introspecting Cryto.DES using DES?? should throw an error message instead of displaying binary junk

[yqiang]

In sage-3.0 on OSX and linux (sage.math.washington.edu) if you do the following:

  sage: from Crypto.Cipher import DES
  sage: DES??

You get a bunch of binary garbage on your screen. I tried the same thing in vanilla ipython and it correctly told me that it could not open the source file.

Component: user interface

Issue created by migration from https://trac.sagemath.org/ticket/3015

[sagetrac-mabshoff]

Description changed:

--- 
+++ 
@@ -1,6 +1,7 @@
 In sage-3.0 on OSX and linux (sage.math.washington.edu) if you do the following:
 
+```
   sage: from Crypto.Cipher import DES
   sage: DES??
-
+```
 You get a bunch of binary garbage on your screen. I tried the same thing in vanilla ipython and it correctly told me that it could not open the source file. 

[mwhansen]

comment:2

I get an error now instead of binary junk. I think this was probably fixed with the new IPython update.