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What does “error: option --single-version-externally-managed not recognized” indicate?

...ding PyObjC and astropy ). I've never seen this error before, but it's now also showing up on travis-ci builds for which nothing has changed. ...
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pandas GroupBy columns with NaN (missing) values

... from pandas 1.1 you have better control over this behavior, NA values are now allowed in the grouper using dropna=False share | improve this answer | follow |...
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What is the purpose and use of **kwargs?

...Swim(where, why) elif what == 'walk': doWalk(where, why) ... Now you get a new method "drive": elif what == 'drive': doDrive(where, why, vehicle) But wait a minute, there is a new parameter "vehicle" -- you did not know it before. Now you must add it to the signature of the myDo-...
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How can I reliably determine the type of a variable that is declared using var at design time?

... a local can be expensive so we want to defer that work if we need to. We now have a lazily-built database that can tell us the type of every local. So, getting back to that "foo." -- we figure out which statement the relevant expression is in and then run the semantic analyzer against just that st...
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How do I get the current time only in JavaScript

... // => 30 d.getSeconds(); // => 51 or var d = new Date(); // for now d.getHours(); // => 9 d.getMinutes(); // => 30 d.getSeconds(); // => 51 share | improve this answer ...
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How to convert an address into a Google Maps Link (NOT MAP)

...: maps.google.com/?ll=38.882147,-76.99017 UPDATE As of year 2017, Google now has an official way to create cross-platform Google Maps URLs: https://developers.google.com/maps/documentation/urls/guide You can use links like https://www.google.com/maps/search/?api=1&query=1200%20Pennsylvania...
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Issue with virtualenv - cannot activate

...cannot. It might just be syntax or folder location, but I am stumped right now. 21 Answers ...
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What is the difference between bottom-up and top-down?

...tree may be infinitely large. Furthermore, in some problems you might not know what the full tree looks like ahead of time. Thus, you might need a strategy/algorithm to decide which subproblems to reveal.) Memoization, Tabulation There are at least two main techniques of dynamic programming whic...
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Remove all breakpoints in IntelliJ IDEA

...ect, hence the comment vs an answer), but I think the keyboard shortcut is now Alt+F9. Ctrl+Shift+F8 doesn't do anything for me. – Brandon Jan 2 '17 at 18:34 9 ...
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Deny access to one specific folder in .htaccess

... used this to disable direct access to my api files inside /api folder but now all webservice call sending 403 forbidden status .. I just want to block access when someone access it from browser. – ravisoni Jul 31 '14 at 9:25 ...