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python-2.7 - 无法在我的 docker 映像上运行 pytest，“无效语法”

问题描述

我尝试在我的 docker 映像上运行 pytest，但它报告了“无效语法”错误。allure 对 python 版本有要求吗？我的 docker 镜像上的 python 版本是 2.7.13。谁能帮我？

root@ubuntu:/fuego-rw/buildzone# pytest allure_title.py 
Traceback (most recent call last):
  File "/usr/local/bin/pytest", line 11, in <module>
    sys.exit(main())
  File "/usr/local/lib/python2.7/dist-packages/_pytest/config/__init__.py", line 65, in main
    config = _prepareconfig(args, plugins)
  File "/usr/local/lib/python2.7/dist-packages/_pytest/config/__init__.py", line 214, in _prepareconfig
    pluginmanager=pluginmanager, args=args
  File "/usr/local/lib/python2.7/dist-packages/pluggy/hooks.py", line 286, in __call__
    return self._hookexec(self, self.get_hookimpls(), kwargs)
  File "/usr/local/lib/python2.7/dist-packages/pluggy/manager.py", line 93, in _hookexec
    return self._inner_hookexec(hook, methods, kwargs)
  File "/usr/local/lib/python2.7/dist-packages/pluggy/manager.py", line 87, in <lambda>
    firstresult=hook.spec.opts.get("firstresult") if hook.spec else False,
  File "/usr/local/lib/python2.7/dist-packages/pluggy/callers.py", line 203, in _multicall
    gen.send(outcome)
  File "/usr/local/lib/python2.7/dist-packages/_pytest/helpconfig.py", line 94, in pytest_cmdline_parse
    config = outcome.get_result()
  File "/usr/local/lib/python2.7/dist-packages/pluggy/callers.py", line 81, in get_result
    _reraise(*ex)  # noqa
  File "/usr/local/lib/python2.7/dist-packages/pluggy/callers.py", line 187, in _multicall
    res = hook_impl.function(*args)
  File "/usr/local/lib/python2.7/dist-packages/_pytest/config/__init__.py", line 789, in pytest_cmdline_parse
    self.parse(args)
  File "/usr/local/lib/python2.7/dist-packages/_pytest/config/__init__.py", line 997, in parse
    self._preparse(args, addopts=addopts)
  File "/usr/local/lib/python2.7/dist-packages/_pytest/config/__init__.py", line 943, in _preparse
    self.pluginmanager.load_setuptools_entrypoints("pytest11")
  File "/usr/local/lib/python2.7/dist-packages/pluggy/manager.py", line 299, in load_setuptools_entrypoints
    plugin = ep.load()
  File "/usr/local/lib/python2.7/dist-packages/importlib_metadata/__init__.py", line 105, in load
    module = import_module(match.group('module'))
  File "/usr/lib/python2.7/importlib/__init__.py", line 37, in import_module
    __import__(name)
  File "/usr/local/lib/python2.7/dist-packages/_pytest/assertion/rewrite.py", line 304, in load_module
    exec(co, mod.__dict__)
  File "/usr/local/lib/python2.7/dist-packages/allure_pytest/plugin.py", line 3, in <module>
    import allure
  File "/usr/local/lib/python2.7/dist-packages/allure.py", line 1, in <module>
    from allure_commons._allure import title
  File "/usr/local/lib/python2.7/dist-packages/allure_commons/__init__.py", line 3, in <module>
    from allure_commons._allure import fixture  # noqa: F401
  File "/usr/local/lib/python2.7/dist-packages/allure_commons/_allure.py", line 165
    def __call__(self, func: _TFunc) -> _TFunc:
                           ^
SyntaxError: invalid syntax

标签： python-2.7pytestallure

解决方案

这个语法：

func: _TFunc

被称为类型提示，意味着变量func应该是类型_TFunc（简单来说，num: int意味着变量num应该是int）。

类型提示功能仅在Python3.0 ( PEP 3107 ) 和Python3.5 ( PEP 484 ) 中可用，因此在您使用的版本Python2.7中不可用。

def func(num: int):
    print(num)

func(1)

使用 Python2

  File "Main.py", line 1
    def func(num: int):
                ^
SyntaxError: invalid syntax

使用 Python3

1

将您的 Python 版本升级到 >=3.5 或使用旧版本的 allure-pytest。我建议升级 Python，因为这样会更可持续。

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