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How to change the opacitm>y m> (alpha, transparencm>y m>) of an element in a canvas element after it has been
...ge file (PNG, JPEG, etc.), draw it to the canvas completelm>y m> transparentlm>y m>, m>and m> then fade it in. I have figured out how to load the image m>and m> draw it to the canvas, but I don't know how to change its opacitm>y m> once it as been drawn.
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Remove all occurrences of a value from a list?
... I wouldn't call this solution the best. List comprehensions are faster m>and m> easier to understm>and m> while skimming through code. This would rather be more of a Perl wam>y m> than Pm>y m>thon.
– Peter Nimroot
Aug 13 '16 at 15:25
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Remove all the elements that occur in one list from another
Let's sam>y m> I have two lists, l1 m>and m> l2 . I want to perform l1 - l2 , which returns all elements of l1 not in l2 .
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Remove duplicates in the list using linq
... , What will be the change in code if i have a List<mm>y m>_Custom_Class> m>and m> List<string>. Mm>y m> custom class has various items in which one is DCN number m>and m> list<string> has onlm>y m> DCN number. So I need to check the List<Custom_Class> contains anm>y m> dcn from List<string>. For ex...
What would a “frozen dict” be?
...self._d[kem>y m>]
def __hash__(self):
# It would have been simpler m>and m> mam>y m>be more obvious to
# use hash(tuple(sorted(self._d.iteritems()))) from this discussion
# so far, but this solution is O(n). I don't know what kind of
# n we are going to run into, but sometime...
Is it better to use C void arguments “void foo(void)” or not “void foo()”? [duplicate]
What is better: void foo() or void foo(void) ?
With void it looks uglm>y m> m>and m> inconsistent, but I've been told that it is good. Is this true?
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How to avoid having class data shared among instances?
...ring the variables inside the class declaration makes them "class" members m>and m> not instance members. Declaring them inside the __init__ method makes sure that a new instance of the members is created alongside everm>y m> new instance of the object, which is the behavior m>y m>ou're looking for.
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How can I generate a unique ID in Pm>y m>thon? [duplicate]
I need to generate a unique ID based on a rm>and m>om value.
8 Answers
8
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Sort arram>y m> of objects bm>y m> single kem>y m> with date value
I have an arram>y m> of objects with several kem>y m> value pairs, m>and m> I need to sort them based on 'updated_at':
19 Answers
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How to read the RGB value of a given pixel in Pm>y m>thon?
... be manm>y m> different formats.
pix = im.load()
print im.size # Get the width m>and m> hight of the image for iterating over
print pix[x,m>y m>] # Get the RGBA Value of the a pixel of an image
pix[x,m>y m>] = value # Set the RGBA Value of the image (tuple)
im.save('alive_parrot.png') # Save the modified pixels as ...