transforms: PEP8

artiq/transforms/lower_time.py

@@ -1,4 +1,5 @@
-"""This transform implements time management functions (delay/now/at)
+"""
+This transform implements time management functions (delay/now/at)
 using an accumulator 'now' and simple replacement rules:
 
     delay(t) ->  now += t

artiq/transforms/quantize_time.py

@@ -1,4 +1,5 @@
-"""This transform turns calls to delay/now/at that use non-integer time
+"""
+This transform turns calls to delay/now/at that use non-integer time
 expressed in seconds into calls that use int64 time expressed in multiples of
 ref_period.
 

artiq/transforms/remove_inter_assigns.py

@@ -4,6 +4,7 @@ from collections import defaultdict
 
 from artiq.transforms.tools import is_ref_transparent, count_all_nodes
 
+
 class _TargetLister(ast.NodeVisitor):
     def __init__(self):
         self.targets = set()

artiq/transforms/tools.py

@@ -104,7 +104,8 @@ def _is_ref_transparent(dependencies, expr):
         return all(_is_ref_transparent(dependencies, v) for v in expr.values)
     elif isinstance(expr, ast.Call):
         return (expr.func.id in _replaceable_funcs and
-            all(_is_ref_transparent(dependencies, arg) for arg in expr.args))
+                all(_is_ref_transparent(dependencies, arg)
+                    for arg in expr.args))
     else:
         return False
 

artiq/transforms/unparse.py

@@ -385,7 +385,8 @@ class _Unparser:
             self.dispatch(k)
             self.write(": ")
             self.dispatch(v)
-        _interleave(lambda: self.write(", "), write_pair, zip(t.keys, t.values))
+        _interleave(lambda: self.write(", "), write_pair,
+                    zip(t.keys, t.values))
         self.write("}")
 
     def _Tuple(self, t):