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How to pass a user defined argument in scrapy spider
I am trying to pass a user defined argument to a scrapy's spider. Can anyone suggest on how to do that?
5 Answers
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What is the difference between MacVim and regular Vim?
...e or the other is just a question of context for me.
Also, like El Isra said, the default vim (CLI) in OS X is slightly outdated. You may install an up-to-date version via MacPorts or you can install MacVim and add an alias to your .profile:
alias vim='/path/to/MacVim.app/Contents/MacOS/Vim'
to ...
How can I save an image with PIL?
...is code for my problem, but I get plain black images. Does anyone have any idea about this? stackoverflow.com/questions/24266000/…
– user961627
Jun 17 '14 at 15:08
add a com...
Importing from a relative path in Python
...r):
Python 2.6 and 3.x supports proper relative imports, where you can avoid doing anything hacky. With this method, you know you are getting a relative import rather than an absolute import. The '..' means, go to the directory above me:
from ..Common import Common
As a caveat, this will only ...
Difference between knockout View Models declared as object literals vs functions
...elf.items.remove(item);
}
};
Now, if you are in the scope of an individual item and call $root.removeItem, the value of this will actually be the data being bound at that level (which would be the item). By using self in this case, you can ensure that it is being removed from the overall view...
JPA or JDBC, how are they different?
...nderlying technologies behind most Java database access (including JPA providers).
One of the issues with traditional JDBC apps is that you can often have some crappy code where lots of mapping between data sets and objects occur, logic is mixed in with SQL, etc.
JPA is a standard for Object Relat...
Shading a kernel density plot between two points.
...
I never would have gotten that to work if you had not provided the structure. Thanks!
– JD Long
Aug 16 '10 at 17:17
2
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What are conventions for filenames in Go?
...
There's a few guidelines to follow.
File names that begin with "." or "_" are ignored by the go tool
Files with the suffix _test.go are only compiled and run by the go test tool.
Files with os and architecture specific suffixes automatical...
Nullable vs. int? - Is there any difference?
...e gory details see this question, but to give you a quick example here:
void Test<T>(T a, bool b)
{
var test = a is int? & b; // does not compile
var test2 = a is Nullable<int> & b; // does compile
}
The first line gives the following error messages:
e...
How to un-commit last un-pushed git commit without losing the changes
...ill be removed from your current branch. See git reset man
In case you did push publicly (on a branch called 'master'):
git checkout -b MyCommit //save your commit in a separate branch just in case (so you don't have to dig it from reflog in case you screw up :) )
revert commit normally and pu...