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what is the difference between 'transform' and 'fit_transform' in sklearn

...is meant for when you have already computed PCA, i.e. if you have already called its .fit method. In [12]: pc2 = RandomizedPCA(n_components=3) In [13]: pc2.transform(X) # can't transform because it does not know how to do it. -------------------------------------------------------------------------...
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How can strings be concatenated?

...ine break in a string using \n or you can do a line continuation in Python by putting a \ at the end of the line. – mpen Nov 28 '13 at 20:45 ...
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How to call erase with a reverse iterator

... Who guarantee you that iterators in a list are ordered ? – Gaetano Mendola Nov 16 '18 at 15:42 ...
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How to delete items from a dictionary while iterating over it?

...-------------------------------------------------- Traceback (most recent call last): File "<ipython console>", line 1, in <module> RuntimeError: dictionary changed size during iteration As stated in delnan's answer, deleting entries causes problems when the iterator tries to move on...
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How to reposition Chrome Developer Tools

... You could clarify that you have to click AND HOLD this button in order to dock to the right. As @PaulSpencer noticed, simply clicking only undocks. – 0x89 Nov 16 '12 at 13:38 ...
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Using “label for” on radio buttons

... imageUploader: { brandingHtml: "Powered by \u003ca href=\"https://imgur.com/\"\u003e\u003csvg class=\"svg-icon\" width=\"50\" height=\"18\" viewBox=\"0 0 50 18\" fill=\"none\" xmlns=\"http://www.w3.org/2000/svg\"\u003e\u003cpath d=\"M46.1709 9.17788C46.1709 8.26454...
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Run a Docker image as a container

...s something to run. You could replace that with a program that you've installed. /bin/bash is just a handy shell that's already installed. – Ryan Shillington Feb 9 '17 at 15:11 ...
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Using do block vs braces {}

... Ruby cookbook says bracket syntax has higher precedence order than do..end Keep in mind that the bracket syntax has a higher precedence than the do..end syntax. Consider the following two snippets of code: 1.upto 3 do |x| puts x end 1.upto 3 { |x| puts x } # SyntaxE...
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How to do two-way filtering in AngularJS?

... Highly active question. Earn 10 reputation in order to answer this question. The reputation requirement helps protect this question from spam and non-answer activity. ...
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Create a .csv file with values from a Python list

...he values from a Python list. When I print the values in the list they are all unicode (?), i.e. they look something like this ...