head | 易学教程

Getting HEAD content with Python Requests

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I'm trying to parse the result of a HEAD request done using the Python Requests library, but can't seem to access the response content. According to the docs , I should be able to access the content from requests.Response.text. This works fine for me on GET requests, but returns None on HEAD requests. GET request (works) import requests response = requests.get(url) content = response.text content = <html>...</html> HEAD request (no content) import requests response = requests.head(url) content = response.text content = None EDIT OK I've quickly realized form the answers that the HEAD request

When do you put Javascript in body, when in head and when use doc.load? [duplicate]

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Possible Duplicate: Where to place Javascript in a HTML file? Should I write script in the body or the head of the html? I've always wondered, mainly because when creating pages I always run into trouble, based on the following thing: When do you write your javascript In the <head> In the <body> with a $(document).ready() I could be stupid, but I've had a few times when my JavaScript (/jQuery) wasn't executed because of the wrong place or yes or no doc.ready() command. So I'm really wondering so. Same goes for jQuery and 'var' command $(document).ready() simply ensures that all DOM elements

Is header('Content-Type:text/plain'); necessary at all?

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I didn't see any difference with or without this head information yet. Jeremy Logan Define "necessary". It is necessary if you want the browser to know what the type of the file is. PHP automatically sets the Content-Type header to text/html if you don't override it so your browser is treating it as an HTML file that doesn't contain any HTML. If your output contained any HTML you'd see very different outcomes. If you were to send: test a Content-Type: text/html would output: test whereas Content-Type: text/plain would output: test TLDR Version: If you really are

Jquery add css to head

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问题 I am asynchronously adding a few scripts and style sheets to a project that I am building and would like to keep the style sheets all grouped together in the HEAD. <head> <title>home</title> <meta charset="utf-8"> <link rel="Shortcut Icon" type="image/ico" href="/img/favicon.png">  <link rel="stylesheet" href="/css/fonts-and-colors.css" type="text/css" media="screen"> <link rel="stylesheet" href="/css/layout.css" type="text/css" media="screen">  <script type="text

Get first element of Series without knowing the index [duplicate]

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问题 This question already has an answer here: Pandas - Get first row value of a given column 7 answers Is that any way that I can get first element of Seires without have information on index. For example,We have a Series import pandas as pd key='MCS096' SUBJECTS=pd.DataFrame({'ID':Series([146],index=[145]),\ 'study':Series(['MCS'],index=[145]),\ 'center':Series(['Mag'],index=[145]),\ 'initials':Series(['MCS096'],index=[145]) }) prints out SUBJECTS: print (SUBJECTS[SUBJECTS.initials==key]['ID'])

http HEAD vs GET performance

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I am setting-up a REST web service that just need to answer YES or NO, as fast as possible. Designing a HEAD service seems the best way to do it but I would like to know if I will really gain some time versus doing a GET request. I suppose I gain the body stream not to be open/closed on my server (about 1 millisecond?). Since the amount of bytes to return is very low, do I gain any time in transport, in IP packet number? Thanks in advance for your response! Edit: To explain further the context: I have a set of REST services executing some processes, if they are in an active state. I have

Pandas - Get first row value of a given column

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问题 This seems like a ridiculously easy question... but I'm not seeing the easy answer I was expecting. So, how do I get the value at an nth row of a given column in Pandas? (I am particularly interested in the first row, but would be interested in a more general practice as well). For example, let's say I want to pull the 1.2 value in Btime as a variable. Whats the right way to do this? df_test = ATime X Y Z Btime C D E 0 1.2 2 15 2 1.2 12 25 12 1 1.4 3 12 1 1.3 13 22 11 2 1.5 1 10 6 1.4 11 20

unstaged files gone after git reset --hard

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问题 I tried the git reset --hard HEAD@{n} from git reflog and I lost everything with my current unstaged files :'( the unstaged files is the last git add I did, before then I tried git reset to the last git commit . And all my files gone, I can't go back to the git add before last commit :'( 回答1: It's not clear if you lost files in your working directory, or files in the index. You say you lost your "unstaged files", but then you mention you might have run "git add". "unstaged files" are lost for

How to programmatically add JS and CSS resources to <h:head>?

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问题 I need to add programmatically JS and CSS resources to <h:head> of JSF page. It isn't clear how to achieve this. Could someone give a hint or a kickoff example? 回答1: That depends on where exactly you'd like to declare the resource. Normally , the only reason to programmatically declare them is that you've a custom UIComponent or Renderer which generates HTML code which in turn requires those JS and/or CSS resources. They are then to be declared by @ResourceDependency or @ResourceDependencies.

Head and tail in one line

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Is there a pythonic way to unpack a list in the first element and the "tail" in a single command? For example: >> head, tail = **some_magic applied to** [1, 1, 2, 3, 5, 8, 13, 21, 34, 55] >> head 1 >>> tail [1, 2, 3, 5, 8, 13, 21, 34, 55] Under Python 3.x, you can do this nicely: >>> head, *tail = [1, 1, 2, 3, 5, 8, 13, 21, 34, 55] >>> head 1 >>> tail [1, 2, 3, 5, 8, 13, 21, 34, 55] A new feature in 3.x is to use the * operator in unpacking, to mean any extra values. It is described in PEP 3132 - Extended Iterable Unpacking . This also has the advantage of working on any iterable, not just