1 files changed, 11 insertions, 9 deletions

diff --git a/smount.py b/smount.py
index 648c6e9..9a0a312 100755
--- a/smount.py
+++ b/smount.py
@@ -1,5 +1,4 @@
 #!/usr/bin/env python
-# -*- coding: utf-8 -*-
 
 import json
 import os
@@ -9,27 +8,30 @@ import sys
 
 def main():
     """Main entry point"""
-    if (len(sys.argv) != 2):
-        sys.exit('Invalid parameter. Usage: {0} <mapping>\n'.format(
-            sys.argv[0]))
+    if len(sys.argv) != 2:
+        sys.exit(f'Invalid parameter. Usage: {sys.argv[0]} <mapping>\n')
+
     cstm_error = ''
+
     try:
         cstm_error = 'Could not open config (~/.smount.json)'
+
         with open(os.path.expanduser('~/.smount.json')) as fp:
             config_dict = json.load(fp)
-        cstm_error = 'Invalid / nonexistent mapping: {0}'.format(sys.argv[1])
+
+        cstm_error = f'Invalid / nonexistent mapping: {sys.argv[1]}'
         data = config_dict[sys.argv[1]]
-        cstm_error = 'system() error'
+        cstm_error = 'subprocess error'
         args = ['/usr/bin/sshfs']
         if data.get('options'):
             for opt in data.get('options'):
                 args.extend(['-o', opt])
         args.extend([data['src'], data['dest']])
         subprocess.check_call(args)
-    except subprocess.CalledProcessError as e:
-        print('Execution error: {0}'.format(e), file=sys.stderr, flush=True)
+    except subprocess.CalledProcessError as err:
+        print(f'Execution error: {err}', file=sys.stderr, flush=True)
     except Exception:
-        print('Error: {0}'.format(cstm_error), file=sys.stderr, flush=True)
+        print(f'Error: {cstm_error}', file=sys.stderr, flush=True)
 
 
 if __name__ == '__main__':