Blacken all files

Also add pyproject.toml to avoid re-running black on ropetest

black currently has poor multi-line string treatment for dedent()-ed code.

I've ran aneeshusa's black branch psf/black#1879
on ropetest instead, which leaves dedent()-ed lines alone; however
most people likely will be running mainline black which would have
mucked these formatting , so we're adding an exclusion rule in
pyproject.toml prevent people from auto-formatting ropetest.

pyproject.toml

@@ -0,0 +1,4 @@
+[tool.black]
+
+target-version = ['py27', 'py33', 'py34', 'py35', 'py36', 'py37', 'py38', 'py39']
+exclude = 'ropetest'

rope/__init__.py

@@ -1,7 +1,7 @@
 """rope, a python refactoring library"""
 
 INFO = __doc__
-VERSION = '0.20.1'
+VERSION = "0.20.1"
 COPYRIGHT = """\
 Copyright (C) 2019-2021 Matej Cepl
 Copyright (C) 2015-2018 Nicholas Smith

rope/base/__init__.py

@@ -5,4 +5,4 @@
 
 """
 
-__all__ = ['project', 'libutils', 'exceptions']
+__all__ = ["project", "libutils", "exceptions"]

rope/base/arguments.py

@@ -47,14 +47,12 @@ def create_arguments(primary, pyfunction, call_node, scope):
     args.extend(call_node.keywords)
     called = call_node.func
     # XXX: Handle constructors
-    if _is_method_call(primary, pyfunction) and \
-       isinstance(called, ast.Attribute):
+    if _is_method_call(primary, pyfunction) and isinstance(called, ast.Attribute):
         args.insert(0, called.value)
     return Arguments(args, scope)
 
 
 class ObjectArguments(object):
-
     def __init__(self, pynames):
         self.pynames = pynames
 
@@ -75,7 +73,6 @@ def get_instance_pyname(self):
 
 
 class MixedArguments(object):
-
     def __init__(self, pyname, arguments, scope):
         """`argumens` is an instance of `Arguments`"""
         self.pyname = pyname
@@ -101,11 +98,14 @@ def _is_method_call(primary, pyfunction):
     if primary is None:
         return False
     pyobject = primary.get_object()
-    if isinstance(pyobject.get_type(), rope.base.pyobjects.PyClass) and \
-       isinstance(pyfunction, rope.base.pyobjects.PyFunction) and \
-       isinstance(pyfunction.parent, rope.base.pyobjects.PyClass):
+    if (
+        isinstance(pyobject.get_type(), rope.base.pyobjects.PyClass)
+        and isinstance(pyfunction, rope.base.pyobjects.PyFunction)
+        and isinstance(pyfunction.parent, rope.base.pyobjects.PyClass)
+    ):
         return True
-    if isinstance(pyobject.get_type(), rope.base.pyobjects.AbstractClass) and \
-       isinstance(pyfunction, rope.base.builtins.BuiltinFunction):
+    if isinstance(
+        pyobject.get_type(), rope.base.pyobjects.AbstractClass
+    ) and isinstance(pyfunction, rope.base.builtins.BuiltinFunction):
         return True
     return False

rope/base/ast.py

@@ -10,16 +10,16 @@
     unicode = str
 
 
-def parse(source, filename='<string>'):
+def parse(source, filename="<string>"):
     # NOTE: the raw string should be given to `compile` function
     if isinstance(source, unicode):
         source = fscommands.unicode_to_file_data(source)
-    if b'\r' in source:
-        source = source.replace(b'\r\n', b'\n').replace(b'\r', b'\n')
-    if not source.endswith(b'\n'):
-        source += b'\n'
+    if b"\r" in source:
+        source = source.replace(b"\r\n", b"\n").replace(b"\r", b"\n")
+    if not source.endswith(b"\n"):
+        source += b"\n"
     try:
-        return ast.parse(source, filename='<unknown>')
+        return ast.parse(source, filename="<unknown>")
     except (TypeError, ValueError) as e:
         error = SyntaxError()
         error.lineno = 1
@@ -30,13 +30,13 @@ def parse(source, filename='<string>'):
 
 def walk(node, walker):
     """Walk the syntax tree"""
-    method_name = '_' + node.__class__.__name__
+    method_name = "_" + node.__class__.__name__
     method = getattr(walker, method_name, None)
     if method is not None:
         if isinstance(node, ast.ImportFrom) and node.module is None:
             # In python < 2.7 ``node.module == ''`` for relative imports
             # but for python 2.7 it is None. Generalizing it to ''.
-            node.module = ''
+            node.module = ""
         return method(node)
     for child in get_child_nodes(node):
         walk(child, walker)
@@ -70,7 +70,7 @@ def get_children(node):
     result = []
     if node._fields is not None:
         for name in node._fields:
-            if name in ['lineno', 'col_offset']:
+            if name in ["lineno", "col_offset"]:
                 continue
             child = getattr(node, name)
             result.append(child)

rope/base/astutils.py

@@ -19,7 +19,6 @@ def get_name_levels(node):
 
 
 class _NodeNameCollector(object):
-
     def __init__(self, levels=None):
         self.names = []
         self.levels = levels
@@ -34,7 +33,7 @@ def _add_node(self, node):
         self._added(node, new_levels)
 
     def _added(self, node, levels):
-        if hasattr(node, 'id'):
+        if hasattr(node, "id"):
             self.names.append((node.id, levels))
 
     def _Name(self, node):