Upgrade to the latest black (#2157)

Upgrade to the latest black

hypothesis-python/RELEASE.rst

@@ -0,0 +1,4 @@
+RELEASE_TYPE: patch
+
+This release updates Hypothesis's formatting to the new version of black, and
+has absolutely no user visible effect.

hypothesis-python/src/hypothesis/extra/numpy.py

@@ -96,7 +96,7 @@ def from_dtype(dtype):
             res = st.just(dtype.str.split("[")[-1][:-1])
         else:
             res = st.sampled_from(TIME_RESOLUTIONS)
-        result = st.builds(dtype.type, st.integers(-2 ** 63, 2 ** 63 - 1), res)
+        result = st.builds(dtype.type, st.integers(-(2 ** 63), 2 ** 63 - 1), res)
     else:
         raise InvalidArgument(u"No strategy inference for {}".format(dtype))
     return result.map(dtype.type)

hypothesis-python/src/hypothesis/searchstrategy/attrs.py

@@ -104,7 +104,7 @@ def types_to_strategy(attrib, types):
     strategy from the mess."""
     # If we know types from the validator(s), that's sufficient.
     if len(types) == 1:
-        typ, = types
+        (typ,) = types
         if isinstance(typ, tuple):
             return st.one_of(*map(st.from_type, typ))
         return st.from_type(typ)

hypothesis-python/tests/common/__init__.py

@@ -91,7 +91,7 @@ def abc(x, y, z):
     sampled_from(("a", "b", "c")),
     integers(),
     integers(min_value=3),
-    integers(min_value=(-2 ** 32), max_value=(2 ** 64)),
+    integers(min_value=(-(2 ** 32)), max_value=(2 ** 64)),
     floats(),
     floats(min_value=-2.0, max_value=3.0),
     floats(),

hypothesis-python/tests/cover/test_conjecture_engine.py

@@ -55,7 +55,7 @@ def run_to_data(f):
         runner = ConjectureRunner(f, settings=TEST_SETTINGS)
         runner.run()
         assert runner.interesting_examples
-        last_data, = runner.interesting_examples.values()
+        (last_data,) = runner.interesting_examples.values()
         return last_data
 
 
@@ -120,7 +120,7 @@ def f(data):
 
     runner = ConjectureRunner(f, settings=settings(database=db), database_key=key)
     runner.run()
-    last_data, = runner.interesting_examples.values()
+    (last_data,) = runner.interesting_examples.values()
     assert last_data.buffer == value
     assert len(list(db.fetch(key))) == 1
 
@@ -159,7 +159,7 @@ def draw_bytes(data, n):
         database_key=b"key",
     )
     runner.run()
-    last_data, = runner.interesting_examples.values()
+    (last_data,) = runner.interesting_examples.values()
     assert last_data.status == Status.INTERESTING
     assert runner.shrinks == n
     in_db = set(db.data[runner.secondary_key])
@@ -987,7 +987,7 @@ def accept(f):
             )
             runner.cached_test_function(start)
             assert runner.interesting_examples
-            last_data, = runner.interesting_examples.values()
+            (last_data,) = runner.interesting_examples.values()
             return runner.new_shrinker(
                 last_data, lambda d: d.status == Status.INTERESTING
             )
@@ -1113,7 +1113,7 @@ def f(data):
         range(6, 11)
     )
 
-    v, = runner.interesting_examples.values()
+    (v,) = runner.interesting_examples.values()
 
     assert list(v.buffer) == [5]
 

hypothesis-python/tests/cover/test_conjecture_float_encoding.py

@@ -174,7 +174,7 @@ def test_function(data):
 def minimal_from(start, condition):
     runner = float_runner(start, condition)
     runner.shrink_interesting_examples()
-    v, = runner.interesting_examples.values()
+    (v,) = runner.interesting_examples.values()
     result = flt.draw_float(ConjectureData.for_buffer(v.buffer))
     assert condition(result)
     return result
@@ -235,5 +235,5 @@ def test_converts_floats_to_integer_form(f):
 
     runner = float_runner(f, lambda g: g == f)
     runner.shrink_interesting_examples()
-    v, = runner.interesting_examples.values()
+    (v,) = runner.interesting_examples.values()
     assert v.buffer[:-1] < buf

hypothesis-python/tests/cover/test_phases.py

@@ -101,7 +101,7 @@ def test_usage(i):
     with pytest.raises(ValueError):
         test_usage()
 
-    saved, = [v for k, v in database.data.items() if b"coverage" not in k]
+    (saved,) = [v for k, v in database.data.items() if b"coverage" not in k]
     assert len(saved) == 1
 
 

hypothesis-python/tests/nocover/test_regressions.py

@@ -41,7 +41,7 @@ def f(x):
         f()
 
     assert len(log) == 1
-    record, = log
+    (record,) = log
     # We got the warning we expected, from the right file
     assert isinstance(record.message, HypothesisDeprecationWarning)
     assert record.message.args == (msg,)

hypothesis-python/tests/nocover/test_simple_numbers.py

@@ -84,7 +84,7 @@ def test_single_integer_range_is_range():
 
 
 def test_minimal_small_number_in_large_range():
-    assert minimal(integers((-2 ** 32), 2 ** 32), lambda x: x >= 101) == 101
+    assert minimal(integers((-(2 ** 32)), 2 ** 32), lambda x: x >= 101) == 101
 
 
 def test_minimal_small_sum_float_list():

hypothesis-python/tests/quality/test_integers.py

@@ -98,7 +98,7 @@ def f(data):
 
     assert runner.interesting_examples
 
-    v, = runner.interesting_examples.values()
+    (v,) = runner.interesting_examples.values()
 
     shrinker = runner.new_shrinker(v, lambda x: x.status == Status.INTERESTING)
 

hypothesis-python/tests/quality/test_poisoned_lists.py

@@ -103,6 +103,6 @@ def test_function(data):
 
     runner = TrialRunner(test_function, random=Random(seed), settings=TRIAL_SETTINGS)
     runner.run()
-    v, = runner.interesting_examples.values()
+    (v,) = runner.interesting_examples.values()
     result = ConjectureData.for_buffer(v.buffer).draw(strategy)
     assert len(result) == 1

hypothesis-python/tests/quality/test_poisoned_trees.py

@@ -103,7 +103,7 @@ def test_function(data):
 
     runner.shrink_interesting_examples()
 
-    data, = runner.interesting_examples.values()
+    (data,) = runner.interesting_examples.values()
 
     assert len(ConjectureData.for_buffer(data.buffer).draw(strat)) == size
 
@@ -135,6 +135,6 @@ def test_function_with_poison(data):
         assert runner.interesting_examples
         runner.shrink_interesting_examples()
 
-        shrunk, = runner.interesting_examples.values()
+        (shrunk,) = runner.interesting_examples.values()
 
         assert ConjectureData.for_buffer(shrunk.buffer).draw(strat) == (POISON,)

hypothesis-python/tests/quality/test_zig_zagging.py

@@ -102,7 +102,7 @@ def test_function(data):
 
     runner.run()
 
-    v, = runner.interesting_examples.values()
+    (v,) = runner.interesting_examples.values()
 
     data = ConjectureData.for_buffer(v.buffer)
 

requirements/tools.txt

@@ -13,7 +13,7 @@ autoflake==1.3.1
 babel==2.7.0              # via sphinx
 backcall==0.1.0           # via ipython
 bandit==1.6.2
-black==19.3b0
+black==19.10b0
 blacken-docs==1.3.0
 bleach==3.1.0             # via readme-renderer
 certifi==2019.9.11        # via requests