- Your note is very true, so make sure you don't run more than one batch file in the same command-window. Close the command window and open a new one first. Roman Rubio Monday, December 15, 2008.
- Contexts 3 Radically simpler & faster window switcher Switch between application windows effortlessly — with Fast Search, a better Command-Tab, a Sidebar or even a quick gesture. Includes fantastic features for multiple spaces & multiple displays.
- Contexts 3 6 2 – Fast Window Switcher Systems Home Theater Systems
- Contexts 3 6 2 – Fast Window Switcher Systems Installation
- Contexts 3 6 2 – Fast Window Switcher Systems System
- Contexts 3 6 2 – Fast Window Switcher Systems Diagram
- Contexts 3 6 2 – Fast Window Switcher Systems Inc
- Contexts 3 6 2 – Fast Window Switcher Systems Inc
The release of Django 2.0 was a milestone in the history of Python since itcompletely dropped support for Python 2.x. I am a long time user of Djangoand, loyal to the philosophy of “if it is working don’t change” I was alwaysusing Python 2.x.
Fission 2 4 5 – streamlined audio editor download. Of course right now this needs to change since new applications will need tobe developed to the latest version of Django (and Python). I am usingWindows for development (almost exclusively) and what I wanted was tobe able to create and use virtual environments for both my old projects(using Python 2) and new projects (using Python 3).
The above requirement is not as straight-forward as I’d like - actually it isif you know what you need to do and which tools you must use. That’s why Idecided to write a quick step by step tutorial on how to use both versionsof Python in your Windows environment. Notice that I am using Windows 10,Python 2.7.14 an Python 3.6.4.
First of all, let’s download both versions of Pythonfrom the Python download page. I downloaded the filespython-2.7.14.msi and python-3.6.4.exe (not sure why the one is .msi and the otheris .exe it doesn’t matter anyway).
Context Switches.; 2 minutes to read; In this article. The scheduler maintains a queue of executable threads for each priority level. These are known as ready threads. When a processor becomes available, the system performs a context switch. The steps in a context switch are: Save the context of the thread that just finished executing.
Firstly I am installing Python 2.7.14 and selecting:
- Install for all users
- Install to default folder
- Press next to following screen (install default customizations)
- This won’t add the python.exe of Python 2.7 to path
Next I am install Python 3.6.4:
- Make sure to click “Install launcher for all users (recommended)”
- I also check “Add Python 3.6to PATH” (to add the Python 3.6 executable to path)
- I then just click “Install Now” (this will put Python 3.6 to c:)
Right now if you open a terminal window (Windows+r, cmd.exe) and run Python you willinitiate the Python 3.6 interpreter. This is useful for just dropping in a Python interpreter.
Remember the “Install launcher for all users (recommended)” we clicked before? This installsthe python launcher which is used to select between Python versions.If you run it without parameters the Python 3.6 interpreter will by started. You can passthe -2 parameter to start the python 2.x interpreter or -3 to explicitly declare thepython 3.x interpreter:
With py we can easily start the Python interpreter we want. This is not enough though - weneed to use virtualenv and create proper virtual environments for our projects. To do thisyou can add the -m option to py to run a module with the proper python version. For example,to start an http server with Python 2 you would use the module SimpleHTTPServer whilefor python 3 you would use http.server (as per this):
Now, to create the virtual environments we’ll use the virtualenv module which is installedby default in Python 2.x (try running py -2-m pip freeze to see the list of installedpackages for Python 2.x) and the venv module which is included in the Python 3.x core. Soto create a virtualenv for Python 2 we’ll run py -2-m virtualenv name-of-virtualenvand for Python 3 py -3-m venv name-of-virtualenv.
That’s how easy it is to have both Python 2.7 and Python 3.6 in your Windows!
Below is a listing of all the more commonly used Windows shortcut keys for every version of Microsoft Windows. If you are looking for shortcut keys related to programs in Windows, like Microsoft Word, Excel, Internet browsers, and others, see our 'Other computer keyboard shortcuts' page linked below.
General Windows keyboard shortcuts
Alt+Tab
Switch between open applications in all versions of Windows. Reverse the direction by pressing Alt+Shift+Tab at the same time.
Ctrl+Tab
Switches between program groups, tabs, or document windows in applications that support this feature. Reverse the direction by pressing Ctrl+Shift+Tab at the same time.
Alt+double-click
In Windows 95 or later, display the properties of the object you double-click. For example, doing this on a file would display its properties.
Alt+Print Screen
Create a screenshot only for the active program window in all versions of Windows. For example, if you opened the calculator and pressed these shortcut keys, only the calculator window would be created as a screenshot. If the Print Screen key is pressed alone, the whole screen will be made into a screenshot.
Ctrl+Alt+Del
Open the Windows option screen for locking computer, switching user, Task Manager, etc. in later versions of Windows. Pressing Ctrl+Alt+Del multiple times reboots the computer.
Ctrl+Shift+Esc
Immediately bring up the Windows Task Manager in Windows 2000 and later.
Ctrl+Esc
Open the Windows Start menu in most versions of Windows. In Windows 8, this opens the Start screen and in Windows 3.x, this opens the Task Manager.
Alt+Esc
Switch between open applications on Taskbar in Windows 95 and later.
Alt+Spacebar
Drops down the window control menu for the currently open Windows program in Windows 95 and later.
Alt+Enter
Opens properties window of selected icon or program in Windows 95 and later.
Shift+Del
Permanently delete any file or another object without throwing it into the Recycle Bin in Windows 95 and later.
Hold down the Shift key
When putting in an audio or data CD that uses Autoplay, holding down the Shift key prevents that CD from playing.
Windows function key shortcuts
Below is a listing of keyboard shortcuts that use the keyboard function keys. See our what are F1 through F12 keys page for a full listing of what function keys do with all other programs.
F1
Activates help for current open application. If you're at the Windows desktop, this activates the help for Windows.
F2
Renames a highlighted icon, file, or folder in all versions of Windows.
F3
Starts find or search when at the Windows desktop in all versions of Windows.
F4
![Contexts 3 6 2 – fast window switcher systems diagram Contexts 3 6 2 – fast window switcher systems diagram](https://static.macupdate.com/screenshots/133499/m/contexts-screenshot.png?v=1568243417)
In Windows 95 and later, F4 opens the drive selection or address bar when browsing files in Windows Explorer.
- Pressing Alt+F4 closes the current open program window without a prompt in all versions of Windows.
- Pressing Ctrl+F4 closes the open window in the current active window in Microsoft Windows. Only works in programs that support multiple windows or tabs in the same program window.
F6
While in Windows Explorer, F6 moves the cursor to different Windows Explorer pane or in Windows 7 browse available drives.
F8
Pressing F8 over and over as the computer is booting starts the computer in Safe Mode.
F10
Activates the file menu bar in all versions of Windows.
- Simulates a right-click on selected item, which is useful if right-click is difficult or impossible using the mouse.
Windows keyboard key shortcuts
Below is a listing of Windows keys that can be used on computers running Microsoft Windows 95 or later and using a keyboard with a Windows key. In the below list of shortcuts, the Windows key is represented by 'WINKEY.' Because not all these shortcuts work in every version of Windows, we've mentioned which versions of Windows support each shortcut key combination.
All versions of Windows
WINKEY
Pressing the Windows key alone opens or hides the Windows Start menu. In Windows 8, this opens or hides the Start screen.
WINKEY+F1
Open the Microsoft Windows help and support center.
WINKEY+Pause / Break key
Open the System Properties window.
WINKEY+D
Display and hide the Windows desktop.
WINKEY+E
Open Microsoft Windows Explorer.
WINKEY+F
Display the Windows Search or Find feature.
WINKEY+Ctrl+F
Display the search for computers window.
WINKEY+L
Lock the computer and switch users if needed (Windows XP and above only).
WINKEY+M
Minimizes all windows.
WINKEY+Shift+M
Undo the minimize done by WINKEY+M and WINKEY+D.
WINKEY+R
Open the run window.
WINKEY+U
Open Utility Manager or the Ease of Access Center.
Windows XP
WINKEY+Tab
Cycle through open programs on the Taskbar.
Windows 7 and 8
WINKEY+1-0
Pressing the Windows key and any top row number key from 1 to 0 opens the program corresponding to the number of the program icon on the Taskbar. For example, if the first icon on the Taskbar is Internet Explorer, pressing WINKEY+1 would open that program or switch to it if already open.
WINKEY+(Plus (+) or Minus (-))
Open Windows Magnifier and zoom in with the plus symbol (+) and zoom out with the minus symbol (-).
Contexts 3 6 2 – Fast Window Switcher Systems Home Theater Systems
- Press the WINKEY+ESC to close the Magnifier.
WINKEY+Home
Minimize all windows except the active window.
WINKEY+P
Change between the monitor and projection display types or how second screen displays computer screen.
WINKEY+T
Set the focus on the Taskbar icons.
WINKEY+Left arrow
Shrinks the window to 1/2 screen on the left side for side by side viewing.
WINKEY+Right arrow
Shrinks the window to 1/2 screen on the right side for side by side viewing.
WINKEY+Up arrow
When in the side by side viewing mode, this shortcut takes the screen back to full size.
WINKEY+Down arrow
Minimizes the screen. Also, when in the side by side viewing mode, this shortcut takes the screen back to a minimized size.
Windows 8
Contexts 3 6 2 – Fast Window Switcher Systems Installation
WINKEY+,
Peek at the Windows desktop.
WINKEY+.
Snap a Windows App to the sides of the screen. Pressing it multiple times switches between the right and left side of the screen or unsnap the app.
WINKEY+Enter
Open Windows Narrator.
WINKEY+C
Open the Charms.
WINKEY+G
Cycle through desktop gadgets.
WINKEY+H
Open Share in Charms.
WINKEY+I
Open the Settings in Charms.
WINKEY+J
Switch between snapped apps.
WINKEY+K
Open Devices in Charms.
WINKEY+O
Contexts 3 6 2 – Fast Window Switcher Systems System
Lock the screen orientation.
WINKEY+X
Open the Power User Menu, which gives you access to many of the features most power users would want to use such as Device Manager, Control Panel, Event Viewer, Command Prompt, and much more.
Windows 10
WINKEY+,
Peek at the Windows desktop.
WINKEY+A
Open the Windows 10 Action Center.
WINKEY+G
Open the Game bar. Only works if a game is running.
WINKEY+I
Contexts 3 6 2 – Fast Window Switcher Systems Diagram
Open the Windows 10 Settings window.
Contexts 3 6 2 – Fast Window Switcher Systems Inc
WINKEY+S
Open the Windows Search utility.
WINKEY+X
Open the Power User Menu, which gives you access to many of the features most power users would want to use such as Device Manager, Control Panel, Event Viewer, Command Prompt, and much more.