我已经理解了。这非常令人沮丧,特别是对于那些从python2转移过来的人。
无论模块是相对路径还是绝对路径,都必须在模块后添加一个
.
。
我按照以下方式创建了目录设置。
/main.py
--/lib
--/__init__.py
--/mody.py
--/modx.py
modx.py
def does_something():
return "I gave you this string."
mody.py
from modx import does_something
def loaded():
string = does_something()
print(string)
main.py
from lib import mody
mody.loaded()
当我执行main方法时,会发生以下情况。
$ python main.py
Traceback (most recent call last):
File "main.py", line 2, in <module>
from lib import mody
File "/mnt/c/Users/Austin/Dropbox/Source/Python/virtualenviron/mock/package/lib/mody.py", line 1, in <module>
from modx import does_something
ImportError: No module named 'modx'
我运行了2to3,核心输出如下:
RefactoringTool: Refactored lib/mody.py
--- lib/mody.py (original)
+++ lib/mody.py (refactored)
@@ -1,4 +1,4 @@
-from modx import does_something
+from .modx import does_something
def loaded():
string = does_something()
RefactoringTool: Files that need to be modified:
RefactoringTool: lib/modx.py
RefactoringTool: lib/mody.py
我不得不修改mody.py的导入语句来修复它。
try:
from modx import does_something
except ImportError:
from .modx import does_something
def loaded():
string = does_something()
print(string)
然后我再次运行了main.py,得到了预期的输出。
$ python main.py
I gave you this string.
最后,只需要清理一下并使其在2和3之间可移植。
from __future__ import absolute_import
from .modx import does_something
python test.py
命令来执行,都能正常运行。虽然我没有PyCharm,但可能是PyCharm的某些配置问题导致了这个问题。 - Copperfield