From ada387bc55282a0fd211ea70942baa79d8822da5 Mon Sep 17 00:00:00 2001
From: mmatera <matera@fisica.unlp.edu.ar>
Date: Tue, 29 Jun 2021 19:14:22 -0300
Subject: [PATCH] black

---
 mathics/core/evaluation.py |  1 -
 mathics/core/expression.py | 42 +++++++++++++++-----------------------
 2 files changed, 16 insertions(+), 27 deletions(-)

diff --git a/mathics/core/evaluation.py b/mathics/core/evaluation.py
index 2bc938ec0..f4c046433 100644
--- a/mathics/core/evaluation.py
+++ b/mathics/core/evaluation.py
@@ -267,7 +267,6 @@ def __init__(
         self.cache_eval = {}
         self.cache_result = False
 
-
     def parse(self, query):
         "Parse a single expression and print the messages."
         from mathics.core.parser import MathicsSingleLineFeeder
diff --git a/mathics/core/expression.py b/mathics/core/expression.py
index 6a672ad6d..01f6361cc 100644
--- a/mathics/core/expression.py
+++ b/mathics/core/expression.py
@@ -144,12 +144,7 @@ def from_python(arg):
         #     return Symbol(arg)
     elif isinstance(arg, dict):
         entries = [
-            Expression(
-                "Rule",
-                from_python(key),
-                from_python(arg[key]),
-            )
-            for key in arg
+            Expression("Rule", from_python(key), from_python(arg[key]),) for key in arg
         ]
         return Expression(SymbolList, *entries)
     elif isinstance(arg, BaseExpression):
@@ -1318,11 +1313,10 @@ def evaluate(self, evaluation) -> typing.Union["Expression", "Symbol"]:
         # evaluation.cache_result can be set here or from inside the evaluation
         # of a branch. Once it is set to false, the result is not cached,
         # and hence, not used.
-        if evaluation.cache_result and  (self.get_head_name() in (
-            "System`Out",
-            "System`ToBoxes",
-            "System`MakeBoxes",
-        )):
+        if evaluation.cache_result and (
+            self.get_head_name()
+            in ("System`Out", "System`ToBoxes", "System`MakeBoxes",)
+        ):
             evaluation.cache_result = False
 
         if evaluation.cache_result:
@@ -1901,21 +1895,17 @@ def thread(self, evaluation, head=None) -> typing.Tuple[bool, "Expression"]:
             return True, Expression(head, *leaves)
 
     def is_numeric(self) -> bool:
-        return (
-            self._head.get_name()
-            in system_symbols(
-                "Sqrt",
-                "Times",
-                "Plus",
-                "Subtract",
-                "Minus",
-                "Power",
-                "Abs",
-                "Divide",
-                "Sin",
-            )
-            and all(leaf.is_numeric() for leaf in self._leaves)
-        )
+        return self._head.get_name() in system_symbols(
+            "Sqrt",
+            "Times",
+            "Plus",
+            "Subtract",
+            "Minus",
+            "Power",
+            "Abs",
+            "Divide",
+            "Sin",
+        ) and all(leaf.is_numeric() for leaf in self._leaves)
         # TODO: complete list of numeric functions, or access NumericFunction
         # attribute