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does anyone know how to run q # code for me

CarlosLopez-6362 0 Reputation points
2026-04-09T08:18:25.0866667+00:00

I have many python codes but don't know how to test them they are i have created a suite of code for many projects just need someone who knows how to test them if your associated with Microsoft don't reply thank you

Developer technologies | Visual Studio | Testing
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  1. CarlosLopez-6362 0 Reputation points
    2026-04-09T08:19:31.38+00:00

    no i rather a real human respond

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  2. AI answer

    2026-04-09T08:18:59.8366667+00:00

    To run and test Q# code (with or without Python) in Visual Studio Code, use the Quantum Development Kit (QDK) and its testing/debugging features.

    1. Install and set up Q# in VS Code
    • Install Visual Studio Code.
    • Install the QDK extension for VS Code.
    • If using Python with Q#, also install the qsharp and azure-quantum Python packages as described in the QDK setup.
    1. Choose how to organize Q# and Python In VS Code, Q# can be used in three main formats:
    • Pure Q#: .qs files only.
    • Q# + Python: .qs plus a Python host .py file that calls Q# operations.
    • Jupyter Notebook: .ipynb with both Python and Q# cells using the %%qsharp magic.
    1. Run and debug pure Q# programs in VS Code
    • Open a .qs file that contains an entry point operation.
    • In the editor, use the CodeLens commands next to the entry point:
      • Select Run (or press Ctrl + F5) to run on the built-in local simulator.
      • Select Debug (or press F5) to step through the code, inspect state, and debug.
    • Output appears in the Debug Console.
    1. Run and test Q# from a Jupyter Notebook (Python kernel)
    2. In VS Code, open the Command Palette (Ctrl + Shift + P) and select Create: New Jupyter Notebook.
    3. In the first cell, import QDK support:
         from qdk import qsharp
         import qdk.azure
      
    4. Add a new cell, switch it to Q# with %%qsharp, and define operations, for example:
         %%qsharp
         
         operation Random() : Result {
             use q = Qubit();
             H(q);
             let result = M(q);
             Reset(q);
             return result
         }
         
         operation RandomNBits(N: Int): Result[] {
             mutable results = [];
             for i in 0 .. N - 1 {
                 let r = Random();
                 results += [r];
             }
             return results
         }
      
    5. Test the operation on the local simulator from a Python cell:
         qsharp.eval("RandomNBits(4)")
      
    6. Run multiple shots and collect results:
         qsharp.run("RandomNBits(4)", shots=10)
      
    7. Run and test Q# from a Python script (Q# project)
    8. Create a Q# project and place Q# code in Source.qs (for example the Random and RandomNBits operations above).
    9. In the project root (where qsharp.json is), create randomNum.py with:
          from qdk import qsharp
          from qdk.azure import Workspace
          
          qsharp.init(project_root = '../MyProjectRootFolder')
          print(qsharp.eval("Source.RandomNBits(4)"))
      
      • If no namespace is specified in Source.qs, the file name Source is used as the default namespace, so the operation is Source.RandomNBits.
    10. Optionally use qsharp.run("Source.RandomNBits(4)", shots=10) to run multiple shots and get a list of results.
    11. Test and validate Q# code with assertions
    • Use fail expressions inside if statements to enforce conditions:
        operation Main() : Unit {
            use qs = Qubit[6];
            let n_qubits = Length(qs);
        
            if n_qubits != 3 {
                fail $"The system should have 3 qubits, not {n_qubits}.";
            }
        }
      
    • Or use Std.Diagnostics.Fact for unit-test-like checks:
        import Std.Diagnostics.Fact;
        
        operation Main() : Unit {
            use qs = Qubit[6];
            let n_qubits = Length(qs);
        
            Fact(n_qubits == 3, $"The system should have 3 qubits, not {n_qubits}.");
        }
      
    • Run with Ctrl + F5 to see whether tests pass or fail.
    1. Inspect and debug quantum state from Python
    • In a Jupyter Notebook, after preparing qubits in a Q# cell, inspect the state with:
        dump = qsharp.dump_machine()
        dump
      
    • To inspect gate matrices, define operations via qsharp.eval and then call dump_operation, for example:
        qsharp.eval("operation SingleH(qs : Qubit[]) : Unit { H(qs[0]) }")
        res = dump_operation("SingleH", 1)
        print("Single-qubit Hadamard gate:\n", res)
      

    These steps allow running, testing, and debugging Q# code and Q#–Python integrations entirely within Visual Studio Code using the QDK.


    References:

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