Question

我似乎无法从我的脚本中加载我的模块和类文件，但它从REPL加载

我有一个相当简单的项目结构

/home/user/project/
/home/user/project/bin/
/home/user/project/bin/myscript.py
/home/user/project/lib/
/home/user/project/lib/mymodule/__init__.py
/home/user/project/lib/mymodule/example.py

当我运行Python REPL时，一切运行正常。

$export PYTHONPATH=./lib:$PYTHONPATH # Making sure that the REPL and script have access
$python
Python 2.7.8 blashblahblah
...
>from mymodule.example import MyClass
>test = MyClass()
>^D
$./bin/myscript.py
Traceback (most recent call last):
  File "myscript.py", line 5, in <module>
    from mymodule.example import MyClass
  File "/path/to/myscript.py", line 5, in <module>
    from mymodule.example import MyClass
ImportError: No module named example

Answer 1

我会在这里回答我自己的问题。事实证明，脚本名称是＆＃39; mymodule.py＆＃39;

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从repl导入时，pythonpath会解析为lib / mymodule模块，并且（主要）正确加载代码。运行脚本bin/ bin/mymodule.py lib/ lib/mymodule/ lib/mymodule/__init__.py lib/mymodule/example.py时，python解释器会将脚本的目录mymodule.py添加到pythonpath 。 然后脚本会看到mymodule的一个import语句，并且自己来源。当找不到可以遍历的名称空间来查找＆＃39;示例＆＃39;在脚本中，它会抛出ImportError。

解决方案是重命名模块或重命名脚本（例如bin/），以便命名空间不会发生冲突。

我如何使用PYTHONPATH

1 个答案: