1

我在运行使用“导入枚举”的 Python 文件时遇到问题，给了我这个问题：

Traceback (most recent call last):

File "lowest_common_ancestor.py", line 4, in <module>
    from test_framework import generic_test, test_utils

File "/Users/linh/Documents/EPIJudge/epi_judge_python/test_framework/generic_test.py", line 6, in <module>
    from test_framework.generic_test_handler import GenericTestHandler

File "/Users/linh/Documents/EPIJudge/epi_judge_python/test_framework/generic_test_handler.py", line 5, in <module>
    from test_framework.binary_tree_utils import assert_equal_binary_trees, is_object_tree_type

File "/Users/linh/Documents/EPIJudge/epi_judge_python/test_framework/binary_tree_utils.py", line 5, in <module>
    from test_framework.test_failure import TestFailure, PropertyName

File "/Users/linh/Documents/EPIJudge/epi_judge_python/test_framework/test_failure.py", line 2, in <module>    
from enum import Enum, auto

ImportError: cannot import name 'auto'

我知道我有 Python 2.7 并且“导入枚举”只存在于 Python 3 中，但是我在如何创建两个不同的环境时遇到了麻烦，我同时拥有 Python 2.7 和 Python 3。如何在 Mac Unix 上执行此操作终端，我也不是很熟悉。

4

2 回答 2

1

或者像这样自己实现它：

# Implement the auto feature that becomes available in 3.6
autoinc = 0
def auto():
    global autoinc
    autoval = autoinc
    autoinc += 1
    return autoval

class AppState(Enum):
    SPLASH = auto()
    STATUS = auto()
    QRCODE = auto()
    FIREWORKS = auto()
    MESSAGES = auto()
于 2019-12-13T21:37:24.510 回答
1

auto直到 Python 3.6 才出现，并且不在enum34后端。如果你想要 2/3 兼容的代码，你需要使用1。aenum

我对 Mac Unix 终端没有任何经验。

1披露：我是Python stdlibEnum、enum34backport和Advanced Enumeration ( aenum) 库的作者。

于 2018-04-30T02:17:21.737 回答