Convert Python 2 idioms to Python 2/3-compatible ones.

- convert print, StringIO, except as, octals, izip
- convert print statement to print function
- convert StringIO to six.StringIO
  - remove usage of csv reader in Spec, in favor of simple regex
  - csv reader only does byte strings
- convert 0755 octal literals to 0o755
- convert `except Foo, e` to `except Foo as e`
- fix a few places `str` is used.
  - may need to switch everything to str later.
- convert iteritems usages to use six.iteritems
- fix urllib and HTMLParser
- port metaclasses to use six.with_metaclass
- More octal literal conversions for Python 2/3
- Fix a new octal literal.
- Convert `basestring` to `six.string_types`
- Convert xrange -> range
- Fix various issues with encoding, iteritems, and Python3 semantics.
- Convert contextlib.nested to explicitly nexted context managers.
- Convert use of filter() to list comprehensions.
- Replace reduce() with list comprehensions.
-  Clean up composite: replace inspect.ismethod() with callable()
- Python 3 doesn't have "method" objects; inspect.ismethod returns False.
- Need to use callable in Composite to make it work.
- Update colify to use future division.
- Fix zip() usages that need to be lists.
- Python3: Use line-buffered logging instead of unbuffered.
- Python3 raises an error with unbuffered I/O
  - See https://bugs.python.org/issue17404

1 files changed, 4 insertions, 4 deletions

diff --git a/lib/spack/llnl/util/tty/__init__.py b/lib/spack/llnl/util/tty/__init__.py
index f73d96a4e4..f78d889037 100644
--- a/lib/spack/llnl/util/tty/__init__.py
+++ b/lib/spack/llnl/util/tty/__init__.py
@@ -29,7 +29,7 @@ import fcntl
 import termios
 import struct
 import traceback
-from StringIO import StringIO
+from six import StringIO
 
 from llnl.util.tty.color import *
 
@@ -93,7 +93,7 @@ def msg(message, *args, **kwargs):
     else:
         cwrite("@*b{%s==>} %s" % (st_text, cescape(message)))
     for arg in args:
-        print indent + str(arg)
+        print(indent + str(arg))
 
 
 def info(message, *args, **kwargs):
@@ -201,7 +201,7 @@ def get_yes_or_no(prompt, **kwargs):
         if not ans:
             result = default_value
             if result is None:
-                print "Please enter yes or no."
+                print("Please enter yes or no.")
         else:
             if ans == 'y' or ans == 'yes':
                 result = True
@@ -239,7 +239,7 @@ def hline(label=None, **kwargs):
     out.write(label)
     out.write(suffix)
 
-    print out.getvalue()
+    print(out.getvalue())
 
 
 def terminal_size():