[yoda-svn] yoda: Reinstate writing to Python file objects (without zipping)

[YODA Mercurial]

details:   https://yoda.hepforge.org/hg/yoda/rev/9f91fa4b7b15
branches:  release-1-7
changeset: 1459:9f91fa4b7b15
user:      Andy Buckley <andy at insectnation.org>
date:      Thu May 31 17:04:29 2018 +0100
description:
Reinstate writing to Python file objects (without zipping)

diffs (truncated from 129 to 50 lines):

--- a/pyext/yoda/include/IO.pyx	Wed May 23 14:39:32 2018 +0100
+++ b/pyext/yoda/include/IO.pyx	Thu May 31 17:04:29 2018 +0100
@@ -58,29 +58,29 @@
 # cdef void _make_iss(c.istringstream &iss, string s):
 #     iss.str(s)
 
-# ## Read a file's contents as a returned string
-# ## The file argument can either be a file object, filename, or special "-" reference to stdin
-# def _str_from_file(file_or_filename):
-#     if hasattr(file_or_filename, 'read'):
-#         s = file_or_filename.read()
-#     elif file_or_filename == "-":
-#         s = sys.stdin.read()
-#     else:
-#         with open(file_or_filename, "r") as f:
-#             s = f.read()
-#     return s
+## Read a file's contents as a returned string
+## The file argument can either be a file object, filename, or special "-" reference to stdin
+def _str_from_file(file_or_filename):
+    if hasattr(file_or_filename, 'read'):
+        s = file_or_filename.read()
+    elif file_or_filename == "-":
+        s = sys.stdin.read()
+    else:
+        with open(file_or_filename, "r") as f:
+            s = f.read()
+    return s
 
-# ## Write a string to a file
-# ## The file argument can either be a file object, filename, or special "-" reference to stdout
-# def _str_to_file(s, file_or_filename):
-#     s = s.decode('utf-8')
-#     if hasattr(file_or_filename, 'write'):
-#         file_or_filename.write(s)
-#     elif file_or_filename == "-":
-#         sys.stdout.write(s)
-#     else:
-#         with open(file_or_filename, "w") as f:
-#             f.write(s)
+## Write a string to a file
+## The file argument can either be a file object, filename, or special "-" reference to stdout
+def _str_to_file(s, file_or_filename):
+    s = s.decode('utf-8')
+    if hasattr(file_or_filename, 'write'):
+        file_or_filename.write(s)
+    elif file_or_filename == "-":
+        sys.stdout.write(s)
+    else:
+        with open(file_or_filename, "w") as f: