loops - Python: Find date beginning two months prior to today AND start on a Monday -


so beginner python , have been working datetime, time, , timedelta libraries little bit. trying create piece of code gives me date approximately 2 months ago(exact_two_months_date) today (whatever today happens be). catch is, want find date approx. 2 months ago , begin actual start_date on monday of week. in theory, actual start date not 2 months ago. week beginning on monday 2 months ago today.

example pseudocode:     today = '20150425' ## '%y%m%d' ... saturday     exact_two_months_date = '20150225' ## 2 months ago ... wednesday     start_date = '20150223' ## monday of week 2 months ago

so how find 'start_date' above? if day 2 months ago begins on saturday or sunday, want go next monday. hope clear , makes sense... once find start date, increment day day(only week days) 'today'.
appreciate feedback, thanks.

calculating dates using python-dateutil
if dependency on third-party package option, ☞ python-dateutil provides convenient method calculate dates.

browse docs ☞ relativedelta see wealth of supported parameters. more calculations package needs dates, more helper module dateutil justifies dependency. more inspiration on has offer see ☞ examples page.

quick run-through:

>>> import datetime >>> dateutil.relativedelta import relativedelta  >>> today = datetime.date.today() >>> two_m_ago = today - relativedelta(months=2) >>> # print two_m_ago ~> datetime.date(2015, 2, 25)  >>> monday = two_m_ago - datetime.timedelta(days=two_m_ago.weekday()) >>> # print monday ~> datetime.date(2015, 2, 23)

getting monday weekday()
once have date 2 months ago in variable two_m_ago, subtract index of weekday() it. index 0 monday , goes way 6 sunday. if two_m_ago monday, subtracting 0 not cause changes.


Comments

Post a Comment

Popular posts from this blog

asp.net mvc - SSO between MVCForum and Umbraco7 -

i need integrate sso between mvcforum (forum of company) , umbraco7 (manages cms company). however struggling shared authentication work. tried several ways suggested on other threads still not running expected. here did: 1. in mvcforum (forum.mywebsite.com) 1.1. machine key in web.xml: <machinekey validationkey="the same key umbraco7" decryptionkey="the same key umbraco7" validation="sha1" decryption="aes" /> 1.2. authenticate forms in web.xml <forms name="my-sso-auth" protection="all" path="/" timeout="43200" domain="forum.mywebsite.com" loginurl="/members/logon" enablecrossappredirects="true" /> 2. in umbraco7 (news.mywebsite.com) 2.1. machine key in web.xml: <machinekey validationkey="the same key mvcforum" decryptionkey="the same key mvcforum" validation="sha1" decryption="aes" /> 2.2. a
Read more

Python Tkinter keyboard using bind -

i have problem using bind option can click button in keyboard, , call function once key pressed. tried taking other codes have similar purpose , saw i'm doing pretty same, though still have problem must've missed. thankful if me this. here's code: # -*- coding: utf-8 -*- #imports tkinter import * pil import imagetk, image import time import tkmessagebox #===========================================================================================================================================# #tkinter class class app(frame): def __init__(self, master=none): frame.__init__(self, master) self.pack() #===========================================================================================================================================# #game pieces classes class board: def __init__(self, rows = 7, columns = 6, picture_height = none, picture_width = none): self.rows = rows self.columns = columns self.picture
Read more

ubuntu - Selenium Node Not Connecting to Hub, Not Opening Port -

i'm trying set demo selenium grid. have digital ocean ubuntu 14.02 droplet. (i have 2 , tried set using 2 different machines got nowhere.) i'm trying run hub , node both locally. here input both hub, node, , nmap results. https://gist.github.com/mekhami/d5bbecca5ff0de9d2dc9 so, node starting tcp connection reset , port it's supposed operate on closed. i have had no luck in number of different options , configurations work. but... of course, worked randomly once. don't know why, don't know did, know 1 brief moment, node connected , saw on grid console. tried run test , went down again , i've never seen come up. please let me know more information can provide. update: randomly came online again. don't know happened, might related timeout or time_wait or going on. this because vm/server not have enough entropy available. to resolve problem, install haveged (or other similar things). the instructions of how install haveged on ubu
Read more