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How to pass a user defined argument in scrapy spider

... The above code is only partially working for me. For eg. If I define domain using self.domain, I'm still not able to access it outside the __init__ method. Python throws a not defined error. BTW, why have you omitted the super call? PS. I'm working wit...
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How can I replace every occurrence of a String in a file with PowerShell?

Using PowerShell, I want to replace all exact occurrences of [MYID] in a given file with MyValue . What is the easiest way to do so? ...
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How can I force users to access my page over HTTPS instead of HTTP?

... The way I've done it before is basically like what you wrote, but doesn't have any hardcoded values: if($_SERVER["HTTPS"] != "on") { header("Location: https://" . $_SERVER["HTTP_HOST"] . $_SERVER["REQUEST_URI"]); exit(); } ...
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Makefile, header dependencies

...vided by the gnu preprocessor are a bit confusing. However, the removal of all directories from the build target with -MM is documented and not a bug [gpp]: By default CPP takes the name of the main input file, deletes any directory components and any file suffix such as ‘.c’, and appends ...
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Is it valid to replace http:// with // in a ?

... we test our sites in Firefox, Safari, IE6, IE7 and Opera. These browsers all understand that URL format. share | improve this answer | follow | ...
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Test if a variable is a list or tuple

... excludes custom sequences, iterators, and other things that you might actually need. However, sometimes you need to behave differently if someone, for instance, passes a string. My preference there would be to explicitly check for str or unicode like so: import types isinstance(var, types.String...
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Execution of Python code with -m option or not

...st python -m foo.bar.baz foo.bar __main__ As a result, Python has to actually care about packages when using the -m switch. A normal script can never be a package, so __package__ is set to None. But run a package or module inside a package with -m and now there is at least the possibility of a pac...
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Stop all active ajax requests in jQuery

I have a problem, when submitting a form all active ajax request fail, and that triggers error event. 16 Answers ...
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How do you serialize a model instance in Django?

... You can easily use a list to wrap the required object and that's all what django serializers need to correctly serialize it, eg.: from django.core import serializers # assuming obj is a model instance serialized_obj = serializers.serialize('json', [ obj, ]) ...
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Android Studio says “cannot resolve symbol” but project compiles

...alidate and Restart" option to fix this. EDIT 2: This fix should work for all similar incidents and is not a twitter4j specific resolution. share | improve this answer | fol...