Part of the decompye3 loop "continue" fixes

test/simple_source/bug38/03_loop_try_break.py

@@ -0,0 +1,62 @@
+# From uncompyle issue #295 on 3.8
+# In 3.8 BREAK_LOOP and CONTINUE_LOOP no longer exist.
+# The bug is that the "break" is turned into:
+# POP_BLOCK
+# JUMP_ABSOLUTE
+while True:
+    try:
+        x = 1
+        break
+    except Exception:
+        pass
+
+while True:
+    try:
+        x -= 1
+    except Exception:
+        break
+
+# Issue #25 https://github.com/rocky/python-decompile3/issues/25
+# Same as above using "for".
+for i in range(5):
+    try:
+        x = 1
+        break
+    except Exception:
+        if i == 4:
+            raise
+
+# From 3.8.1 _osx_support.py
+# Bug was handling a "break" inside a "try".
+# In 3.8 POP_EXCEPT is moved before "JUMP_ABSOLUTE" of
+# the break.
+# FIXME:
+# def compiler_fixup(compiler_so, cc_args, index):
+#     if index:
+#         while True:
+#             try:
+#                 index = 1
+#             except:
+#                 index = 2
+#                 break
+
+
+# Bug was returning an IfExp inside "with":
+# the return value is mixed in with the "with"
+# code finalization.
+# FIXME:
+# def _read_output(x, a):
+#     with x as fp:
+#         return fp if a else None
+
+
+# In 3.8 the CONTINUE_LOOP disappears,
+# and this makes it harder to detect continue
+# inside a loop with a continue in the except clause.
+def connect_ws_with_retry(f1, f2):
+    while True:
+        try:
+            f1()
+        except Exception:
+            f2()
+            continue