N/A wrote:Hi all,
I am learning Python. Just wondering how to clear saved memory in
Python? Like in Matlab I can simply use 'clear all' to clear all saved
memory.
You don't - python does it for you. It is called garbage collection. All you
have to to is get into granny-mode(tm): forget about things. That means:
once an object is not referenced by your code anymore, it will be cleaned
up.
I think Matlab's 'clear all' is more like what you might call 'del all'
in python.
You could perhaps define it like this:
def clearall():
all = [var for var in globals() if var[0] != '_']
for var in all:
del globals()[var]
This deletes any global not starting with an _, since it's probably
inadvisable to delete this lot:
{'__builtins__': <module '__builtin__' (built-in)>, '__file__':
'/etc/pythonstart', '__name__': '__main__', '__doc__': None}
More correct I suppose might be something like this:
def clearall():
all = [var for var in globals() if '__' not in (var[:2], var[-2:])]
for var in all:
del globals()[var]
since I think magic things always start and end with __.
Looking briefly at GNU octave which is similar to MatLab, clear all may
also del all the locals; so you can do something similar with the
builtin function locals().
- Selling Computer Clear Memory
- Cleaning Memory Image Files
- How To Clear Memory Cache
- Clear Up Memory Space
When I create the notebook,it will be made mess by me sometimes.If I use Remove to remove those variables,the memory cannot release still.So I have to close this mess notebook and restart the MMA to create another new notebook.I want to find way by programal method to avoid restarting the MMA,which can remove all of the variable and can release the memory. Clear all and clear. are synonyms. They remove all data, value labels, matrices, scalars, constraints, clusters, stored results, sersets, and Mata functions and objects from memory. They also close all open files and postfiles, clear the class system, close any open Graph windows and dialog.
Like every operating system, Windows also stores different kinds of cache files on the hard drive. In simple words, cache files are temporary files that are stored on the memory to make it easier for you to access frequently used data. The cache data utilize lots of hard drive space of your computer. Deleting cache files is necessary for the smooth running of the system. Cache memory is responsible for various kinds of computer problems, including slow processing speed, slow startup, lag or hang, application responding, and many others. If you don't know how to clear memory cache on your Windows computer then, the solution to your problem is here. Here in this post, we will talk about How to clear memory cache on Windows computers.
5 Ways to Clear Memory Cache on Windows 10/8/7/Vista/XP
It is necessary to clear cache the memory to fully utilize your CPU power. Cache memory causes lots of problems by occupying a huge amount of computer RAM (Random Access Memory). That's why it is always recommended to clearing memory cache from your Windows computer to get optimum performance. Cache memory is something that is really useful to give you better performance. It helps the application to load faster as compared to load the app without cache data. Here below are some methods that will help you to clear memory cache in Windows 10/8/7/Vista/ and XP.
Method 1: Create Clear Memory Cache Shortcut
This is one of the easiest solutions to clear memory cache on the Windows operating system. This method is completely free; you don't have to install any third-party paid tool to clear the memory cache. Below are some steps to clear memory cache on Windows.
Step 1: First of all, you have to turn on your computer and right-click on the desktop.
Step 2: Here, you will have a couple of options. Click on 'Shortcut' under the New option.
Step 3: Create a Shortcut wizard will appear, you have to click Browse to locate the directory. Or you can simply type '%windir%system32rundll32.exe advapi32.dll, ProcessIdleTasks' without quotes on the text field of 'Type the location of the item'.
Step 4: Once the above process is completed, you have to click on 'Next' button to proceed to the next step.
Step 5: Now, you have to type a name for this shortcut. Here, we are typing 'Clear Unused RAM' and hit on the 'Next' button.
Once the shortcut is created, switch to the desktop and double-click on the shortcut to clear memory cache on Windows.
Method 2: Clear General Cache
Disk Cleanup is an integrated feature of Microsoft Windows that enables the user to clean unwanted files. Getting engaging with this feature, you can remove temporary files, unwanted files, preview windows installation files, and much more. You just have to choose the disk and start the deleting process. Here below are steps to clear the memory cache using disk cleanup.
Step 1: At the first step, you have to click on the 'Start' button and type 'disk cleanup' in the search field and hit the 'Enter' button.
Step 2: Now, Disk Cleanup: Drive Selection dialog box will appear. You have to choose the drive from where you would like to clear the memory cache.
Step 3: Now, click on the 'OK' button. It will start the scanning process and shows you how much space is occupied by the cache.
Step 4: You have to tick the checkbox which you would like to clean. If you want to clean system files then, you can click on the 'Clean up system files' otherwise, hit on the 'OK' button at the bottom of the window.
Step 5: Once the above process is completed, you can click on 'Delete Files' if prompted. It will start deleting cache files from places including recycling bin, Thumbnails, and many other places.
Method 3: Clear App Data File to Clear Memory Cache
Step 1: At the first step, you have to click on the 'Start' button or hit on the 'Windows' key and click on 'Computers' to open My Computer.
Step 2: My Computer window will appear; if you don't see My Computer, then manually type 'My Computer' in the start and hit the 'Enter' button.
Step 3: Once the above process is completed, you have to click on the 'Organize' tab in the top left corner of the window.
Step 4: Then, choose 'Folder and search options' under the organize drop-down menu.
Step 5: a Folder options dialog box will appear with 3 tabs; click on the view tab.
Step 6: Now, you have to click on 'Show Hidden files, folder, and drives' radio button under the 'Hidden files and folders'.
Step 7: Click on the 'OK' button at the button of the window.
Step 8: Once the above process is successfully completed, you have to open the hard disk where windows are installed.
Step 9: Now, you have to open the 'Users' folder by double-clicking on it. Then, click on the folder with an administrator account.
Step 10: You have to locate the 'AppData' folder and open it by double-clicking and open the 'Local' folder.
Step 11: Now, you have to select the 'Temp' folder and open it.
Step 12: Remove the read-only permissions from the Temp folder.
Selling Computer Clear Memory
Step 13: You have to select all files that are placed in the Temp folder. You can press 'Ctrl' + 'A' to select all files.
Step 14: Once the files are selected, Press 'Shift' + 'Delete' button simultaneously to permanently delete all temp files.
Method 4: Delete Internet Explorer Files to Clear Memory Cache
Step 1: First of all, click on the 'Start' button and type 'Internet Explorer' in the text field and press the 'Enter' button.
Step 2: Internet Explorer web browser window will appear, you have to click on the 'General' tab at the top of the window.
Step 3: Now, you have to click on the 'Settings' under the browsing history section.
Step 4: Then, click on 'View files' at the screen's bottom right side. Once the above process is completed, a new window will appear with all cached files created by Internet Explorer.
Cleaning Memory Image Files
Step 5: You have to press the 'Ctrl' + 'A' button simultaneously to select all the cache files.
Step 6: Now, you have to press the 'Shift' + 'Delete' button to remove all cached files permanently.
Method 5: Clear the DNS Cache
Step 1: Initially, you have to click on the 'Start' menu by clicking on the Start button at the bottom left of the screen.
Step 2: Now, type command prompt and hit the Enter button to launch. You can also open a command prompt by right click on Command prompt and run as administrator.
Step 3: On the command prompt, you have to type 'ipconfig /flushdns' without quotes and press the'Enter' button.
How To Clear Memory Cache
Step 4: You have to wait for a couple of seconds and be notified when completed. Once it is successfully completed, you have to restart your computer to makes changes.
Clear Up Memory Space