Port over some recent decompyle3 3.8 fixes

test/simple_source/bug36/10_fstring.py

@@ -14,6 +14,12 @@ assert (
 assert "def0" == f"{abc}0"
 assert "defdef" == f"{abc}{abc!s}"
 
+# From 3.8 test/test_string.py
+# We had the precedence of yield vs. lambda incorrect.
+def fn(x):
+    yield f"x:{yield (lambda i: x * i)}"
+
+
 # From 3.6 functools.py
 # Bug was handling format operator strings.
 

test/simple_source/bug38/00_bug_dict_comp.py

@@ -0,0 +1,12 @@
+# Issue 104
+# Python 3.8 reverses the order or keys and values in
+# dictionary comprehensions from the order in all previous Pythons.
+# Also we were looking in the wrong place for the collection of the
+# dictionary comprehension
+# RUNNABLE!
+
+"""This program is self-checking!"""
+x = [(0, [1]), (2, [3])]
+for i in range(0, 1):
+    y = {key: val[i - 1] for (key, val) in x}
+assert y == {0: 1, 2: 3}