Update 'if not' to '!='

abcd2bids.py

@@ -467,7 +467,7 @@ def make_nda_token(args):
     # If NDA credentials are invalid, tell user so without printing password.
     # Manually catch error instead of using try-except to avoid trying to
     # catch another file's exception.
-    if token_call_exit_code is not 0:
+    if token_call_exit_code != 0:
         print("Failed to create NDA token using the username and decrypted "
               "password from {}.".format(os.path.abspath(args.config)))
         sys.exit(1)

src/nda_aws_token_maker.py

@@ -20,7 +20,7 @@
 
 # Try to get NDA credentials from command line args passed in; if there are no
 # args, then prompt user for credentials
-if len(sys.argv) is 3:  # [0] is self, [1] is username, [2] is password, so 3
+if len(sys.argv) == 3:  # [0] is self, [1] is username, [2] is password, so 3
     username = sys.argv[1]
     password = sys.argv[2]
 else:

src/sefm_eval_and_json_editor.py

@@ -57,7 +57,7 @@ def sefm_select(layout, subject, sessions, base_temp_dir, fsl_dir, mre_dir,
     neg = 'AP'
 
     # Add trailing slash to fsl_dir variable if it's not present
-    if fsl_dir[-1] is not "/":
+    if fsl_dir[-1] != "/":
         fsl_dir += "/"
 
     # Make a temporary working directory