser.parse(t, tzinfos=tzmapping)}")
17:22 ET -> 2021-03-13 17:22:00-05:00
02:41 ET -> 2021-03-13 02:41:00-05:00
06:14 ET -> 2021-03-13 06:14:00-05:00
Mar 10, 2021, 16:05 ET -> 2021-03-10 16:05:00-05:00
Mar 08, 2021, 08:00 ET -> 2021-03-08 08:00:00-05:00
Feb 26, 2021, 11:23 ET -> 2021-02-26 11:23:00-05:00
Note that you can easily tell dateutil's parser to use a certain time zone (e.g. to convert 'ET' to US/Eastern) and it also automatically adds today's date if the date is not present in the input.
#2 If you want to do more of the parsing yourself (probably more efficient), you can do so by extracting the time zone first, then parsing the rest and adding a date where needed:
from datetime import datetime
from zoneinfo import ZoneInfo # Python < 3.9: you can use backports.zoneinfo
# add more if you not only have ET...
tzmapping = {'ET': ZoneInfo('US/Eastern')}
# get tuples of the input string with tz stripped off and timezone object
times_zones = [(t[:t.rfind(' ')], tzmapping[t.split(' ')[-1]]) for t in times]
# parse to datetime
dt = []
for t, z in times_zones:
if len(t)>5: # time and date...
dt.append(datetime.strptime(t, '%b %d, %Y, %H:%M').replace(tzinfo=z))
else: # time only...
dt.append(datetime.combine(datetime.now(z).date(),
datetime.strptime(t, '%H:%M').time()).replace(tzinfo=z))
for t, dtobj in zip(times, dt):
print(f"{t:>22} -> {dtobj}")

How to compare date in python? I have a month date year format and want to compare to the current date (within 7 days)

This is the data that is being returned from my API:
"Jun 02, 2021, 2 PMEST"
If I'm within 7 days of the current date which I'm getting by doing this:
from datetime import date
today = date.today()
print("Today's date:", today)
Just need to convert Jun to a number and 02 and compare to see if it's within 7 days in the future of the current date, then return True
APPROACH 0:
Given the format of your example data, you should be able to convert it to a datetime using this code:
datetime.strptime("Jun 02, 2021, 2 PMEST", "%b %d, %Y, %I %p%Z")
The details about this format string are here: https://docs.python.org/3/library/datetime.html#strftime-strptime-behavior
However, when I tested this locally, it worked for this input:
"Jun 02, 2021, 2 PMUTC"
but not for your input (which has different timezone):
"Jun 02, 2021, 2 PMEST"
I have investigated this some more and "read the docs" (https://docs.python.org/3/library/time.html).
To get EST parsing to work, you would have to change your OS timezone and reset the time module's timezones like this:
from datetime import datetime
import os
import time
os.environ["TZ"] = "US/Eastern". # change timezone
time.tzset(). # reset time.tzname tuple
datetime.strptime("Jun 02, 2021, 2 PMEST", "%b %d, %Y, %I %p%Z")
When you're done, be safe and delete the "hacked" environment variable:
del os.environ["TZ"]
Note - Since your system timezone is presumably still UTC, it can still parse UTC timezone too.
See this thread for detailed discussion: https://bugs.python.org/issue22377
Also note that the timestamp is not actually captured. The result you get with EST and UTC is a naive datetime object.
APPROACH 1
So, it seems like there is a better way to approach this.
First, you need to pip install dateutils if you don't already have it.
THen do something like this:
from dateutil import parser
from dateutil.tz import gettz
tzinfos = {"EST": gettz("US/Eastern")}
my_datetime = parser.parse("Jun 02, 2021, 2 PM EST", tzinfos=tzinfos)
What's happening here is we use gettz to get timezone information from the timezones listed in usr/share/zoneinfo. Then the parse function can (fuzzy) parse your string (no format needs to be specified!) and returns my_datetime which has timezone information on it. Here are the parser docs: https://dateutil.readthedocs.io/en/stable/parser.html
I don't know how many different timezones you need to deal with so the rest is up to you. Good luck.
Convert the date to a datetime structure and take the direct difference. Note that today must be a datetime, too.
import datetime
date_string = "Jun 02, 2021, 2 PMEST"
today = datetime.datetime.today()
date = datetime.datetime.strptime(date_string,
"%b %d, %Y, %I %p%Z") # Corrected
(date - today).days
#340

Date/Time formatting

I'm creating a python script that will display busy, no-answer and failed calls for a specific date but I'm stuck on the formatting of the date that's displayed. The start_time and end_time "variables" from Twilio print something like this: "Mon, 25 Jul 2016 16:03:53 +0000". I want to get rid of the day name and the comma since I'm saving the results into a csv file (script_name.py > some_file.csv) and the comma after the day name kind of screws up the csv structure.
In the settings.py file the time_zone variable is set to the right one (America/Chicago) and the USE_TZ variable is set to true. But anyway the output is still in UTC.
I don't know anything about Python and the things I've tried to parse call.start_time to a datetime have failed . . . I would know how to do it if it was a given value like start_time = '2016-07-26', but I don't know how to do it when the value comes from for call in client.calls.list . . .
Any guidance will be greatly appreciated!
Thanks!
from twilio.rest import TwilioRestClient
from datetime import datetime
from pytz import timezone
from dateutil import tz
# To find these visit https://www.twilio.com/user/account
account_sid = "**********************************"
auth_token = "**********************************"
client = TwilioRestClient(account_sid, auth_token)
for call in client.calls.list(
start_time="2016-07-25",
end_time="2016-07-25",
status='failed',
):
print(datetime.datetime.strptime(call.start_time, "%Y-%m-%d %H:%M:%S"))
The code I've provided does simple date and time format.
from datetime import datetime
from time import sleep
print('The Time is shown below!')
while True:
time = str(datetime.now())
time = list(time)
for i in range(10):
time.pop(len(time)-1)
time = ('').join(time)
time = time.split()
date = time[0]
time = time[1]
print('Time: '+time+', Date: '+date, end='\r')
sleep(1)
However if you looking just to format "Mon, 25 Jul 2016 16:03:53 +0000" as you said and just remove the day consider something like this:
day = "Mon, 25 Jul 2016 16:03:53 +0000"
# Convert to an array
day = list(day)
# Remove first 5 characters
for i in range(5):
day.pop(0)
day = ('').join(day)
print(day)
# You can use if statements to determine which day it is to decide how many characters to remove.
>>> "25 Jul 2016 16:03:53 +0000"
The format you need to parse is dictated by the timestamp provided by Twillo. You will likely need the following format string to properly parse the timestamp:
print(datetime.datetime.strptime(call.start_time, "%a, %d %b %Y %H:%M:%S %z"))
A great guide for the formatting string is http://strftime.org/.
Another good library for lazily converting dates from strings is the python-dateutil library found at https://dateutil.readthedocs.io/.

Python - Time delta from string and now()

I have spent some time trying to figure out how to get a time delta between time values. The only issue is that one of the times was stored in a file. So I have one string which is in essence str(datetime.datetime.now()) and datetime.datetime.now().
Specifically, I am having issues getting a delta because one of the objects is a datetime object and the other is a string.
I think the answer is that I need to get the string back in a datetime object for the delta to work.
I have looked at some of the other Stack Overflow questions relating to this including the following:
Python - Date & Time Comparison using timestamps, timedelta
Comparing a time delta in python
Convert string into datetime.time object
Converting string into datetime
Example code is as follows:
f = open('date.txt', 'r+')
line = f.readline()
date = line[:26]
now = datetime.datetime.now()
then = time.strptime(date)
delta = now - then # This does not work
Can anyone tell me where I am going wrong?
For reference, the first 26 characters are acquired from the first line of the file because this is how I am storing time e.g.
f.write(str(datetime.datetime.now())
Which would write the following:
2014-01-05 13:09:42.348000
time.strptime returns a struct_time.
datetime.datetime.now() returns a datetime object.
The two can not be subtracted directly.
Instead of time.strptime you could use datetime.datetime.strptime, which returns a datetime object. Then you could subtract now and then.
For example,
import datetime as DT
now = DT.datetime.now()
then = DT.datetime.strptime('2014-1-2', '%Y-%m-%d')
delta = now - then
print(delta)
# 3 days, 8:17:14.428035
By the way, you need to supply a date format string to time.strptime or DT.datetime.strptime.
time.strptime(date)
should have raised a ValueError.
It looks like your date string is 26 characters long. That might mean you have a date string like 'Fri, 10 Jun 2011 11:04:17 '.
If that is true, you may want to parse it like this:
then = DT.datetime.strptime('Fri, 10 Jun 2011 11:04:17 '.strip(), "%a, %d %b %Y %H:%M:%S")
print(then)
# 2011-06-10 11:04:17
There is a table describing the available directives (like %Y, %m, etc.) here.
Try this:
import time
import datetime
d = datetime.datetime.now()
now = time.mktime(d.timetuple())
And then apply the delta
if you have the year,month,day of 'then' you may use:
year = 2013
month = 1
day = 1
now_date = datetime.datetime.now()
then_date = now_date.replace(year = year, month = month, day = day)
delta = now_date - then_date

How to print a date in a regular format?

This is my code:
import datetime
today = datetime.date.today()
print(today)
This prints: 2008-11-22 which is exactly what I want.
But, I have a list I'm appending this to and then suddenly everything goes "wonky". Here is the code:
import datetime
mylist = []
today = datetime.date.today()
mylist.append(today)
print(mylist)
This prints the following:
[datetime.date(2008, 11, 22)]
How can I get just a simple date like 2008-11-22?
The WHY: dates are objects
In Python, dates are objects. Therefore, when you manipulate them, you manipulate objects, not strings or timestamps.
Any object in Python has TWO string representations:
The regular representation that is used by print can be get using the str() function. It is most of the time the most common human readable format and is used to ease display. So str(datetime.datetime(2008, 11, 22, 19, 53, 42)) gives you '2008-11-22 19:53:42'.
The alternative representation that is used to represent the object nature (as a data). It can be get using the repr() function and is handy to know what kind of data your manipulating while you are developing or debugging. repr(datetime.datetime(2008, 11, 22, 19, 53, 42)) gives you 'datetime.datetime(2008, 11, 22, 19, 53, 42)'.
What happened is that when you have printed the date using print, it used str() so you could see a nice date string. But when you have printed mylist, you have printed a list of objects and Python tried to represent the set of data, using repr().
The How: what do you want to do with that?
Well, when you manipulate dates, keep using the date objects all long the way. They got thousand of useful methods and most of the Python API expect dates to be objects.
When you want to display them, just use str(). In Python, the good practice is to explicitly cast everything. So just when it's time to print, get a string representation of your date using str(date).
One last thing. When you tried to print the dates, you printed mylist. If you want to print a date, you must print the date objects, not their container (the list).
E.G, you want to print all the date in a list :
for date in mylist :
print str(date)
Note that in that specific case, you can even omit str() because print will use it for you. But it should not become a habit :-)
Practical case, using your code
import datetime
mylist = []
today = datetime.date.today()
mylist.append(today)
print mylist[0] # print the date object, not the container ;-)
2008-11-22
# It's better to always use str() because :
print "This is a new day : ", mylist[0] # will work
>>> This is a new day : 2008-11-22
print "This is a new day : " + mylist[0] # will crash
>>> cannot concatenate 'str' and 'datetime.date' objects
print "This is a new day : " + str(mylist[0])
>>> This is a new day : 2008-11-22
Advanced date formatting
Dates have a default representation, but you may want to print them in a specific format. In that case, you can get a custom string representation using the strftime() method.
strftime() expects a string pattern explaining how you want to format your date.
E.G :
print today.strftime('We are the %d, %b %Y')
>>> 'We are the 22, Nov 2008'
All the letter after a "%" represent a format for something:
%d is the day number (2 digits, prefixed with leading zero's if necessary)
%m is the month number (2 digits, prefixed with leading zero's if necessary)
%b is the month abbreviation (3 letters)
%B is the month name in full (letters)
%y is the year number abbreviated (last 2 digits)
%Y is the year number full (4 digits)
etc.
Have a look at the official documentation, or McCutchen's quick reference you can't know them all.
Since PEP3101, every object can have its own format used automatically by the method format of any string. In the case of the datetime, the format is the same used in
strftime. So you can do the same as above like this:
print "We are the {:%d, %b %Y}".format(today)
>>> 'We are the 22, Nov 2008'
The advantage of this form is that you can also convert other objects at the same time.
With the introduction of Formatted string literals (since Python 3.6, 2016-12-23) this can be written as
import datetime
f"{datetime.datetime.now():%Y-%m-%d}"
>>> '2017-06-15'
Localization
Dates can automatically adapt to the local language and culture if you use them the right way, but it's a bit complicated. Maybe for another question on SO(Stack Overflow) ;-)
import datetime
print datetime.datetime.now().strftime("%Y-%m-%d %H:%M")
Edit:
After Cees' suggestion, I have started using time as well:
import time
print time.strftime("%Y-%m-%d %H:%M")
The date, datetime, and time objects all support a strftime(format) method,
to create a string representing the time under the control of an explicit format
string.
Here is a list of the format codes with their directive and meaning.
%a Locale’s abbreviated weekday name.
%A Locale’s full weekday name.
%b Locale’s abbreviated month name.
%B Locale’s full month name.
%c Locale’s appropriate date and time representation.
%d Day of the month as a decimal number [01,31].
%f Microsecond as a decimal number [0,999999], zero-padded on the left
%H Hour (24-hour clock) as a decimal number [00,23].
%I Hour (12-hour clock) as a decimal number [01,12].
%j Day of the year as a decimal number [001,366].
%m Month as a decimal number [01,12].
%M Minute as a decimal number [00,59].
%p Locale’s equivalent of either AM or PM.
%S Second as a decimal number [00,61].
%U Week number of the year (Sunday as the first day of the week)
%w Weekday as a decimal number [0(Sunday),6].
%W Week number of the year (Monday as the first day of the week)
%x Locale’s appropriate date representation.
%X Locale’s appropriate time representation.
%y Year without century as a decimal number [00,99].
%Y Year with century as a decimal number.
%z UTC offset in the form +HHMM or -HHMM.
%Z Time zone name (empty string if the object is naive).
%% A literal '%' character.
This is what we can do with the datetime and time modules in Python
import time
import datetime
print "Time in seconds since the epoch: %s" %time.time()
print "Current date and time: ", datetime.datetime.now()
print "Or like this: ", datetime.datetime.now().strftime("%y-%m-%d-%H-%M")
print "Current year: ", datetime.date.today().strftime("%Y")
print "Month of year: ", datetime.date.today().strftime("%B")
print "Week number of the year: ", datetime.date.today().strftime("%W")
print "Weekday of the week: ", datetime.date.today().strftime("%w")
print "Day of year: ", datetime.date.today().strftime("%j")
print "Day of the month : ", datetime.date.today().strftime("%d")
print "Day of week: ", datetime.date.today().strftime("%A")
That will print out something like this:
Time in seconds since the epoch: 1349271346.46
Current date and time: 2012-10-03 15:35:46.461491
Or like this: 12-10-03-15-35
Current year: 2012
Month of year: October
Week number of the year: 40
Weekday of the week: 3
Day of year: 277
Day of the month : 03
Day of week: Wednesday
Use date.strftime. The formatting arguments are described in the documentation.
This one is what you wanted:
some_date.strftime('%Y-%m-%d')
This one takes Locale into account. (do this)
some_date.strftime('%c')
This is shorter:
>>> import time
>>> time.strftime("%Y-%m-%d %H:%M")
'2013-11-19 09:38'
# convert date time to regular format.
d_date = datetime.datetime.now()
reg_format_date = d_date.strftime("%Y-%m-%d %I:%M:%S %p")
print(reg_format_date)
# some other date formats.
reg_format_date = d_date.strftime("%d %B %Y %I:%M:%S %p")
print(reg_format_date)
reg_format_date = d_date.strftime("%Y-%m-%d %H:%M:%S")
print(reg_format_date)
OUTPUT
2016-10-06 01:21:34 PM
06 October 2016 01:21:34 PM
2016-10-06 13:21:34
Or even
from datetime import datetime, date
"{:%d.%m.%Y}".format(datetime.now())
Out: '25.12.2013
or
"{} - {:%d.%m.%Y}".format("Today", datetime.now())
Out: 'Today - 25.12.2013'
"{:%A}".format(date.today())
Out: 'Wednesday'
'{}__{:%Y.%m.%d__%H-%M}.log'.format(__name__, datetime.now())
Out: '__main____2014.06.09__16-56.log'
Simple answer -
datetime.date.today().isoformat()
With type-specific datetime string formatting (see nk9's answer using str.format().) in a Formatted string literal (since Python 3.6, 2016-12-23):
>>> import datetime
>>> f"{datetime.datetime.now():%Y-%m-%d}"
'2017-06-15'
The date/time format directives are not documented as part of the Format String Syntax but rather in date, datetime, and time's strftime() documentation. The are based on the 1989 C Standard, but include some ISO 8601 directives since Python 3.6.
I hate the idea of importing too many modules for convenience. I would rather work with available module which in this case is datetime rather than calling a new module time.
>>> a = datetime.datetime(2015, 04, 01, 11, 23, 22)
>>> a.strftime('%Y-%m-%d %H:%M')
'2015-04-01 11:23'
You need to convert the datetime object to a str.
The following code worked for me:
import datetime
collection = []
dateTimeString = str(datetime.date.today())
collection.append(dateTimeString)
print(collection)
Let me know if you need any more help.
In Python you can format a datetime using the strftime() method from the date, time and datetime classes in the datetime module.
In your specific case, you are using the date class from datetime. You can use the following snippet to format the today variable into a string with the format yyyy-MM-dd:
import datetime
today = datetime.date.today()
print("formatted datetime: %s" % today.strftime("%Y-%m-%d"))
In the following a more complete example:
import datetime
today = datetime.date.today()
# datetime in d/m/Y H:M:S format
date_time = today.strftime("%d/%m/%Y, %H:%M:%S")
print("datetime: %s" % date_time)
# datetime in Y-m-d H:M:S format
date_time = today.strftime("%Y-%m-%d, %H:%M:%S")
print("datetime: %s" % date_time)
# format date
date = today.strftime("%d/%m/%Y")
print("date: %s" % time)
# format time
time = today.strftime("%H:%M:%S")
print("time: %s" % time)
# day
day = today.strftime("%d")
print("day: %s" % day)
# month
month = today.strftime("%m")
print("month: %s" % month)
# year
year = today.strftime("%Y")
print("year: %s" % year)
More directives:
Sources:
Format DateTime in Python
strftime
You can do:
mylist.append(str(today))
Considering the fact you asked for something simple to do what you wanted, you could just:
import datetime
str(datetime.date.today())
For those wanting locale-based date and not including time, use:
>>> some_date.strftime('%x')
07/11/2019
Since the print today returns what you want this means that the today object's __str__ function returns the string you are looking for.
So you can do mylist.append(today.__str__()) as well.
from datetime import date
def today_in_str_format():
return str(date.today())
print (today_in_str_format())
This will print 2018-06-23 if that's what you want :)
You may want to append it as a string?
import datetime
mylist = []
today = str(datetime.date.today())
mylist.append(today)
print(mylist)
For pandas.Timestamps, strftime() can be used e.g.:
utc_now = datetime.now()
For isoformat:
utc_now.isoformat()
For any format e.g.:
utc_now.strftime("%m/%d/%Y, %H:%M:%S")
You can use easy_date to make it easy:
import date_converter
my_date = date_converter.date_to_string(today, '%Y-%m-%d')
A quick disclaimer for my answer - I've only been learning Python for about 2 weeks, so I am by no means an expert; therefore, my explanation may not be the best and I may use incorrect terminology. Anyway, here it goes.
I noticed in your code that when you declared your variable today = datetime.date.today() you chose to name your variable with the name of a built-in function.
When your next line of code mylist.append(today) appended your list, it appended the entire string datetime.date.today(), which you had previously set as the value of your today variable, rather than just appending today().
A simple solution, albeit maybe not one most coders would use when working with the datetime module, is to change the name of your variable.
Here's what I tried:
import datetime
mylist = []
present = datetime.date.today()
mylist.append(present)
print present
and it prints yyyy-mm-dd.
Here is how to display the date as (year/month/day) :
from datetime import datetime
now = datetime.now()
print '%s/%s/%s' % (now.year, now.month, now.day)
import datetime
import time
months = ["Unknown","January","Febuary","Marchh","April","May","June","July","August","September","October","November","December"]
datetimeWrite = (time.strftime("%d-%m-%Y "))
date = time.strftime("%d")
month= time.strftime("%m")
choices = {'01': 'Jan', '02':'Feb','03':'Mar','04':'Apr','05':'May','06': 'Jun','07':'Jul','08':'Aug','09':'Sep','10':'Oct','11':'Nov','12':'Dec'}
result = choices.get(month, 'default')
year = time.strftime("%Y")
Date = date+"-"+result+"-"+year
print Date
In this way you can get Date formatted like this example: 22-Jun-2017
I don't fully understand but, can use pandas for getting times in right format:
>>> import pandas as pd
>>> pd.to_datetime('now')
Timestamp('2018-10-07 06:03:30')
>>> print(pd.to_datetime('now'))
2018-10-07 06:03:47
>>> pd.to_datetime('now').date()
datetime.date(2018, 10, 7)
>>> print(pd.to_datetime('now').date())
2018-10-07
>>>
And:
>>> l=[]
>>> l.append(pd.to_datetime('now').date())
>>> l
[datetime.date(2018, 10, 7)]
>>> map(str,l)
<map object at 0x0000005F67CCDF98>
>>> list(map(str,l))
['2018-10-07']
But it's storing strings but easy to convert:
>>> l=list(map(str,l))
>>> list(map(pd.to_datetime,l))
[Timestamp('2018-10-07 00:00:00')]
maybe the shortest solution, which exactly matches your situation, would be:
mylist.append(str(AnyDate)[:10])
or even shorter, e.g.:
f'{AnyDate}'[:10]
PS: it doesn't need to be today.

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