Fix most trivially-findable print statements.

There's one major and one minor category still unfixed:
doctests are the major category (and I hope to be able to augment the
refactoring tool to refactor bona fide doctests soon);
other code generating print statements in strings is the minor category.

(Oh, and I don't know if the compiler package works.)

Lib/difflib.py

@@ -76,7 +76,7 @@ class SequenceMatcher:
     sequences.  As a rule of thumb, a .ratio() value over 0.6 means the
     sequences are close matches:
 
-    >>> print round(s.ratio(), 3)
+    >>> print(round(s.ratio(), 3))
     0.866
     >>>
 
@@ -84,7 +84,7 @@ class SequenceMatcher:
     .get_matching_blocks() is handy:
 
     >>> for block in s.get_matching_blocks():
-    ...     print "a[%d] and b[%d] match for %d elements" % block
+    ...     print("a[%d] and b[%d] match for %d elements" % block)
     a[0] and b[0] match for 8 elements
     a[8] and b[17] match for 21 elements
     a[29] and b[38] match for 0 elements
@@ -97,7 +97,7 @@ class SequenceMatcher:
     use .get_opcodes():
 
     >>> for opcode in s.get_opcodes():
-    ...     print "%6s a[%d:%d] b[%d:%d]" % opcode
+    ...     print("%6s a[%d:%d] b[%d:%d]" % opcode)
      equal a[0:8] b[0:8]
     insert a[8:8] b[8:17]
      equal a[8:29] b[17:38]
@@ -545,8 +545,8 @@ class SequenceMatcher:
         >>> b = "abycdf"
         >>> s = SequenceMatcher(None, a, b)
         >>> for tag, i1, i2, j1, j2 in s.get_opcodes():
-        ...    print ("%7s a[%d:%d] (%s) b[%d:%d] (%s)" %
-        ...           (tag, i1, i2, a[i1:i2], j1, j2, b[j1:j2]))
+        ...    print(("%7s a[%d:%d] (%s) b[%d:%d] (%s)" %
+        ...           (tag, i1, i2, a[i1:i2], j1, j2, b[j1:j2])))
          delete a[0:1] (q) b[0:0] ()
           equal a[1:3] (ab) b[0:2] (ab)
         replace a[3:4] (x) b[2:3] (y)
@@ -832,7 +832,7 @@ class Differ:
 
     As a single multi-line string it looks like this:
 
-    >>> print ''.join(result),
+    >>> print(''.join(result), end="")
         1. Beautiful is better than ugly.
     -   2. Explicit is better than implicit.
     -   3. Simple is better than complex.
@@ -889,8 +889,9 @@ class Differ:
 
         Example:
 
-        >>> print ''.join(Differ().compare('one\ntwo\nthree\n'.splitlines(1),
+        >>> print(''.join(Differ().compare('one\ntwo\nthree\n'.splitlines(1),
         ...                                'ore\ntree\nemu\n'.splitlines(1))),
+        ...       end="")
         - one
         ?  ^
         + ore
@@ -950,7 +951,7 @@ class Differ:
         >>> d = Differ()
         >>> results = d._fancy_replace(['abcDefghiJkl\n'], 0, 1,
         ...                            ['abcdefGhijkl\n'], 0, 1)
-        >>> print ''.join(results),
+        >>> print(''.join(results), end="")
         - abcDefghiJkl
         ?    ^  ^  ^
         + abcdefGhijkl
@@ -1058,7 +1059,7 @@ class Differ:
         >>> d = Differ()
         >>> results = d._qformat('\tabcDefghiJkl\n', '\t\tabcdefGhijkl\n',
         ...                      '  ^ ^  ^      ', '+  ^ ^  ^      ')
-        >>> for line in results: print repr(line)
+        >>> for line in results: print(repr(line))
         ...
         '- \tabcDefghiJkl\n'
         '? \t ^ ^  ^\n'
@@ -1164,7 +1165,7 @@ def unified_diff(a, b, fromfile='', tofile='', fromfiledate='',
     ...             'zero one tree four'.split(), 'Original', 'Current',
     ...             'Sat Jan 26 23:30:50 1991', 'Fri Jun 06 10:20:52 2003',
     ...             lineterm=''):
-    ...     print line
+    ...     print(line)
     --- Original Sat Jan 26 23:30:50 1991
     +++ Current Fri Jun 06 10:20:52 2003
     @@ -1,4 +1,4 @@
@@ -1223,9 +1224,10 @@ def context_diff(a, b, fromfile='', tofile='',
 
     Example:
 
-    >>> print ''.join(context_diff('one\ntwo\nthree\nfour\n'.splitlines(1),
+    >>> print(''.join(context_diff('one\ntwo\nthree\nfour\n'.splitlines(1),
     ...       'zero\none\ntree\nfour\n'.splitlines(1), 'Original', 'Current',
     ...       'Sat Jan 26 23:30:50 1991', 'Fri Jun 06 10:22:46 2003')),
+    ...       end="")
     *** Original Sat Jan 26 23:30:50 1991
     --- Current Fri Jun 06 10:22:46 2003
     ***************
@@ -1295,7 +1297,7 @@ def ndiff(a, b, linejunk=None, charjunk=IS_CHARACTER_JUNK):
 
     >>> diff = ndiff('one\ntwo\nthree\n'.splitlines(1),
     ...              'ore\ntree\nemu\n'.splitlines(1))
-    >>> print ''.join(diff),
+    >>> print(''.join(diff), end="")
     - one
     ?  ^
     + ore
@@ -1992,11 +1994,11 @@ def restore(delta, which):
     >>> diff = ndiff('one\ntwo\nthree\n'.splitlines(1),
     ...              'ore\ntree\nemu\n'.splitlines(1))
     >>> diff = list(diff)
-    >>> print ''.join(restore(diff, 1)),
+    >>> print(''.join(restore(diff, 1)), end="")
     one
     two
     three
-    >>> print ''.join(restore(diff, 2)),
+    >>> print(''.join(restore(diff, 2)), end="")
     ore
     tree
     emu