python __main__.py relative import

3/8/2017 · run foo.py as a script and execute the sample usage or tests from the __main__ section. use Python 2.5 How do we have to do the import in foo.py in order to be sure it will work in all these cases.

if __name__ == 『__main__』:  import os, sys  foo_dir = os.path.dirname(os.path.join(os.getcwd(), __file__))  sys.path.append(os.path.normpath(os.path.join(foo_dir, 『..』, 『..』)))  from mypackage import barSee more on stackoverflow這對您是否有幫助?謝謝! 提供更多意見反應

Everyone seems to want to tell you what you should be doing rather than just answering the question. The problem is that you’re running the module as 『__main__』 by passing the mod1.py as an argument to the interpreter. From PEP 328: Relative imports use a

30/10/2017 · # 不標準的 implicit relative import 寫法(Python 3 不支援) from sample_module import sample_func 1. 成功印出 Hello! 2. ModuleNotFoundError。因為 Python 3 不支援 implicit relative import (前面不加點的寫法),故會將之當作 absolute import,但第三個

作者: Rachel Liao

23/6/2019 · ImportError: attempted relative import with no known parent package – part 2 How the python interpreter resolve relative imports? Let’s see how python interpreter resolve relative module. From PEP 328 — Imports: Multi-Line and Absolute/Relative which introduce the

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1/3/2016 · One of the first items you learn as a beginner Python programmer is how to import other modules or packages. Also note that if you were to add an “if __name__ == ‘__main__’” portion to the module_x.py and tried to run it, you would end up with a rather from

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関連記事: Pythonでimportの対象ディレクトリのパスを確認・追加(sys.path pwd # /Users/mbp/Documents/my-project/python-snippets/notebook/dir_import_test python3 dir/main_relative.py # Traceback (most recent call last): # File 「dir/main_relative.py」, line 1,

15/1/2018 · 最近在帮一个伙伴debug的时候发现,在一个package的内部,直接run一个.py文件,会报错说ValueError: Attempted relative import in non-package。 原来这是因为,当我run的这个.py文件,如果它在某个package的文件夹下,而且这个.py文件夹内有诸如:

9/6/2017 · Pythonのimportに関しての個人的メモ。 間違っている点や他の躓きどころがあればコメント・PRをお願いします。 package内のimportにimplicit relative importは使えない Python3以降の話。 例

1/3/2016 · One of the first items you learn as a beginner Python programmer is how to import other modules or packages. Also note that if you were to add an “if __name__ == ‘__main__’” portion to the module_x.py and tried to run it, you would end up with a rather from

27/1/2013 · * Changing the `all_imported_modules_in_file(self, file)` projection in build which gathers imports from file ASTs root nodes. * Adding support for the relative import syntax in noderepr.py and output.py. * Adding a relative counter int to the AST nodes and fixing up

The 2 code pieces above is the only way of doing so-called relative import because since Python 3 all imports are absolute by default . pizzapy __init__.py __main__.py menu.py pizza.py pizzashop __init

我们执行 python -c 「import a.b.c」 ,输出结果: a a.b a.b.c 由此可见,__name__ 可以清晰的反映一个模块在包中的层次。其实,所谓模块名就是 import 时需要用到的名字,例如

19/9/2018 · If you’ve worked on a Python project that has more than one file, chances are you’ve had to use an import statement before. In this tutorial, you’ll not only cover the pros and cons of absolute and relative imports but also learn about the best practices for writing

# other.py from cool import cool_func print (『Call it remotely』) cool_func 當你執行 other.py 時,你應該預期只會看到 Call it remotely 與 cool_func(): Super Cool!

这个错误之前也遇到过 http://i.cnblogs.com/EditPosts.aspx?postid=4030852 包含相对路径import 的python脚本不能直接运行,只能作为module被引用。 如果想运行的话,需要

最初的做法,我在 hhlb 的同级目录中放了一个 build.py 文件,在这个文件中 import hhlb 这个 package ,使用其功能。 默认的,python 解释器将 __main__.py 的当前路径 hhlb 加入 sys.path 中,然后在这个路径下面寻找 hhlb 这个模块。

当运行python area.py,因为导入了const ,输出 PI: 3.14 round area: 12.56 可以看到 const.py里面的main()也被执行了 但这是我们所不希望的

For a package, the same effect can be achieved by including a __main__.py module, the contents of which will be executed when the module is run with -m. Previous topic builtins — Built-in objects Next topic warnings — Warning control

这个错误之前也遇到过 http://i.cnblogs.com/EditPosts.aspx?postid=4030852 包含相对路径import 的python脚本不能直接运行,只能作为module被引用。 如果想运行的话,需要

ValueError: Attempted relative import in non-package 如果是绝对导入,一个模块只能导入自身的子模块或和它的顶层模块同级别的模块及其子模块

It depends on how you want to launch your script. If you want to launch your UnitTest from the command line in a classic way, that is: python tests/core_test.py Then, since in this case ‘components’ and ‘tests’ are siblings folders, you can import the relative module

前言 在这篇文章中,我将会解析 ImportError: attempted relative import with no known parent package 这个异常的原因。当你在运行的python脚本。使用了相对引用方式 (类似import ..module) 去引用包时,可能会出现这个异常。 让我们来看看发生这个异常的例子。

我们执行 python -c 「import a.b.c」 ,输出结果: a a.b a.b.c 由此可见,__name__ 可以清晰的反映一个模块在包中的层次。其实,所谓模块名就是 import 时需要用到的名字,例如

19/9/2018 · If you’ve worked on a Python project that has more than one file, chances are you’ve had to use an import statement before. In this tutorial, you’ll not only cover the pros and cons of absolute and relative imports but also learn about the best practices for writing

I’ve almost never been able to write correct Python import statements on the first go. Behavior is inconsistent between is a Python package. This file can be empty. For example, when running Python 2.7, start.py can import the package packA but not packB

モジュールとは Pythonのコードはスクリプトファイルとして保存し、他のプログラムから再利用することができます。そのファイルのことをモジュールといいます。Pythonで標準ライブラリを読み込む際に「import」を使いますが、自作したモジュールも

5/7/2016 · Python 3でのファイルのimport のしかたまとめ Python Python3 307 More than 3 years have passed since last update. 同じディレクトリにあるファイル

This is because the use of dots in a relative import are used to strip away parts of the calling module’s name to calculate where in the package hierarchy an import should fall

When you execute a package (e.g. python -m my_package) it executes the __main__.py file. When you import a module it runs the entire file from top to bottom.

Pythonでは拡張子が「py,pyc,pyo 」のファイルをモジュールとして読み込むことができます。 備考 バイトコンパイルについて Relative import 相対インポート は同一パッケージを基点としたモジュールのインポートです

此篇將會從基本module和package介紹起,提點基本import語法及absolute import和relative import的用法與差異,最後舉出幾個常見因為錯誤import

Python will execute the code in __main__.py as this file is an entry point. You can also zip the folder python -m zipfile -c myproject.zip myprojectfolder YES Python can Zip files and folders! and now you can get rid of myprojectfolder source code and run binary

Relative import (Case 1) 於是當然是用relative import 解決啊,不然要幹嘛? 把整個directory變成module:. __init__.py file_a.py file_b.py

python script relative import (13) This is unfortunately a sys.path hack, but it works quite well. I encountered this problem with another layer: I already had a module of the specified name, but it

据此我猜测执行python m1.py命令后,当前目录所代表的包』.’变成了__main 问题1描述:ValueError: attempted relative import beyond top-level package 。直面问题的第一步是去了解熟悉它,最好是能复现它,让它躺在两跨之间任我们去践踏蹂躏。仍然是上面四

我唯一的疑惑,怎么让命令行python fibo.py 50返回的值是fib2(50)的值。 追答 命令行返回就是输出: if __name__ == 「__main__」: import sys print fib2(int(sys.argv[1]))

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今天小编就为大家分享一篇Python 从相对路径下import 的方法,具有很好的参考价值,希望对大家有所帮助。一起跟随小编过来看看吧 .some_lib import something,仅仅在package中加上__init__.py是不够的。python会返回ValueError: Attempted relative 这个

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23/3/2015 · In this video, we will take a look at a common conditional statement in Python: if __name__ == 『__main__』: This conditional is used to check whether a python

作者: Corey Schafer