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体验新版 GitCode,发现更多精彩内容 >>
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16e62e9c
编写于
8月 13, 2014
作者:
J
Julia Medina
提交者:
Daniel Graña
9月 01, 2014
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差异文件
Per-spider settings documentation
上级
9ef3972c
变更
3
隐藏空白更改
内联
并排
Showing
3 changed file
with
24 addition
and
6 deletion
+24
-6
docs/topics/api.rst
docs/topics/api.rst
+1
-0
docs/topics/settings.rst
docs/topics/settings.rst
+14
-6
docs/topics/spiders.rst
docs/topics/spiders.rst
+9
-0
未找到文件。
docs/topics/api.rst
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16e62e9c
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@@ -172,6 +172,7 @@ Settings API
'default': 0,
'command': 10,
'project': 20,
'spider': 30,
'cmdline': 40,
}
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docs/topics/settings.rst
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16e62e9c
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@@ -36,9 +36,10 @@ different precedence. Here is the list of them in decreasing order of
precedence:
1. Command line options (most precedence)
2. Project settings module
3. Default settings per-command
4. Default global settings (less precedence)
2. Settings per-spider
3. Project settings module
4. Default settings per-command
5. Default global settings (less precedence)
The population of these settings sources is taken care of internally, but a
manual handling is possible using API calls. See the
...
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@@ -59,14 +60,21 @@ Example::
scrapy crawl myspider -s LOG_FILE=scrapy.log
2. Project settings module
2. Settings per-spider
----------------------
Spiders (See the :ref:`topics-spiders` chapter for reference) can define their
own settings that will take precedence and override the project ones. They can
do so by setting their :attr:`scrapy.spider.Spider.custom_settings` attribute.
3. Project settings module
--------------------------
The project settings module is the standard configuration file for your Scrapy
project. It's where most of your custom settings will be populated. For
example:: ``myproject.settings``.
3
. Default settings per-command
4
. Default settings per-command
-------------------------------
Each :doc:`Scrapy tool </topics/commands>` command can have its own default
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@@ -74,7 +82,7 @@ settings, which override the global default settings. Those custom command
settings are specified in the ``default_settings`` attribute of the command
class.
4
. Default global settings
5
. Default global settings
--------------------------
The global defaults are located in the ``scrapy.settings.default_settings``
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docs/topics/spiders.rst
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16e62e9c
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@@ -133,6 +133,15 @@ Spider
listed here. The subsequent URLs will be generated successively from data
contained in the start URLs.
.. attribute:: custom_settings
A dictionary of settings that will be overridden from the project wide
configuration when running this spider. It must be defined as a class
attribute since the settings are updated before instantiation.
For a list of available built-in settings see:
:ref:`topics-settings-ref`.
.. attribute:: crawler
This attribute is set by the :meth:`from_crawler` class method after
...
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