Fixed precedence on '-'. Passed additional tests. Comments on bad.py. Updated worklog.

src/test/data/pa1/student_contributed/bad.py

@@ -4,8 +4,10 @@ def fun5():
     c = 6
     def fun6():
         print("Hello")
-  c = 4 + 5
+  c = 4 + 5 # Indentation error
 
+# Global statements in between definitions 
+# (not allowed in the language manual)
 if True:
     if True:
         print("Hello")
@@ -16,11 +18,11 @@ if True:
 else:
     print("Again")
 else:
-    print("And Again")
+    print("And Again") # Unmatched Else
 
 class Thor(object):
     y:int = 0
-    print("Right place?")
+    print("Right place?") # Statement in class
 
 class Stones(object):
     y:int = 0
@@ -30,6 +32,8 @@ class Stones(object):
             return 2+3
     print("Wrong Place")
 
+# Functions without `statements' 
+# (not allowed in the language manual)
 def fun1():
     def fun2():
         print("Hello")

src/test/data/pa1/student_contributed/good.py

@@ -73,8 +73,10 @@ f.bar(4)
 a=[[[1],[2]],[[3],[4]]]
 print(a[0][0][1]*a[1][1][0])
 
-multiline_string="Hi World,
+multiline_string="Hi World,\
 Here I am"
 
+expr_precedence = -a + b * (c + d)
+
 stone="Blue"
 print(get_stones(stone))