Function gatherInternalStartupCode

src/kernels/kernel.ts:973–1035

()

    }

    protected async gatherInternalStartupCode(): Promise<string[]> {
        // Gather all of the startup code into a giant string array so we
        // can execute it all at once.
        const result: string[] = [];
        const startupCode = await Promise.all(
            this.startupCodeProviders.sort((a, b) => b.priority - a.priority).map((provider) => provider.getCode(this))
        );
        for (let code of startupCode) {
            result.push(...code);
        }

        // If this is a live kernel, we shouldn't be changing anything by running startup code.
        if (
            isPythonKernelConnection(this.kernelConnectionMetadata) &&
            this.kernelConnectionMetadata.kind !== 'connectToLiveRemoteKernel'
        ) {
            // Set the ipynb file
            const file = getFilePath(this.resourceUri);
            if (file) {
                result.push(`__vsc_ipynb_file__ = "${file.replace(/\\/g, '\\\\')}"`);
            }
            if (!this.kernelSettings.enableExtendedPythonKernelCompletions) {
                result.push(CodeSnippets.DisableJedi);
            }

            // For Python notebook initialize matplotlib
            // Wrap this startup code in try except as it might fail
            result.push(
                ...wrapPythonStartupBlock(
                    this.getMatplotLibInitializeCode(),
                    'Failed to initialize matplotlib startup code. Matplotlib might be missing.'
                )
            );

            // If this is a Jupyter Server kernel (not raw, then we need to ensure the cwd is set correctly)
            if (
                isLocalConnection(this.kernelConnectionMetadata) &&
                this.rawKernelSupported?.isSupported === false &&
                this.kernelWorkingDirectory
            ) {
                const workingDirectory = await this.kernelWorkingDirectory.computeWorkingDirectory(
                    this.kernelConnectionMetadata,
                    this.resourceUri,
                    this.startCancellation.token
                );

                // eslint-disable-next-line local-rules/dont-use-fspath
                const safeWorkingDirectory = toPythonSafePath(workingDirectory.fsPath);
                const code = `
import os as _VSCODE_os
try:
    _VSCODE_os.chdir(${safeWorkingDirectory})
except:
    pass

del _VSCODE_os
`;
                result.push(code);