![]() The user should be aware that, when using the "-OO" flag, errors may not be recoverable by the |Tecplot Engine|. Using the `()` context in combination with Python's "-OO" flag which removes many run-time checks in the PyTecplot API is the recommended way to run a PyTecplot script which requires faster execution time. This will collect state changes for any operation performed and will emit the required state changes only upon exit of the context. ![]() To speed up such scripts, it may be necessary to use the `()` context. This can cause a script that performs many operations, especially those that alter data, to run slowly since the |Tecplot Engine| must update it's internal state every time a state change is received. In general, state changes are already handled internally after each call to the PyTecplot API. Examples include: loading a data file, changing the color of a mesh plot, creating a new zone, or changing the plot type. ![]() A state change can be triggered by many events. _state change: State Changes - State changes are the method for propagating information when an event occurs. It also contains methods for acquiring and releasing the |Tecplot License|. Note Use this method only for troubleshooting or development purposes, or to prevent users from accidentally uninstalling a required device that is not connected to the computer (such as a USB device or docking station that is not connected to a laptop computer)."""|Tecplot Engine| State and |Tecplot License| Management The `session` module contains methods used to manipulate the |Tecplot Engine| such as notification of a `state change` that was done such as adding or modifying data. Set the variables in the System Variables box. If you are a developer or power user and you want to be able to view devices that are not connected to your computer, set this environment variable globally: Note For Windows 7 and earlier, when you close the command prompt window, Window clears the devmgr_show_nonpresent_devices=1 variable that you set in step 2 and prevents ghosted devices from being displayed when you click Show hidden devices. When you finish troubleshooting, close Device Manager. Note Click Show hidden devices on the View menu in Device Manager before you can see devices that are not connected to the computer. ![]() Troubleshoot the devices and drivers in Device Manager. To work around this behavior and display disconnected devices when you click Show hidden devices:įor Windows 7 and earlier, start with step 1:Ĭlick Start, point to All Programs, point toĪccessories, and then click Command Prompt.Īt a command prompt, type the following command, and then press ENTER:įor Windows 8 and later: From Start, search for device manager, and select Device Manager from the search results.įor Windows 7 and earlier: Type the following command a command prompt, and then press ENTER: Devices that you install that are not connected to the computer (such as a Universal Serial Bus device or "ghosted" devices) are not displayed in Device Manager, even when you click Show hidden devices. Less Symptomsĭevice Manager displays only non-Plug and Play devices, drivers, and printers when you click Show hidden devices on the View menu. Microsoft Windows XP Home Edition Microsoft Windows XP Professional Windows Vista Windows 7 Windows 8.1 Windows 10 More. ![]()
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