python-2.7 - 使用 Python2 和 scrapy ImportError: cannot import name suppress

Question

您好我正在尝试在 ubuntu/windows 机器上运行刮板。我已经在使用 python2 时安装了 scrapy 版本 - Scrapy 1.8.0。我可以创建一个项目，但是当我运行刮板时，会显示此错误。

Traceback (most recent call last):
  File "/home/ubuntu/.local/bin/scrapy", line 8, in <module>
    sys.exit(execute())
  File "/home/ubuntu/.local/lib/python2.7/site-packages/scrapy/cmdline.py", line 146, in execute
    _run_print_help(parser, _run_command, cmd, args, opts)
  File "/home/ubuntu/.local/lib/python2.7/site-packages/scrapy/cmdline.py", line 100, in _run_print_help
    func(*a, **kw)
  File "/home/ubuntu/.local/lib/python2.7/site-packages/scrapy/cmdline.py", line 154, in _run_command
    cmd.run(args, opts)
  File "/home/ubuntu/.local/lib/python2.7/site-packages/scrapy/commands/shell.py", line 68, in run
    crawler.engine = crawler._create_engine()
  File "/home/ubuntu/.local/lib/python2.7/site-packages/scrapy/crawler.py", line 111, in _create_engine
    return ExecutionEngine(self, lambda _: self.stop())
  File "/home/ubuntu/.local/lib/python2.7/site-packages/scrapy/core/engine.py", line 67, in __init__
    self.scheduler_cls = load_object(self.settings['SCHEDULER'])
  File "/home/ubuntu/.local/lib/python2.7/site-packages/scrapy/utils/misc.py", line 46, in load_object
    mod = import_module(module)
  File "/usr/lib/python2.7/importlib/__init__.py", line 37, in import_module
    __import__(name)
  File "/home/ubuntu/.local/lib/python2.7/site-packages/scrapy/core/scheduler.py", line 7, in <module>
    from queuelib import PriorityQueue
  File "/home/ubuntu/.local/lib/python2.7/site-packages/queuelib/__init__.py", line 1, in <module>
    from queuelib.queue import FifoDiskQueue, LifoDiskQueue
  File "/home/ubuntu/.local/lib/python2.7/site-packages/queuelib/queue.py", line 7, in <module>
    from contextlib import suppress
ImportError: cannot import name suppress

任何人都可以帮助解决这个问题吗？

标签： python-2.7ubuntuscrapy

Answer 1

contextlib.suppress函数支持，Python 3.4但您使用的是 Python 2.7 。要解决此问题，请升级您的 python 版本。