/
exceptions.py
52 lines (37 loc) · 1.22 KB
/
exceptions.py
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"""
Scrapy core exceptions
These exceptions are documented in docs/topics/exceptions.rst. Please don't add
new exceptions here without documenting them there.
"""
# Internal
class NotConfigured(Exception):
"""Indicates a missing configuration situation"""
pass
# HTTP and crawling
class IgnoreRequest(Exception):
"""Indicates a decision was made not to process a request"""
class DontCloseSpider(Exception):
"""Request the spider not to be closed yet"""
pass
class CloseSpider(Exception):
"""Raise this from callbacks to request the spider to be closed"""
def __init__(self, reason='cancelled'):
self.reason = reason
# Items
class DropItem(Exception):
"""Drop item from the item pipeline"""
pass
class NotSupported(Exception):
"""Indicates a feature or method is not supported"""
pass
# Commands
class UsageError(Exception):
"""To indicate a command-line usage error"""
def __init__(self, *a, **kw):
self.print_help = kw.pop('print_help', True)
super(UsageError, self).__init__(*a, **kw)
class ScrapyDeprecationWarning(Warning):
"""Warning category for deprecated features, since the default
DeprecationWarning is silenced on Python 2.7+
"""
pass