Avoiding cyclic imports, but how...?
还没有人认领这个 Issue。
评估
- 难度
- 4/5
- 预计耗时
- 3-5 天
- 新手友好度
- 28/100
- Issue 类型
- 缺陷
- 描述清晰度
- 基本清楚
- 活跃度
- 停滞
- 技术栈
- javascript, python
- 领域
- compilers
调研方向
Start by reproducing the recursion error from the minimal mylib example using test.py and test.html, then inspect the generated JavaScript around the imports in mylib/a.py, mylib/b.py, mylib/examine.py, and mylib/init.py. Compare the Transcrypt output with CPython's behavior and determine whether cyclic imports can be supported or need a documented limitation and workaround.
由索引模型根据 Issue 内容生成。
描述
Hi, I'm still trying to port a library that initially was written to run with PyJS to Transcrypt, and got into one more issue where I was not able to find any running solution. I am trying to describe the problem in a much simpler test case, which does exactly the same and runs in the same problem, a "too much recursion" message in the browser.
.
├── mylib
│ ├── a.py
│ ├── b.py
│ ├── examine.py
│ └── __init__.py
├── test.html
└── test.py
mylib/a.py:
from mylib import examine
class A(object):
def examine(self):
examine.examine()
mylib/b.py:
from mylib.a import A
class B(A):
pass
mylib/examine.py:
import mylib
def examine():
for key in dir(mylib):
print(key)
mylib/__init__.py:
from mylib.a import A
from mylib.b import B
import mylib.examine
The reason for the function examine() in mylib.examine is, that it both should be callable outise of A or in context of A, and it examines the contents of the mylib module, its objects and classes.
CPython compiles and runs this without compromise. The Transcrypt-generated output runs into an recursion error, because mylib.examine imports examine. According to issue #106, cyclic imports are a problem. So, surely, this is more a question how I have to style my code, but I can't find a solution right now... can this problem be solved in any way?
- 主要语言
- Python
- 星标
- 2.9k
- 派生
- 218
- PR 合并指标
- 30 天内没有已合并 PR
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- 提交 Pull Request,并在描述里引用这个 Issue 编号。
TranscryptOrg/Transcrypt 的其他 Issue
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难度 2/5 1-3 小时 新手友好度 84/100
TranscryptOrg/Transcrypt#913 ·
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难度 2/5 1-3 小时 新手友好度 88/100
TranscryptOrg/Transcrypt#911 · 2 条评论 ·
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IS: bug
难度 2/5 1-3 小时 新手友好度 70/100
TranscryptOrg/Transcrypt#908 ·
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SUB: documentation
难度 1/5 1 小时以内 新手友好度 62/100
TranscryptOrg/Transcrypt#656 · 7 条评论 ·
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难度 3/5 1-2 天 新手友好度 76/100
TranscryptOrg/Transcrypt#914 ·
查看 TranscryptOrg/Transcrypt 的全部 Issue
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