Check For Libraries Mac

Check For Libraries Mac 3,5/5 9504 votes
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Bob Savage <bobsavage@mac.com>

The way libraries are chosen during compilation is designed to allow the update of libraries present in the distribution. This means that placing a library in the “libraries” folder in your sketchbook overrides the other libraries versions. The same happens for the libraries present in additional cores installations. 2014-5-8  Hi MilindDynamic libraries not enabled: check your lua installation From 1: the message 'dynamic libraries not enabled' comes from the fallback code in loadlib.c and this code should not be reached if LUAUSEDLOPEN is defined. I use LUAUSELINUX on OSX, but using LUAUSEDLOPEN should be sufficient 2. 2019-6-25  编译PCL的时候,cmake的时候出现cannot find Boost libraries system filesystem thread datetime iostreams ch. Mac 安装caffe 第一步就是安装 homebrew 接下来安装caffe 依赖 按照官网:brew install -vd snapp. 2020-3-31  How to use multiple photo libraries with Photos for Mac. Photos for Mac lets you work with multiple libraries. Learn how to choose a default library, open another library, and merge multiple. Check in and out. Check out or check in files in a document library. Top questions about check out, check in, and versions. Add and delete files and folders. Edit a document in a document library. Delete a file, folder, or link from a SharePoint document library. Create an alert to get notified when a file or folder changes in SharePoint.

Python on a Macintosh running Mac OS X is in principle very similar to Python onany other Unix platform, but there are a number of additional features such asthe IDE and the Package Manager that are worth pointing out.

4.1. Getting and Installing MacPython¶

Mac OS X 10.8 comes with Python 2.7 pre-installed by Apple. If you wish, youare invited to install the most recent version of Python 3 from the Pythonwebsite (https://www.python.org). A current “universal binary” build of Python,which runs natively on the Mac’s new Intel and legacy PPC CPU’s, is availablethere.

What you get after installing is a number of things:

  • A Python3.8 folder in your Applications folder. In hereyou find IDLE, the development environment that is a standard part of officialPython distributions; PythonLauncher, which handles double-clicking Pythonscripts from the Finder; and the “Build Applet” tool, which allows you topackage Python scripts as standalone applications on your system.

  • A framework /Library/Frameworks/Python.framework, which includes thePython executable and libraries. The installer adds this location to your shellpath. To uninstall MacPython, you can simply remove these three things. Asymlink to the Python executable is placed in /usr/local/bin/.

The Apple-provided build of Python is installed in/System/Library/Frameworks/Python.framework and /usr/bin/python,respectively. You should never modify or delete these, as they areApple-controlled and are used by Apple- or third-party software. Remember thatif you choose to install a newer Python version from python.org, you will havetwo different but functional Python installations on your computer, so it willbe important that your paths and usages are consistent with what you want to do.

IDLE includes a help menu that allows you to access Python documentation. If youare completely new to Python you should start reading the tutorial introductionin that document.

If you are familiar with Python on other Unix platforms you should read thesection on running Python scripts from the Unix shell.

4.1.1. How to run a Python script¶

Your best way to get started with Python on Mac OS X is through the IDLEintegrated development environment, see section The IDE and use the Help menuwhen the IDE is running.

If you want to run Python scripts from the Terminal window command line or fromthe Finder you first need an editor to create your script. Mac OS X comes with anumber of standard Unix command line editors, vim andemacs among them. If you want a more Mac-like editor,BBEdit or TextWrangler from Bare Bones Software (seehttp://www.barebones.com/products/bbedit/index.html) are good choices, as isTextMate (see https://macromates.com/). Other editors includeGvim (http://macvim-dev.github.io/macvim/) and Aquamacs(http://aquamacs.org/).

To run your script from the Terminal window you must make sure that/usr/local/bin is in your shell search path.

To run your script from the Finder you have two options:

  • Itunes library is locked on a locked disk. Drag it to PythonLauncher

  • Select PythonLauncher as the default application to open yourscript (or any .py script) through the finder Info window and double-click it.PythonLauncher has various preferences to control how your script islaunched. Option-dragging allows you to change these for one invocation, or useits Preferences menu to change things globally.

4.1.2. Running scripts with a GUI¶

With older versions of Python, there is one Mac OS X quirk that you need to beaware of: programs that talk to the Aqua window manager (in other words,anything that has a GUI) need to be run in a special way. Use pythonwinstead of python to start such scripts.

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With Python 3.8, you can use either python or pythonw.

4.1.3. Configuration¶

Python on OS X honors all standard Unix environment variables such asPYTHONPATH, but setting these variables for programs started from theFinder is non-standard as the Finder does not read your .profile or.cshrc at startup. You need to create a file~/.MacOSX/environment.plist. See Apple’s Technical Document QA1067 fordetails.

For more information on installation Python packages in MacPython, see sectionInstalling Additional Python Packages.

4.2. The IDE¶

MacPython ships with the standard IDLE development environment. A goodintroduction to using IDLE can be found athttp://www.hashcollision.org/hkn/python/idle_intro/index.html.

4.3. Installing Additional Python Packages¶

There are several methods to install additional Python packages:

  • Packages can be installed via the standard Python distutils mode (pythonsetup.pyinstall).

  • Many packages can also be installed via the setuptools extensionor pip wrapper, see https://pip.pypa.io/.

4.4. GUI Programming on the Mac¶

There are several options for building GUI applications on the Mac with Python.

PyObjC is a Python binding to Apple’s Objective-C/Cocoa framework, which isthe foundation of most modern Mac development. Information on PyObjC isavailable from https://pypi.org/project/pyobjc/.

Check

The standard Python GUI toolkit is tkinter, based on the cross-platformTk toolkit (https://www.tcl.tk). An Aqua-native version of Tk is bundled with OSX by Apple, and the latest version can be downloaded and installed fromhttps://www.activestate.com; it can also be built from source.

wxPython is another popular cross-platform GUI toolkit that runs natively onMac OS X. Packages and documentation are available from https://www.wxpython.org.

PyQt is another popular cross-platform GUI toolkit that runs natively on MacOS X. More information can be found athttps://riverbankcomputing.com/software/pyqt/intro.

4.5. Distributing Python Applications on the Mac¶

The “Build Applet” tool that is placed in the MacPython 3.6 folder is fine forpackaging small Python scripts on your own machine to run as a standard Macapplication. This tool, however, is not robust enough to distribute Pythonapplications to other users.

The standard tool for deploying standalone Python applications on the Mac ispy2app. More information on installing and using py2app can be foundat http://undefined.org/python/#py2app.

4.6. Other Resources¶

The MacPython mailing list is an excellent support resource for Python users anddevelopers on the Mac:

Another useful resource is the MacPython wiki:

With the upgrade to Photos, many Mac users have been left with a duplicate iPhoto library on their Macs. Here’s how to delete iPhoto library and clear out some clutter.

iPhoto used to be the standard photo editor and photo management system on Macs, at least for the average computer user. Like it or not, however, that all changed when Apple first introduced the software, nearly a year ago. If your Mac came from Apple with Photos already installed, you don’t need to worry about old iPhoto libraries.

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A Mac that was upgraded to a new version of OS X that added the Photos app, however, can end up with what look like duplicates of their photo libraries. The first time you start up Photos after upgrading, your Mac will copy over your photo library into the new software (if you explicitly set up more than one old iPhoto library, you’ll have to copy them over yourself). It doesn’t go back and delete the old one, though.

Here’s where things get a little bit confusing: you don’t actually have two copies of your photos. Thanks to the way OS X (the software that powers your Mac, like Windows powers a PC) works, your pictures aren’t actually stored in those libraries. Instead, they’re stored somewhere else on your hard drive, and each library has what Apple calls a “hard link” to the pictures. As a result, each library can access the photos, but store separate information about them. You can delete either library safely; only if you were to delete both libraries would you lose access to your pictures.

While having a second copy of your photo library doesn’t take up that much extra space on your computer, it can still be confusing – first of all, each library reports that it’s a certain size, which can make it difficult to figure out how much room is left on your Mac. Additionally, if you need to back things up, it can be hard to figure out where your files are.

Still with us? Let’s recap:

  • if you upgrade your Mac from iPhoto to Photos, you’ll get a second photo library
  • if you had multiple iPhoto libraries (you would know if you did), you’ll need to copy them into Photos manually
  • the libraries each link to a single copy of your photos, rather than storing each photo twice
  • it can appear that your libraries are taking up more space than they are, thanks to the way hard links work
  • you can safely delete either photo library – only if you delete both of them will you lose access to your photos

How to delete iPhoto library on your Mac

Now that you understand why you might want to delete an old iPhoto library, and why you don’t necessarily have to, let’s talk about how to actually do it.

Before you do anything like this on your Mac – that is, delete something potentially important – you should back up your software with something like Time Machine.

Read: How to Backup Your Mac with Time Machine

That way, if you accidentally delete something important, or something else goes wrong, you can always roll things back to how they were when you started. This is really easy, and there’s nothing to be concerned about; it’s just good practice to back things up (and keep them backed up) before you muck about in your computer.

First, you’ll need to open a Finder window: you can do this by clicking on the Finder icon (it looks like a square face) on the dock, or by clicking on your Mac’s desktop background and hitting ⌘+N (Command + N) on your keyboard.

Next, look at the left-hand column in the new window. You’ll see a list of locations around your Mac; find the one that says Pictures and click on it. You’ll be taken to that directory, which contains libraries for Apple’s image-related apps (Photos, iPhoto, Photo Booth, etc).

In the list of files on the right, scroll down and look for your iPhoto library – it’ll be a little iPhoto icon, and the name will read, unsurprisingly, iPhoto Library. Don’t worry about accidentally deleting your Photo Booth or Photos libraries; you’ll be able to see which one is which.

To actually delete the library, you can do one of three things:

  1. Click on the iPhoto Library listing, and without letting go of your mouse or trackpad button, drag it until it’s over top the Trash icon on your dock. Once you’re on top of the Trash, let go.
  2. You can select (click on) the iPhoto Library, then right-click on your mouse or Trackpad (Apple will call this Secondary Click in your Mouse or Trackpad settings). A new menu will pop up; find the entry that says Move to Trash and click on it.
  3. Finally, you can also delete your iPhoto Library by clicking on it and hitting ⌘+Delete (Command + Delete) on your keyboard.

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Read: How to uninstall apps on Mac OS X

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Now that you’ve gotten rid of your iPhoto library, it makes sense to completely uninstall iPhoto – that way you won’t accidentally create a new iPhoto Library and have to repeat all these steps. It’s as simple as opening up your Applications folder, and deleting iPhoto (using one of the three steps we just discussed). For a more in-depth look at how to uninstall apps on your Mac, be sure to check out our guide above!

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