Windows: Fix 'pwd' import.

src/tools.py

@@ -17,7 +17,6 @@
 # -*- coding: utf-8 -*-
 
 import os
-import pwd
 import time
 import logging
 import traceback
@@ -33,6 +32,13 @@ from functools import (
     reduce, partial, wraps
 )
 
+try:
+    import pwd
+    with_pwd = True
+except Exception as e:
+    print("Module 'pwd' is not available")
+    with_pwd = False
+
 ###########
 # LOGGING #
 ###########
@@ -273,7 +279,7 @@ def timestamp_to_old_pamhyr_date(time: int):
 
 
 def get_user_name():
-    if posix:
+    if with_pwd:
         return pwd.getpwuid(os.getuid()).pw_gecos
     else:
         return "Me"