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Matplotlib (pyplot) savefig outputs blank image

... My solution plt.show() plt.draw() fig.set_dpi(200) fig.savefig('/image.png') – EduardoUstarez Apr 9 at 23:32 ...
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In practice, what are the main uses for the new “yield from” syntax in Python 3.3?

... etc.""" for i in range(4): yield '<< %s' % i def reader_wrapper(g): # Manually iterate over data produced by reader for v in g: yield v wrap = reader_wrapper(reader()) for i in wrap: print(i) # Result << 0 << 1 << 2 << 3 Instead of ...
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How to JSON serialize sets?

I have a Python set that contains objects with __hash__ and __eq__ methods in order to make certain no duplicates are included in the collection. ...
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How do you sort a list in Jinja2?

...ilter allows you to specify an attribute to sort by: {% for movie in movie_list|sort(attribute='rating') %} See http://jinja.pocoo.org/docs/templates/#sort share | improve this answer | ...
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Given a view, how do I get its viewController?

...nd This macro avoids category pollution: #define UIViewParentController(__view) ({ \ UIResponder *__responder = __view; \ while ([__responder isKindOfClass:[UIView class]]) \ __responder = [__responder nextResponder]; \ (UIViewController *)__responder; \ }) ...
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How can I keep Bootstrap popovers alive while being hovered?

...: true, animation: false }) .on("mouseenter", function() { var _this = this; $(this).popover("show"); $(".popover").on("mouseleave", function() { $(_this).popover('hide'); }); }).on("mouseleave", function() { var _this = this; setTimeout(function() { if ...
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How do I loop through or enumerate a JavaScript object?

...ach object in javascript (actually a key-value pair) has a property called __proto__ or prototype. This property has a reference to its parent object. An object automatically inherits property from its parent. This is the reason of using hasOwnProperty, which signifies that we're interested in objec...
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Any gotchas using unicode_literals in Python 2.6?

...ng: utf-8 name = 'helló wörld from two' one.py # encoding: utf-8 from __future__ import unicode_literals import two name = 'helló wörld from one' print name + two.name The output of running python one.py is: Traceback (most recent call last): File "one.py", line 5, in <module> ...
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How to delete a file from SD card?

...id 4.4+. But the same code working for 4.3/ – hasnain_ahmad Jul 18 '16 at 12:31  |  show 4 more comments ...
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How to check for null in Twig?

... Notice: as Twig 2.x check for variable is equal to value like is_ sameas must be {% if var is same as(false) %} not {% if var is sameas(false) %} see Doc url => twig.symfony.com/doc/2.x/tests/sameas.html – ahmed hamdy Jul 15 '19 at 17:01 ...