大约有 40,000 项符合查询结果(耗时:0.0609秒) [XML]

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JSONDecodeError: Expecting value: line 1 column 1 (char 0)

...on struct = {} try: try: #try parsing to dict dataform = str(response_json).strip("'<>() ").replace('\'', '\"') struct = json.loads(dataform) except: print repr(resonse_json) print sys.exc_info() Note: Quotes within the data must be properly escaped ...
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Should I use alias or alias_method?

I found a blog post on alias vs. alias_method . As shown in the example given in that blog post, I simply want to alias a method to another within the same class. Which should I use? I always see alias used, but someone told me alias_method is better. ...
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What's the difference between ES6 Map and WeakMap?

...e: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/WeakMap): Keys of WeakMaps are of the type Object only. Primitive data types as keys are not allowed (e.g. a Symbol can't be a WeakMap key). Nor can a string, number, or boolean be used as a WeakMap key. A M...
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Create a “with” block on several context managers? [duplicate]

...nd 3.1 and above, you can write: with A() as X, B() as Y, C() as Z: do_something() This is normally the best method to use, but if you have an unknown-length list of context managers you'll need one of the below methods. In Python 3.3, you can enter an unknown-length list of context manage...
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Why doesn't django's model.save() call full_clean()?

... if anyone knows if there's good reason why django's orm doesn't call 'full_clean' on a model unless it is being saved as part of a model form. ...
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hash function for string

... @Josepas the hash function should ideally return a size_t or other such unsigned value (such as the unsigned long in this code). The caller is responsible for taking modulo of the result to fit it to the hash table. The caller controls the table slot being hashed to; not the func...
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Python, remove all non-alphabet chars from string

...]', re.MULTILINE) st = 'abcdefghijklmnopqrstuvwxyz123456789!@#$%^&*()-=_+' """, number = 1000000) print(t0) #Try with join method on filter t0 = timeit.timeit(""" s = ''.join(filter(str.isalnum, st)) """, setup = """ st = 'abcdefghijklmnopqrstuvwxyz123456789!@#$%^&*()-=_+' """, number = 10...
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How do I correctly clone a JavaScript object?

...f a function. Also, an object's prototype is referenced with the attribute __proto__, which is also hidden, and will not be copied by a for/in loop iterating over the source object's attributes. I think __proto__ might be specific to Firefox's JavaScript interpreter and it may be something different...
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clang error: unknown argument: '-mno-fused-madd' (python package installation failure)

...s/2.7/include/python2.7 -fno-strict-aliasing -fno-common -dynamic -arch x86_64 -arch i386 -g -Os -pipe -fno-common -fno-strict-aliasing -fwrapv -mno-fused-madd -DENABLE_DTRACE -DMACOSX -DNDEBUG -Wall -Wstrict-prototypes -Wshorten-64-to-32 -DNDEBUG -g -fwrapv -Os -Wall -Wstrict-prototypes -DENABLE_DT...
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How to check if two arrays are equal with JavaScript? [duplicate]

...,3],[4,5,6]]) --> [[1,4],[2,5],[3,6]] return arrays[0].map(function(_,i){ return arrays.map(function(array){return array[i]}) }); }   // helper functions function allCompareEqual(array) { // e.g. allCompareEqual([2,2,2,2]) --> true // does not work with nested arra...