move example files for "legacy" implementation

git-svn-id: http://svn.code.sf.net/p/docutils/code/trunk@5460 929543f6-e4f2-0310-98a6-ba3bd3dd1d04

1 files changed, 85 insertions, 0 deletions

diff --git a/sandbox/code-block-directive/tools/pygments-enhanced-front-ends/for-else-test.py b/sandbox/code-block-directive/tools/pygments-enhanced-front-ends/for-else-test.py
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+# Example for syntax highlight with Pygments
+# ==========================================
+# 
+# Translate this document to HTML with a pygments enhanced frontend::
+# 
+#   rst2html-pygments --stylesheet=pygments-default.css
+#    
+# or to LaTeX with::
+#      
+#   rst2latex-pygments --stylesheet=pygments-default.sty
+#   
+# to gain syntax highlight in the output.
+# 
+# .. Run the doctests with ``pylit --doctest for-else-test.py``.
+# 
+# 
+# for-else-test
+# -------------
+# 
+# Test the flow in a `for` loop with `else` statement.
+# 
+# First define a simple `for` loop.
+# 
+# .. code-block:: python
+
+def loop1(iterable):
+    """simple for loop with `else` statement"""
+    for i in iterable:
+        print i
+    else:
+        print "iterable empty"
+    print "Ende"
+  
+# Now test it:
+#   
+# The first test runs as I expect: iterator empty -> else clause applies:
+#       
+# .. code-block:: pycon
+# 
+#    >>> loop1(range(0))
+#    iterable empty
+#    Ende
+#   
+# However, the else clause even runs if the iterator is not empty in the first
+# place but after it is "spent":
+# 
+# .. code-block:: pycon
+# 
+#    >>> loop1(range(3))
+#    0
+#    1
+#    2
+#    iterable empty
+#    Ende
+#    
+# It seems like the else clause can only be prevented, if we break out of
+# the loop. Let's try
+# 
+# .. code-block:: python
+
+def loop2(iterable):
+    """for loop with `break` and `else` statement"""
+    for i in iterable:
+        print i
+        break
+    else:
+        print "iterable empty"
+    print "Ende"
+  
+# And indeed, the else clause is skipped after breaking out of the loop:
+# 
+# .. code-block:: pycon
+# 
+#    >>> loop2(range(3))
+#    0
+#    Ende
+#    
+# The empty iterator runs as expected:
+# 
+# .. code-block:: pycon
+#       
+#    >>> loop2(range(0))
+#    iterable empty
+#    Ende
+#