blocks|key|3460544|text|要使Python模块导入工作，路径中必须有"src“，而不是"gen_py/lib”。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|3460545|在处理像import+gen_py.lib这样的导入时，它先查找模块gen_py，然后查找子模块lib。|offset|length|style|CODE|3460546|由于模块gen_py不在“../gen/lib”中(它将在“..”中)，因此您添加的路径对导入过程没有任何帮助。|3460547|根据您运行它的位置，尝试将相对路径添加到"src“文件夹。也许是sys.path.append('..')。在src文件夹中通过相对路径(如python+main/MyServer.py+)直接运行脚本也可能会成功|3460548|entityMap^0|0|4|H|Y|6|1C|3|0|4|6|0|W|L|1Y|N|0^^$0|@$1|2|3|4|5|6|7|N|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|O|8|@$D|P|E|Q|F|G]|$D|R|E|S|F|G]|$D|T|E|U|F|G]]|9|@]|A|$]]|$1|H|3|I|5|6|7|V|8|@$D|W|E|X|F|G]]|9|@]|A|$]]|$1|J|3|K|5|6|7|Y|8|@$D|Z|E|10|F|G]|$D|11|E|12|F|G]]|9|@]|A|$]]|$1|L|3|-4|5|6|7|13|8|@]|9|@]|A|$]]]|M|$]]

For the Python module import to work, you must have "src" in your path, not "gen_py/lib".

When processing an import like <code>import gen_py.lib</code>, it looks for a module <code>gen_py</code>, then looks for a submodule <code>lib</code>.

As the module <code>gen_py</code> won't be in "../gen_py/lib" (it'll be in ".."), the path you added will do nothing to help the import process.

Depending on where you're running it from, try adding the relative path to the "src" folder. Perhaps it's <code>sys.path.append('..')</code>. You might also have success running the script while inside the src folder directly, via relative paths like <code>python main/MyServer.py</code>

blocks|key|412520|text|from+..gen_py.lib+import+MyService|type|code-block|depth|inlineStyleRanges|entityRanges|data|syntax|javascript|412521|或|unstyled|412522|from+main.gen_py.lib+import+MyService|412523|确保每个目录上都有一个(至少是空的)+__init__.py文件。|offset|length|style|CODE|412524|entityMap^0|0|0|0|J|B|0^^$0|@$1|2|3|4|5|6|7|Q|8|@]|9|@]|A|$B|C]]|$1|D|3|E|5|F|7|R|8|@]|9|@]|A|$]]|$1|G|3|H|5|6|7|S|8|@]|9|@]|A|$B|C]]|$1|I|3|J|5|F|7|T|8|@$K|U|L|V|M|N]]|9|@]|A|$]]|$1|O|3|-4|5|F|7|W|8|@]|9|@]|A|$]]]|P|$]]

<pre><code>from ..gen_py.lib import MyService
</code></pre>

or

<pre><code>from main.gen_py.lib import MyService
</code></pre>

Make sure you have a (at least empty) <code>__init__.py</code> file on each directory.

blocks|key|410146|text|您对sys.path的修改假定当前工作目录始终位于main/中。事实并非如此。相反，只需将父目录添加到sys.path|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|410147|import+sys
import+os.path

sys.path.append(os.path.join(os.path.dirname(__file__),+'..'))
import+gen_py.lib|code-block|syntax|javascript|410148|不要忘记在gen_py和lib中包含一个文件Python+-否则，它们不会被识别为Python模块。|410149|entityMap^0|2|8|P|5|1F|8|0|0|0^^$0|@$1|2|3|4|5|6|7|O|8|@$9|P|A|Q|B|C]|$9|R|A|S|B|C]|$9|T|A|U|B|C]]|D|@]|E|$]]|$1|F|3|G|5|H|7|V|8|@]|D|@]|E|$I|J]]|$1|K|3|L|5|6|7|W|8|@]|D|@]|E|$]]|$1|M|3|-4|5|6|7|X|8|@]|D|@]|E|$]]]|N|$]]

Your modification of <code>sys.path</code> assumes the current working directory is always in <code>main/</code>. This is not the case. Instead, just add the parent directory to <code>sys.path</code>:

<pre><code>import sys
import os.path

sys.path.append(os.path.join(os.path.dirname(__file__), '..'))
import gen_py.lib
</code></pre>

Don't forget to include a file <code>__init__.py</code> in gen_py and lib - otherwise, they won't be recognized as Python modules.

blocks|key|3247229|text|确保包含__init__.py，这使Python知道这些目录包含包|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|3247230|entityMap^0|4|B|0^^$0|@$1|2|3|4|5|6|7|H|8|@$9|I|A|J|B|C]]|D|@]|E|$]]|$1|F|3|-4|5|6|7|K|8|@]|D|@]|E|$]]]|G|$]]

make sure to include <code>__init__.py</code>, which makes Python know that those directories containpackages

blocks|key|3247247|text|这是如果您正在构建一个包，并且在导入中发现错误。我了解到，硬way.The的答案不是将包添加到python路径中，也不是通过编程来完成(如果您的模块安装完成后，您的命令再次添加它，该怎么办？)这是一种不好的方式。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|3247248|正确的做法是:+1)使用virtualenv+pyvenv-3.4或类似的工具2)激活开发模式-+$python+setup.py+develop|3247249|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|F|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|G|8|@]|9|@]|A|$]]|$1|D|3|-4|5|6|7|H|8|@]|9|@]|A|$]]]|E|$]]

This is if you are building a package and you are finding error in imports. I learnt it the hard way.The answer isn't to add the package to python path or to do it programatically (what if your module gets installed and your command adds it again?) thats a bad way. 

The right thing to do is:
1) Use virtualenv pyvenv-3.4 or something similar
2) Activate the development mode - $python setup.py develop

blocks|key|3247260|text|确保根项目目录出现在sys.path输出中。如果没有，请将根项目目录的路径添加到sys.path中。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|3247261|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|D|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|E|8|@]|9|@]|A|$]]]|C|$]]

Make sure if root project directory is coming up in sys.path output.
If not, please add path of root project directory to sys.path.

I have a python application with the following directory structure:

<pre><code>src
 |
 +---- main
 |
 +---- util
 |
 +---- gen_py
 |
 +---- lib
</code></pre>

In the package main, I have a python module named MyServer.py which has an import statement like: 

<pre><code>from gen_py.lib import MyService
</code></pre>

In order for this statement to work, I placed the following line at the beginning of MyServer.py:

<pre><code>import sys
sys.path.append('../gen_py/lib')
</code></pre>

When I run MyServer.py in the terminal, I get the following error:

<blockquote>
 ImportError: No module named gen_py.lib
</blockquote>

What I am missing here?

ImportError: No module named - Python

Python

我有一个python应用程序，它的目录结构如下：src | +---- main | +---- util | +---- gen_py         |         +---- lib在主包中，我有一个名为MyServer.py的python模块，它有一个导入语句，如下所示：from gen_py.lib im...

问ImportError:没有命名为Python的模块
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