Merge branch 'bugfix/place-typing-import-try' into 'master'

Fixed ImportError for Python2 caused by missing `typing`

Closes IDF-3172

See merge request espressif/esp-idf!13336

tools/idf_monitor_base/console_parser.py

@@ -13,7 +13,11 @@
 # limitations under the License.
 
 import textwrap
+
+try:
     from typing import Optional
+except ImportError:
+    pass
 
 import serial.tools.miniterm as miniterm
 

tools/idf_monitor_base/output_helpers.py

@@ -14,7 +14,11 @@
 
 
 import sys
+
+try:
     from typing import Optional
+except ImportError:
+    pass
 
 # ANSI terminal codes (if changed, regular expressions in LineMatcher need to be udpated)
 ANSI_RED = '\033[1;31m'

tools/idf_monitor_base/stoppable_thread.py

@@ -13,7 +13,11 @@
 # limitations under the License.
 
 import threading
+
+try:
     from typing import Optional
+except ImportError:
+    pass
 
 
 class StoppableThread(object):