Index: lldb/source/Plugins/ScriptInterpreter/Python/ScriptInterpreterPython.cpp
===================================================================
--- lldb/source/Plugins/ScriptInterpreter/Python/ScriptInterpreterPython.cpp
+++ lldb/source/Plugins/ScriptInterpreter/Python/ScriptInterpreterPython.cpp
@@ -537,6 +537,8 @@
   PyRun_SimpleString(run_string.GetData());
   run_string.Clear();
 
+  SetPythonEnvironment(m_debugger);
+
   run_string.Printf("run_one_line (%s, 'import lldb.embedded_interpreter; from "
                     "lldb.embedded_interpreter import run_python_interpreter; "
                     "from lldb.embedded_interpreter import run_one_line')",
@@ -3269,6 +3271,26 @@
                      "from lldb.embedded_interpreter import run_one_line");
 }
 
+void ScriptInterpreterPythonImpl::SetPythonEnvironment(Debugger &debugger) {
+  StreamString run_string;
+  lldb::TargetSP target_get = debugger.GetTargetList().GetSelectedTarget();
+  const Environment &env = target_get->GetGlobalProperties()->GetEnvironment();
+
+  PyRun_SimpleString("import os");
+  for (const auto &KV : env) {
+    if (strcmp(KV.getKey().data(), "PYTHONPATH") == 0 ||
+        strcmp(KV.getKey().data(), "PATH") == 0) {
+      run_string.Clear();
+      run_string.Printf(
+          "os.environ[\"%s\"] = os.environ.get(\"%s\",\"\")+ os.pathsep +"
+          "\"%s\"",
+          KV.getKey().data(), KV.getKey().data(), KV.getValue().data());
+      PyRun_SimpleString(run_string.GetData());
+      AddToSysPath(AddLocation::End, KV.getValue().data());
+    }
+  }
+}
+
 void ScriptInterpreterPythonImpl::AddToSysPath(AddLocation location,
                                                std::string path) {
   std::string path_copy;
Index: lldb/source/Plugins/ScriptInterpreter/Python/ScriptInterpreterPythonImpl.h
===================================================================
--- lldb/source/Plugins/ScriptInterpreter/Python/ScriptInterpreterPythonImpl.h
+++ lldb/source/Plugins/ScriptInterpreter/Python/ScriptInterpreterPythonImpl.h
@@ -341,6 +341,8 @@
                                          lldb::user_id_t watch_id);
   static void InitializePrivate();
 
+  static void SetPythonEnvironment(Debugger &debugger);
+
   class SynchronicityHandler {
   private:
     lldb::DebuggerSP m_debugger_sp;
Index: lldb/test/Shell/ScriptInterpreter/Python/Inputs/environ.py
===================================================================
--- /dev/null
+++ lldb/test/Shell/ScriptInterpreter/Python/Inputs/environ.py
@@ -0,0 +1,10 @@
+import os
+import sys
+
+def test(debugger, command, result, internal_dict):
+  print(os.environ["PYTHONPATH"])
+  print(sys.path)
+
+def __lldb_init_module(debugger, internal_dict):
+  debugger.HandleCommand('command script add -f environ.test test')
+
Index: lldb/test/Shell/ScriptInterpreter/Python/pass_environment.test
===================================================================
--- /dev/null
+++ lldb/test/Shell/ScriptInterpreter/Python/pass_environment.test
@@ -0,0 +1,10 @@
+# REQUIRES: python
+
+# RUN: %lldb --batch \
+# RUN:    --script-language python \
+# RUN:    -O 'settings append target.env-vars PYTHONPATH=/tmp' \
+# RUN:    -O 'command script import %S/Inputs/environ.py' \
+# RUN:    -O 'test' 2>&1  | FileCheck %s
+
+# CHECK: :/tmp
+# CHECK: '/tmp'