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How do I install the yaml package for Python?
...pip install pyyaml
If you want to install python yaml system-wide in linux, you can also use a package manager, like aptitude or yum:
$ sudo apt-get install python-yaml
$ sudo yum install python-yaml
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Drop all duplicate rows across multiple columns in Python Pandas
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What if my columns are not explicitly labelled? How do I select the columns just based on their index?
– Hamman Samuel
Feb 9 '17 at 21:42
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Difference between open and codecs.open in Python
There are two ways to open a text file in Python:
8 Answers
8
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How to make unicode string with python3
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Literal strings are unicode by default in Python3.
Assuming that text is a bytes object, just use text.decode('utf-8')
unicode of Python2 is equivalent to str in Python3, so you can also write:
str(text, 'utf-8')
if you prefer.
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Objective-C 2.0 Mac和iOS开发实践指南 PDF扫描版 - 文档下载 - 清泛网 - ...
...发实践指南》专门为那些想要学习Objecti Ve-C以便为Mac OS x或iOS编写程序的程序员量身打造。《Objectiv...截图：
《Objective-C 2.0 Mac和iOS开发实践指南》专门为那些想要学习Objecti Ve-C以便为Mac OS x或iOS编写程序的程序员量身打造。...
How to check if a string array contains one string in JavaScript? [duplicate]
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There is an indexOf method that all arrays have (except Internet Explorer 8 and below) that will return the index of an element in the array, or -1 if it's not in the array:
if (yourArray.indexOf("someString") > -1) {
//In the array!...
Is there a way to get element by XPath using JavaScript in Selenium WebDriver?
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You can use document.evaluate:
Evaluates an XPath expression string and returns a result of the
specified type if possible.
It is w3-standardized and whole documented: https://developer.mozilla.org/en-US/docs/Web/API/Document.evaluate
function getElementByXpat...
What is %2C in a URL?
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Check out http://www.asciitable.com/
Look at the Hx, (Hex) column; 2C maps to ,
Any unusual encoding can be checked this way
+----+-----+----+-----+----+-----+----+-----+
| Hx | Chr | Hx | Chr | Hx | Chr | Hx | Chr |
+----+-----+----+-----+----+-----+----+-----+
| 00 | NUL...
I need to generate uuid for my rails application. What are the options(gems) I have? [duplicate]
...idock.com/ruby/v1_9_3_392/SecureRandom/uuid/class
– existentialmutt
Aug 25 '14 at 17:31
2
ruby 1....
What are the rules for calling the superclass constructor?
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I removed 'explicit' from the SuperClass constructor. Despite being a best practice for single-argument constructors, it wasn't germane to the discussion at hand. For more info on the explicit key word, see: weblogs.asp.net/kennykerr/ar...