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Python pip install fails: invalid command egg_info

I find that recently often when I try to install a Python package using pip , I get the error(s) below. 15 Answers ...
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How to get year, month, day, hours, minutes, seconds and milliseconds of the current moment in Java?

...t an int to String, make use of String#valueOf(). If your intent is after all to arrange and display them in a human friendly string format, then better use either Java8's java.time.format.DateTimeFormatter (tutorial here), LocalDateTime now = LocalDateTime.now(); String format1 = now.format(DateTi...
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Currency formatting in Python

...ting. >>> import locale >>> locale.setlocale( locale.LC_ALL, '' ) 'English_United States.1252' >>> locale.currency( 188518982.18 ) '$188518982.18' >>> locale.currency( 188518982.18, grouping=True ) '$188,518,982.18' ...
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jQuery: Best practice to populate drop down?

The example I see posted all of the time seems like it's suboptimal, because it involves concatenating strings, which seems so not jQuery. It usually looks like this: ...
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get the latest fragment in backstack

...gment in the back stack twice, you can't retrieve a specific fragment when all you have is the index or backstackentry entity. – Justin May 29 '14 at 15:54 14 ...
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Why use non-member begin and end functions in C++11?

...r that container. However, C++11 has apparently introduced free functions called std::begin and std::end which call the begin and end member functions. So, instead of writing ...
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What is the difference between a weak reference and an unowned reference?

...a.k.a. they don't increase the retain count in order to prevent ARC from deallocating the referred object). But why two keywords? This distinction has to do with the fact that Optional types are built-in the Swift language. Long story short about them: optional types offer memory safety (this works ...
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Selecting/excluding sets of columns in pandas [duplicate]

... @3kstc you can use df1.iloc[:, [-1]] this will select all rows, last column. – Kocur4d Apr 25 '18 at 10:16 ...
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Execution failed app:processDebugResources Android Studio

...bug https://code.google.com/p/android/issues/detail?id=42752. The cause usually seems to be a reference to a nonexistent string in one of your menu resources. share | improve this answer | ...
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Android canvas draw rectangle

... Actually this is what I need screencast.com/t/oFYF5kGtw5B that red rectangle after I draw all just to add that rectangle is that possible? – Kec Sep 8 '11 at 9:22 ...