diff --git a/lastpass/account.py b/lastpass/account.py
index 3ab94d9..d16746f 100644
--- a/lastpass/account.py
+++ b/lastpass/account.py
@@ -32,6 +32,7 @@ def fields(self):
     def __str__(self):
         return "name: {}\n\tusername: {}\n\tpassword: {}\n\turl: {}\n\tgroup: {}\n\tnotes: {}".format(self.name, self.username, self.password, self.url, self.group, self.notes_string())
 
+
 class SecureNote(Account):
     """
     Lastpass Secure Note
@@ -43,4 +44,4 @@ def __str__(self):
         try:
             return getattr(self, 'unparsed_notes_0').decode()
         except AttributeError:
-            return '\n'.join( [ '\t\t{}: {}'.format(field, getattr(self, field).decode() ) for field in self.fields() ] )
+            return '\n'.join(['\t\t{}: {}'.format(field, getattr(self, field).decode()) for field in self.fields()])
diff --git a/lastpass/fetcher.py b/lastpass/fetcher.py
index d395fd2..859b7f1 100644
--- a/lastpass/fetcher.py
+++ b/lastpass/fetcher.py
@@ -60,7 +60,7 @@ def request_iteration_count(username, web_client=http):
 
     try:
         count = int(response.content)
-    except:
+    except Exception:
         raise InvalidResponseError('Key iteration count is invalid')
 
     if count > 0:
diff --git a/lastpass/parser.py b/lastpass/parser.py
index 3a60b55..c4e9f1d 100644
--- a/lastpass/parser.py
+++ b/lastpass/parser.py
@@ -43,6 +43,7 @@
 compress = zlib.compress
 decompress = zlib.decompress
 
+
 def extract_chunks(blob):
     """Splits the blob into chucks grouped by kind."""
     chunks = []
@@ -150,7 +151,7 @@ def parse_secure_note_server(notes):
                 info[last_field] = b''
             if last_field:
                 old_bytes = info[last_field]
-                info[last_field] = (old_bytes.decode()+'\n'+line.decode()).encode()
+                info[last_field] = (old_bytes.decode() + '\n' + line.decode()).encode()
             continue
 
         # Split only once so that strings like "Hostname:host.example.com:80"
@@ -242,6 +243,7 @@ def encode_base64(data):
     b64data = b64encode(data)
     return b64data
 
+
 def decode_aes256_plain_auto(data, encryption_key):
     """Guesses AES cipher (EBC or CBD) from the length of the plain data."""
     assert isinstance(data, bytes)
@@ -322,10 +324,20 @@ def pad(data):
     # see http://passingcuriosity.com/2009/aes-encryption-in-python-with-m2crypto/
     padded = (BS - len(data) % BS) * chr(BS - len(data) % BS)
     if isinstance(data, str):
-        data = str.encode(data, 'latin1')
+        try:
+            data = str.encode(data, 'latin1')
+        except Exception:
+            data = bytes(data)
     if isinstance(padded, str):
-        padded = str.encode(padded, 'latin1')
-    return data + padded
+        try:
+            padded = str.encode(padded, 'latin1')
+        except Exception:
+            padded = bytes(data)
+    try:
+        result = bytes(data + padded)
+    except Exception:
+        result = data + padded
+    return result
 
 
 def unpad(data):
@@ -334,9 +346,13 @@ def unpad(data):
     """
     # see http://passingcuriosity.com/2009/aes-encryption-in-python-with-m2crypto/
     if isinstance(data, str):
-        data = str.encode(data, 'latin1')
+        try:
+            data = str.encode(data, 'latin1')
+        except Exception:
+            data = bytes(data)
     return data[0:-ord(data[-1:])]
 
+
 def decode_aes256(cipher, iv, data, encryption_key):
     """
     Decrypt AES-256 bytes.
diff --git a/lastpass/vault.py b/lastpass/vault.py
index 5d004a6..df88a9d 100644
--- a/lastpass/vault.py
+++ b/lastpass/vault.py
@@ -3,6 +3,7 @@
 from . import parser
 from .exceptions import InvalidResponseError
 
+
 class Vault(object):
     """
     Lastpass Vault
diff --git a/scripts/lpass b/scripts/lpass
index 25fbc69..c5e5fbe 100755
--- a/scripts/lpass
+++ b/scripts/lpass
@@ -36,6 +36,7 @@ LastPass CLI in Python. Very Minimal.
 ---------------------------------------------
 """
 
+from __future__ import print_function
 import argparse
 import getpass
 import json
@@ -68,8 +69,8 @@ S_WHITE = '\033[37m'
 S_RESET = '\033[0m'
 
 LPASS_ENCRYPTION_KEY = '1234567890ABCDEF'
-LPASS_CONFIG_FILE = os.path.expanduser("~/.lpass-config")
-LPASS_BLOB_FILE = os.path.expanduser("~/.lpass-blob")
+LPASS_CONFIG_FILE = os.getenv('LPASS_CONFIG_FILE', os.path.expanduser("~/.lpass-config"))
+LPASS_BLOB_FILE = os.getenv('LPASS_BLOB_FILE', os.path.expanduser("~/.lpass-blob"))
 CLIENT_ID = None  # Usually the IMEI.
 
 
@@ -138,7 +139,7 @@ def command_login(args):
     if os.path.exists(LPASS_CONFIG_FILE):
         if not args.force:
             raise Exception('Unable to Overwrite Configuration.')
-    (_, password) = __get_login(args.username, None, args.mfa)
+    (_, password) = __get_login(args.username, os.getenv('LPASS_PASSWORD', None), args.mfa)
     __print_message('Logged into {}'.format(__colored(args.username, S_YELLOW)))
     __write_config(args.username, password, args.mfa)
 
@@ -273,7 +274,7 @@ def main():
     parser_login.add_argument('--plaintext-key', default=True, action='store_true')
     parser_login.add_argument('--mfa', default=False, action='store_true')
     parser_login.add_argument('--force', '-f', default=False, action='store_true')
-    parser_login.add_argument('username', type=str, default=None)
+    parser_login.add_argument('username', type=str, default=os.getenv('LPASS_USER', None))
     parser_login.set_defaults(func=command_login)
 
     parser_logout = subparsers.add_parser('logout', help='Logout from Lasspass.')