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1e12c92b8f
This change removes singletons for stats collection and signal
dispatching facilities, by making them a member of the Crawler class.
Here are some examples to illustrates the old and new API:
Signals - before:
from scrapy import signals
from scrapy.xlib.pydispatch import dispatcher
dispatcher.connect(self.spider_opened, signals.spider_opened)
Signals - now:
from scrapy import signals
crawler.signals.connect(self.spider.opened, signals.spider_opened)
Stats collection - before:
from scrapy.stats import stats
stats.inc_value('foo')
Stats collection - now:
crawler.stats.inc_value('foo')
Backwards compatibility was retained as much as possible and the old API
has been properly flagged with deprecation warnings.
8 lines
265 B
Python
8 lines
265 B
Python
from scrapy.project import crawler
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stats = crawler.stats
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import warnings
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from scrapy.exceptions import ScrapyDeprecationWarning
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warnings.warn("Module `scrapy.stats` is deprecated, use `crawler.stats` attribute instead",
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ScrapyDeprecationWarning, stacklevel=2)
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