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#: ../../tutorial/venv.rst:6
msgid "Virtual Environments and Packages"
msgstr "虛擬環境與套件"

#: ../../tutorial/venv.rst:9
msgid "Introduction"
msgstr "簡介"

#: ../../tutorial/venv.rst:11
msgid ""
"Python applications will often use packages and modules that don't come as "
"part of the standard library.  Applications will sometimes need a specific "
"version of a library, because the application may require that a particular "
"bug has been fixed or the application may be written using an obsolete "
"version of the library's interface."
msgstr ""
"Python 應用程式通常會用到不在標準函式庫的套件和模組。應用程式有時候會需要某個"
"特定版本的函式庫，因為這個應用程式可能需要某個特殊的臭蟲修正，或是這個應用程"
"式是根據該函式庫特定版本的介面所撰寫。"

#: ../../tutorial/venv.rst:17
msgid ""
"This means it may not be possible for one Python installation to meet the "
"requirements of every application.  If application A needs version 1.0 of a "
"particular module but application B needs version 2.0, then the requirements "
"are in conflict and installing either version 1.0 or 2.0 will leave one "
"application unable to run."
msgstr ""
"這意味著不太可能安裝一套 Python 就可以滿足所有應用程式的要求。如果應用程式 A "
"需要一個特定的模組的 1.0 版，但另外一個應用程式 B 需要 2.0 版，那麼這整個需求"
"不管安裝 1.0 或是 2.0 都會衝突，以致於應用程式無法使用。"

#: ../../tutorial/venv.rst:23
msgid ""
"The solution for this problem is to create a :term:`virtual environment`, a "
"self-contained directory tree that contains a Python installation for a "
"particular version of Python, plus a number of additional packages."
msgstr ""
"解決方案是創建一個\\ :term:`虛擬環境（virtual environment） <virtual "
"environment>`，這是一個獨立的資料夾，並且裡面裝好了特定版本的 Python，以及一"
"系列相關的套件。"

#: ../../tutorial/venv.rst:27
msgid ""
"Different applications can then use different virtual environments. To "
"resolve the earlier example of conflicting requirements, application A can "
"have its own virtual environment with version 1.0 installed while "
"application B has another virtual environment with version 2.0. If "
"application B requires a library be upgraded to version 3.0, this will not "
"affect application A's environment."
msgstr ""
"不同的應用程式可以使用不同的虛擬環境。以前述中需要被解決的例子中，應用程式 A "
"能夠擁有它自己的虛擬環境，並且是裝好 1.0 版，然而應用程式 B 則可以是用另外一"
"個有 2.0 版的虛擬環境。要是應用程式 B 需要某個函式庫被升級到 3.0 版，這並不會"
"影響到應用程式 A 的環境。"

#: ../../tutorial/venv.rst:36
msgid "Creating Virtual Environments"
msgstr "建立虛擬環境"

#: ../../tutorial/venv.rst:38
msgid ""
"The module used to create and manage virtual environments is called :mod:"
"`venv`.  :mod:`venv` will usually install the most recent version of Python "
"that you have available. If you have multiple versions of Python on your "
"system, you can select a specific Python version by running ``python3`` or "
"whichever version you want."
msgstr ""
"用來建立與管理虛擬環境的模組叫做 :mod:`venv`。:mod:`venv` 通常會安裝你能夠取"
"得的最新版本的 Python。要是你的系統有不同版本的 Python，你可以透過 "
"``python3`` 這個指令選擇特定或是任意版本的 Python。"

#: ../../tutorial/venv.rst:44
msgid ""
"To create a virtual environment, decide upon a directory where you want to "
"place it, and run the :mod:`venv` module as a script with the directory "
"path::"
msgstr ""
"在建立虛擬環境的時候，在你決定要放該虛擬環境的資料夾之後，在 script 中執行 :"
"mod:`venv` 模組並且給定資料夾 path：\n"
"\n"
"::"

#: ../../tutorial/venv.rst:49
msgid ""
"This will create the ``tutorial-env`` directory if it doesn't exist, and "
"also create directories inside it containing a copy of the Python "
"interpreter, the standard library, and various supporting files."
msgstr ""
"如果 ``tutorial-env`` 不存在的話，這會建立 ``tutorial-env`` 資料夾，並且也會"
"在裡面建立一個有 Python 直譯器的複本、標準函式庫、以及不同的支援檔案的資料"
"夾。"

#: ../../tutorial/venv.rst:53
msgid ""
"A common directory location for a virtual environment is ``.venv``. This "
"name keeps the directory typically hidden in your shell and thus out of the "
"way while giving it a name that explains why the directory exists. It also "
"prevents clashing with ``.env`` environment variable definition files that "
"some tooling supports."
msgstr ""

#: ../../tutorial/venv.rst:59
msgid "Once you've created a virtual environment, you may activate it."
msgstr "一旦你建立了一個虛擬環境，你可以啟動他。"

#: ../../tutorial/venv.rst:61
msgid "On Windows, run::"
msgstr ""
"在 Windows 系統中，使用：\n"
"\n"
"::"

#: ../../tutorial/venv.rst:65
msgid "On Unix or MacOS, run::"
msgstr ""
"在 Unix 或 MacOS 系統，使用：\n"
"\n"
"::"

#: ../../tutorial/venv.rst:69
msgid ""
"(This script is written for the bash shell.  If you use the :program:`csh` "
"or :program:`fish` shells, there are alternate ``activate.csh`` and "
"``activate.fish`` scripts you should use instead.)"
msgstr ""
"（這段程式碼適用於 bash shell。如果你是用 :program:`csh` 或者 :program:"
"`fish` shell，應當使用替代的 ``activate.csh`` 與 ``activate.fish`` 腳本。）"

#: ../../tutorial/venv.rst:74
msgid ""
"Activating the virtual environment will change your shell's prompt to show "
"what virtual environment you're using, and modify the environment so that "
"running ``python`` will get you that particular version and installation of "
"Python. For example:"
msgstr ""
"啟動虛擬環境會改變你的 shell 提示字元來顯示你正在使用的虛擬環境，並且修改環境"
"以讓你在執行 ``python`` 的時候可以得到特定的 Python 版本，例如說："

#: ../../tutorial/venv.rst:93
msgid "Managing Packages with pip"
msgstr "用 pip 管理套件"

#: ../../tutorial/venv.rst:95
msgid ""
"You can install, upgrade, and remove packages using a program called :"
"program:`pip`.  By default ``pip`` will install packages from the Python "
"Package Index, <https://pypi.org>.  You can browse the Python Package Index "
"by going to it in your web browser, or you can use ``pip``'s limited search "
"feature:"
msgstr ""
"你可以使用一個叫做 :program:`pip` 的程式來安裝、升級和移除套件。``pip`` 預設"
"會從 Python Package Index  <https://pypi.org> 安裝套件。你可以透過你的瀏覽器"
"瀏覽 Python Package Index，或是使用 ``pip`` 的限定搜索功能："

#: ../../tutorial/venv.rst:111
msgid ""
"``pip`` has a number of subcommands: \"search\", \"install\", \"uninstall\", "
"\"freeze\", etc.  (Consult the :ref:`installing-index` guide for complete "
"documentation for ``pip``.)"
msgstr ""
"``pip`` 有好幾個子指令：\"search\"、\"install\"、\"uninstall\"、\"freeze\" 等"
"等。（這可以參考\\ :ref:`installing-index`\\ 說明書來取得 ``pip`` 的完整文件"
"說明。）"

#: ../../tutorial/venv.rst:115
msgid ""
"You can install the latest version of a package by specifying a package's "
"name:"
msgstr "你可以透過指定套件名字來安裝最新版本的套件："

#: ../../tutorial/venv.rst:126
msgid ""
"You can also install a specific version of a package by giving the package "
"name  followed by ``==`` and the version number:"
msgstr "你也可以透過在套件名稱之後接上 ``==`` 和版號來指定特定版本："

#: ../../tutorial/venv.rst:137
msgid ""
"If you re-run this command, ``pip`` will notice that the requested version "
"is already installed and do nothing.  You can supply a different version "
"number to get that version, or you can run ``pip install --upgrade`` to "
"upgrade the package to the latest version:"
msgstr ""
"要是你重新執行此指令，``pip`` 會知道該版本已經安裝過，然後什麼也不做。你可以"
"提供不同的版本號碼來取得該版本，或是可以執行 ``pip install --upgrade`` 來把套"
"件升級到最新的版本："

#: ../../tutorial/venv.rst:152
msgid ""
"``pip uninstall`` followed by one or more package names will remove the "
"packages from the virtual environment."
msgstr "``pip uninstall`` 後面接一個或是多個套件名稱可以從虛擬環境中移除套件。"

#: ../../tutorial/venv.rst:155
msgid "``pip show`` will display information about a particular package:"
msgstr "``pip show`` 可以顯示一個特定套件的資訊："

#: ../../tutorial/venv.rst:172
msgid ""
"``pip list`` will display all of the packages installed in the virtual "
"environment:"
msgstr "``pip list`` 會顯示虛擬環境中所有已經安裝的套件："

#: ../../tutorial/venv.rst:184
msgid ""
"``pip freeze`` will produce a similar list of the installed packages, but "
"the output uses the format that ``pip install`` expects. A common convention "
"is to put this list in a ``requirements.txt`` file:"
msgstr ""
"``pip freeze`` 可以複製一整個已經安裝的套件清單，但是輸出使用 ``pip "
"install`` 可以讀懂的格式。一個常見的慣例是放這整個清單到一個叫做 "
"``requirements.txt`` 的檔案："

#: ../../tutorial/venv.rst:196
msgid ""
"The ``requirements.txt`` can then be committed to version control and "
"shipped as part of an application.  Users can then install all the necessary "
"packages with ``install -r``:"
msgstr ""
"``requirements.txt`` 可以提交到版本控制，並且作為釋出應用程式的一部分。使用者"
"可以透過 ``install -r`` 安裝對應的的套件："

#: ../../tutorial/venv.rst:213
msgid ""
"``pip`` has many more options.  Consult the :ref:`installing-index` guide "
"for complete documentation for ``pip``.  When you've written a package and "
"want to make it available on the Python Package Index, consult the :ref:"
"`distributing-index` guide."
msgstr ""
"``pip`` 還有更多功能。可以參考\\ :ref:`installing-index`\\ 說明書來取得完整"
"的 ``pip`` 參考資料。當你撰寫了一個套件並且想要讓它可以在 Python Package "
"Index 上可以取得的話，可以參考\\ :ref:`distributing-index`\\ 說明。"