Function resolvePipTargetPaths

pkg/python/python.go:724–733

(ctx *gcp.Context)

	separator := ":"
	if strings.HasPrefix(targetPlatform, "windows") {
		separator = ";"
	}

	// We set PYTHONPATH so that the python interpreter can find the dependencies
	// in the target directory. We also add the application root to PYTHONPATH so
	// that the application can import modules from the root.
	l.LaunchEnvironment.Override("PYTHONPATH", targetDir+separator+".")
	l.SharedEnvironment.Override("PYTHONPATH", targetPath+string(os.PathListSeparator)+ctx.ApplicationRoot())

	return installRequirementsToTarget(ctx, targetPath, reqs, cmdBuilder)
}