Reference: Azure Quantum Development Kit extension for Visual Studio Code
The Azure Quantum Development Kit (QDK) uses all the standard functionality of Visual Studio (VS) Code, along with Q#-specific features when working with .qs files. This article is a reference guide to all Q# related commands and features, with links to additional content as needed. For general VS Code guidance, see the VS Code documentation.
Tip
Most Q# related commands can be accessed from the View > Command Palette menu. While in a .qs file, select Ctrl-Shift-P (Cmd-Shift-P on macOS) and enter Q# to view a filtered list of commands.
For all macOS keyboard shortcuts, see Keyboard shortcuts for macOS.
Commands
Most Q# related commands can be accessed from the View > Command Palette menu. Select Ctrl-Shift-P and enter Q# to view a filtered list of commands. Some commands are only available when a .qs file is active.
Tip
You can create custom keyboard shortcuts for any VS Code command using Keyboard Shortcuts, or Ctrl+K+S. For more information, see Key Bindings for VS Code.
| Command | Action | Notes | Alternate user action |
|---|---|---|---|
| Q#: Create Q# Project | Creates a Q# project in the active folder, including: * a qsharp.json manifest file * a src subfolder with a default main.qs file. |
For more information about Q# projects, see Working with Q# projects. | In File Explorer, right-click the target folder and select Create Q# project. |
| Q#: Create an Azure Quantum notebook | Opens a sample Jupyter Notebook that runs a Q# + Python program and submits a job to Azure Quantum. | For more information about Azure Quantum notebooks, see Work with Azure Quantum notebooks. | N/A |
| Q#: Connect to an Azure Quantum workspace | Connect to an Azure Quantum workspace using your Azure account or a connection string. Once you're authenticated, your workspace appears in File Explorer in Quantum Workspaces. | For more information about Azure Quantum connections, see Connect to your Azure Quantum workspace. | In File Explorer, hover over Quantum workspaces and select the "+" icon. |
| Q#: Open Q# playground | Opens an online folder of Q# sample programs in File Explorer. You can edit and run the programs in the local quantum simulator, and also set breakpoints and step through the code with the built-in debugger. | For more information, see the README file in the sample folder. | N/A |
| Q#: Refresh Azure Quantum workspaces | Syncs the latest changes from your connected quantum workspaces. | If there is a connection issue, an alert icon appears next to the workspace name. | In File Explorer, hover over Quantum workspaces and select the refresh icon. |
| Explorer: Focus on Quantum Workspaces View | Opens File Explorer and focuses on your connected quantum workspaces, if configured. If no workspaces are configured, you're prompted to add an existing workspace. | For more information about Azure Quantum connections, see Connect to your Azure Quantum workspace. | N/A |
The following commands are available when a .qs file is active.
| Command | Action | Notes | Alternate user action |
|---|---|---|---|
| Q#: Set the Azure Quantum QIR target profile | Sets the QIR, or quantum intermediate representation, target profile for your Q# programs. | For more information about target profiles, see Target profiles. | The current target profile is displayed in the bottom toolbar. Select the target profile on the toolbar to open the selection dropdown. |
| Q#: Show circuit | Displays a circuit diagram for the Q# program before it runs. | For more information, see Visualize quantum circuit diagrams. | Select the code lens option Circuit below the @EntryPoint() operation or above each user-defined operation in the program. |
| Q#: Run file and show histogram | Runs the current Q# program and displays a histogram of the results in the right pane. | To access sort and filter options for the histogram display, select the filter icon in the histogram pane. | Select the code lens option Histogram below the @EntryPoint() operation. |
| Q#: Get QIR for current Q# program | Opens the QIR source for the current Q# code in a new edit window. Your program must use the Base or Adaptive RI target profile to export QIR source. | For more information about QIR, see Quantum intermediate representation, and the Q# developer blog. | N/A |
| Debug: Debug Q# file | Opens the current Q# program in the debugger. | For more information, see Debugging and testing your quantum code. | * Select F5 * Select the code lens option Debug below the @EntryPoint() operation.* Select the Run icon in the upper right, and select Debug Q# file. |
| Debug: Run Q# file | Runs the current Q# program in the default quantum simulator. | For more information, see Get started with Q# programs. | * Select Ctrl+F5 * Select the code lens option Run below the @EntryPoint() operation.* Select the Run icon in the upper right, and select Run Q# file. |
| Q#: Calculate Resource Estimates | Invokes the built-in version of the Resource Estimator. | For more information, see Introduction to the Azure Quantum Resource Estimator. | N/A |
| Q#: Help | A brief overview of the QDK extension in VS Code. | For complete Azure Quantum documentation, see Azure Quantum documentation. | N/A |
| Q#: Run file and show circuit diagram | Runs the current Q# program and displays a circuit of the program with outputs. | For more information, see Visualize quantum circuit diagrams. | N/A |
| Q#: Show API documentation | Opens the API documentation in a new pane. Search this pane using Ctrl-F. | For more information, see the Azure Quantum API reference. | N/A |
Terminals
Q# programs make use of two terminal windows in VS Code:
| Terminal | Action |
|---|---|
| Debug console | Displays run output or debug output |
| Problems | Displays pre-compile error checks |
Editing Q# code
Most of the common code editing features in VS Code are available when working with Q# programs. For more information, see Intellisense in the VS Code documentation.
- Precompile error checking
- Go-to definition
- References
- Function signatures
- Parameter information
- Completion suggestions
- Linting - In Q# files, you configure linting per-project in the manifest file. For more information, see Working with Q# projects.
Common tasks
Working with Q# files and projects
| Task | Action | Notes |
|---|---|---|
| New Q# file | Select File > New file > Text file. Save the file with a .qs extension. | If you set Files: Default Language = qsharp, a new file defaults to Q# formatting automatically. |
| Create a Q# project | From an open folder in File Explorer, select Create Q# Project from the Command Palette, or right-click the folder in File Explorer and select Create Q# project. | For more information about Q# projects, see Working with Q# projects. |
| Sample files | In a blank .qs file, enter samples, then select a sample program from the list. | You can also select Open Q# playground in the Command Palette to open an online folder of Q# sample programs in File Explorer. |
Connecting to Azure Quantum
| Task | Action | Notes | Alernate user action |
|---|---|---|---|
| Connect to an Azure Quantum workspace | In File Explorer, expand Quantum workspaces and select Add an existing workspace. Follow the prompts to select a subscription and workspace. | * You can connect to multiple workspaces. Select "+" next to Quantum workspaces to connect another workspace. Workspace connections persist between your VS Code sessions. * To remove a workspace connection, right-click the workspace and select Remove workspace connection. |
From the Command Palette, select Connect to an Azure Quantum workspace. |
| Connect programmatically with a Python program | Right-click an existing workspace connection and select Copy Python code to connect to workspace. Paste the resulting code into your Python program. | For more information, see Submitting Python with Q# jobs to Azure Quantum. | N/A |
Running programs
| Task | Action | Notes | Alernate user action |
|---|---|---|---|
| Run a Q# program on the local quantum simulator | In a Q# program, select the Run icon in the upper right, and select Run Q# file. | For more information on the quantum simulator, see the Sparse quantum simulator. | * Select Ctrl-F5 * From the Command Palette, select Q#: Run file and show histogram or Q#: Run file and show circuit diagram * Select the code lens option Run below the @EntryPoint() operation. |
| Debug a program | In a Q# program, select the Run icon in the upper right, and select Debug Q# file. | For more information about the Q# debugger in VS Code, see Debugging and testing your quantum code. | * Select F5 * Select the code lens option Debug below the @EntryPoint() operation. |
| View providers and targets in your workspaces | In File Explorer, select Quantum workspaces, expand the workspace and then expand Providers to see the available providers in the workspace. Expand an individual provider to view the available targets. | Note: Hover over a target name to view its Status and Queue time before submitting a job. | N/A |
| Submit a job to Azure Quantum | In a Q# program, select a workspace, provider, and target. To submit the current Q# program, select the arrow next to the target. | For more information, see Submitting Q# jobs to Azure Quantum. | N/A |
| View job results | Expand the workspace and then expand Jobs. To open the job output from Azure Storage, select the cloud icon next to the job name. | Jobs are listed with the most recent on top. | N/A |