docs: python bindings howto

* Another attempt at fixing the org-mode version.
* A proof reader ascertained there were tabs in it instead of whitespace.
* Stripped the lot out and replaced with standard 4 spaces, fixed
  every incorrect example ... and it still breaks upon save and/or export.
* Added the reference to the mutt-groups.py script to demonstrate the
  groups.py module/code.

lang/python/docs/GPGMEpythonHOWTOen.org

@@ -537,7 +537,8 @@
       c = gpg.Context(armor=True)
       rkey = list(c.keylist(pattern=a_key, secret=False))
       ciphertext, result, sign_result = c.encrypt(text, recipients=rkey,
-			      sign=True, always_trust=True, add_encrypt_to=True)
+						  sign=True, always_trust=True,
+						  add_encrypt_to=True)
 
       with open("secret_plans.txt.asc", "wb") as afile:
 	  afile.write(ciphertext)
@@ -587,8 +588,8 @@
 	  if rpattern[i].can_encrypt == 1:
 	      logrus.append(rpattern[i])
 
-      ciphertext, result, sign_result = c.encrypt(text, recipients=logrus, sign=False,
+      ciphertext, result, sign_result = c.encrypt(text, recipients=logrus,
-				  always_trust=True)
+						  sign=False, always_trust=True)
 
       with open("secret_plans.txt.asc", "wb") as afile:
 	  afile.write(ciphertext)
@@ -638,14 +639,14 @@
 			  logrus.remove(logrus[n])
 		      else:
 			  pass
+
       try:
 	  ciphertext, result, sign_result = c.encrypt(text, recipients=logrus,
 						      add_encrypt_to=True)
-	  except:
-	      pass
-
 	  with open("secret_plans.txt.asc", "wb") as afile:
 	      afile.write(ciphertext)
+      except:
+	  pass
     #+end_src
 
     This will attempt to encrypt to all the keys searched for, then
@@ -906,8 +907,8 @@
      {0}
      with key {1}
      made at {2}
-     """.format(c.get_key(sign.fpr).uids[0].uid,
+     """.format(c.get_key(sign.fpr).uids[0].uid, sign.fpr,
-		sign.fpr, time.ctime(sign.timestamp)))
+		time.ctime(sign.timestamp)))
      else:
 	 pass
    #+end_src
@@ -938,8 +939,8 @@
      {0}
      with key {1}
      made at {2}
-     """.format(c.get_key(sign.fpr).uids[0].uid,
+     """.format(c.get_key(sign.fpr).uids[0].uid, sign.fpr,
-		sign.fpr, time.ctime(sign.timestamp)))
+		time.ctime(sign.timestamp)))
      else:
 	 pass
    #+end_src
@@ -987,8 +988,8 @@
      {0}
      with key {1}
      made at {2}
-     """.format(c.get_key(sign.fpr).uids[0].uid,
+     """.format(c.get_key(sign.fpr).uids[0].uid, sign.fpr,
-		sign.fpr, time.ctime(sign.timestamp)))
+		time.ctime(sign.timestamp)))
      else:
 	 pass
    #+end_src
@@ -1009,15 +1010,15 @@
 	 verified = False
 	 print(e)
 
-     if verified is not None:
+     if verified is True:
 	 for i in range(len(result.signatures)):
 	     sign = result.signatures[i]
 	     print("""Good signature from:
      {0}
      with key {1}
      made at {2}
-     """.format(c.get_key(sign.fpr).uids[0].uid,
+     """.format(c.get_key(sign.fpr).uids[0].uid, sign.fpr,
-		sign.fpr, time.ctime(sign.timestamp)))
+		time.ctime(sign.timestamp)))
      else:
 	 pass
    #+end_src
@@ -1372,6 +1373,12 @@
  =group_lines[i][0]= as the name of the group, but
  =group_lists[i][1]= is the key IDs of the group as a string.
 
+   A demonstration of using the =groups.py= module is also available
+   in the form of the executable =mutt-groups.py= script.  This second
+   script reads all the group entries in a user's =gpg.conf= file and
+   converts them into crypt-hooks suitable for use with the Mutt and
+   Neomutt mail clients.
+
 
 * Copyright and Licensing
   :PROPERTIES: