Path: csiph.com!v102.xanadu-bbs.net!xanadu-bbs.net!feeder.erje.net!eu.feeder.erje.net!feeds.phibee-telecom.net!newsfeed.xs4all.nl!newsfeed4.news.xs4all.nl!xs4all!post.news.xs4all.nl!not-for-mail Return-Path: X-Original-To: python-list@python.org Delivered-To: python-list@mail.python.org X-Spam-Status: OK 0.026 X-Spam-Evidence: '*H*': 0.95; '*S*': 0.00; 'subject:form': 0.07; 'parameter': 0.09; 'sure,': 0.09; 'cc:addr:python-list': 0.11; 'jan': 0.12; 'from:addr:rosuav': 0.16; 'from:name:chris angelico': 0.16; 'hint:': 0.16; 'sequential': 0.16; 'wrote:': 0.18; 'looked': 0.18; 'skip:p 40': 0.19; 'import': 0.22; 'cc:addr:python.org': 0.22; 'mon,': 0.24; 'cc:2**0': 0.24; 'possibly': 0.26; 'header:In- Reply-To:1': 0.27; 'message-id:@mail.gmail.com': 0.30; "i'm": 0.30; '(which': 0.31; 'gives': 0.31; 'that.': 0.31; 'subject:all': 0.32; 'subject:the': 0.34; 'monday': 0.35; 'but': 0.35; 'received:google.com': 0.35; 'pm,': 0.38; 'subject:" ': 0.39; 'length': 0.61; 'till': 0.61; 'more': 0.64; 'day': 0.76; 'power': 0.76; '2015': 0.84; 'skip:: 20': 0.84; 'to:none': 0.92 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:in-reply-to:references:date:message-id:subject:from:cc :content-type; bh=mzBsJOth7Ze3sZjJ263GgzjAdO7DQOsqg53J5D9DZgA=; b=SzIqS+xCjYdzRo5eT5/B4fuZVDJtiM+hwsRbn4jS9V8YFgP5z9E1XiM880HuSw2liz icQ91NNRSdY9m7GNFzDUWIEpXeuEYFvjZW8nUDcrV8sEA2+LZ11bg+G/Lo/PwiC3QqsZ 2YE3gf95TtLIY/LMtqlKMXkfbT2xF0TY33abEJXys9Gnf0Y2Mjl67O0lnXcPM9DWt1/6 AhSeq8e5w+d1NgMHzL6K+hOV/ewFgoIoyjYiDJL3WwLtppN4xzTlZKy1L+9lwuOvTo+M gonqxJdzTJ086heol0UsOhGyVJYOieekjFECrQ0ILXth3BMjbvEZUSvOfAwkBlv8urGB lBUQ== MIME-Version: 1.0 X-Received: by 10.42.52.200 with SMTP id k8mr56675170icg.26.1420459987379; Mon, 05 Jan 2015 04:13:07 -0800 (PST) In-Reply-To: References: Date: Mon, 5 Jan 2015 23:13:07 +1100 Subject: Re: how to select all the monday form "20150101" till "20150620"? From: Chris Angelico Cc: "python-list@python.org" Content-Type: text/plain; charset=UTF-8 X-BeenThere: python-list@python.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: General discussion list for the Python programming language List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Newsgroups: comp.lang.python Message-ID: Lines: 19 NNTP-Posting-Host: 2001:888:2000:d::a6 X-Trace: 1420459989 news.xs4all.nl 2977 [2001:888:2000:d::a6]:47937 X-Complaints-To: abuse@xs4all.nl Xref: csiph.com comp.lang.python:83237 On Mon, Jan 5, 2015 at 4:49 PM, length power wrote: > import pandas as pd > rng = pd.date_range("20150101","20150620",freq="D") > for day in rng: > x = pd.to_datetime(day) > y = x.timetuple().tm_wday > if(y == 0) :print(x.strftime("%Y%m%d")) > > > I have selected all the monday form "20150101" till "20150620",how to make > it more simple? I'm not sure, but I suspect your freq="D" parameter means that it gives you sequential days. If you start at 20150105 (which is a Monday), and change that to freq="W" or possibly freq="7D", it might work just like that. Hint: Have you looked at the pandas documentation? ChrisA