cleanup: Remove redundant parentheses

22 files changed, 84 insertions, 84 deletions

diff --git a/mesonbuild/astinterpreter.py b/mesonbuild/astinterpreter.py
index 1cdf523..32d0845 100644
--- a/mesonbuild/astinterpreter.py
+++ b/mesonbuild/astinterpreter.py
@@ -160,7 +160,7 @@ class AstInterpreter(interpreterbase.InterpreterBase):
         assert(isinstance(args, mparser.ArgumentNode))
         if args.incorrect_order():
             raise InvalidArguments('All keyword arguments must be after positional arguments.')
-        return (args.arguments, args.kwargs)
+        return args.arguments, args.kwargs
 
     def transform(self):
         self.load_root_meson_file()
diff --git a/mesonbuild/backend/backends.py b/mesonbuild/backend/backends.py
index 26cba40..e46c2c5 100644
--- a/mesonbuild/backend/backends.py
+++ b/mesonbuild/backend/backends.py
@@ -22,7 +22,7 @@ import json
 import subprocess
 from ..mesonlib import MesonException, get_compiler_for_source, classify_unity_sources
 
-class CleanTrees():
+class CleanTrees:
     '''
     Directories outputted by custom targets that have to be manually cleaned
     because on Linux `ninja clean` only deletes empty directories.
@@ -31,7 +31,7 @@ class CleanTrees():
         self.build_dir = build_dir
         self.trees = trees
 
-class InstallData():
+class InstallData:
     def __init__(self, source_dir, build_dir, prefix):
         self.source_dir = source_dir
         self.build_dir = build_dir
@@ -45,7 +45,7 @@ class InstallData():
         self.install_scripts = []
         self.install_subdirs = []
 
-class ExecutableSerialisation():
+class ExecutableSerialisation:
     def __init__(self, name, fname, cmd_args, env, is_cross, exe_wrapper,
                  workdir, extra_paths, capture):
         self.name = name
@@ -76,7 +76,7 @@ class TestSerialisation:
 
 # This class contains the basic functionality that is needed by all backends.
 # Feel free to move stuff in and out of it as you see fit.
-class Backend():
+class Backend:
     def __init__(self, build):
         self.build = build
         self.environment = build.environment
@@ -247,7 +247,7 @@ class Backend():
         benchmark_data = os.path.join(self.environment.get_scratch_dir(), 'meson_benchmark_setup.dat')
         with open(benchmark_data, 'wb') as datafile:
             self.write_benchmark_file(datafile)
-        return (test_data, benchmark_data)
+        return test_data, benchmark_data
 
     def determine_linker(self, target):
         '''
@@ -651,7 +651,7 @@ class Backend():
         #
         # https://github.com/mesonbuild/meson/pull/737
         cmd = [i.replace('\\', '/') for i in cmd]
-        return (srcs, ofilenames, cmd)
+        return srcs, ofilenames, cmd
 
     def run_postconf_scripts(self):
         env = {'MESON_SOURCE_ROOT': self.environment.get_source_dir(),
diff --git a/mesonbuild/backend/ninjabackend.py b/mesonbuild/backend/ninjabackend.py
index cdffb76..8de9b5a 100644
--- a/mesonbuild/backend/ninjabackend.py
+++ b/mesonbuild/backend/ninjabackend.py
@@ -36,7 +36,7 @@ else:
 def ninja_quote(text):
     return text.replace(' ', '$ ').replace(':', '$:')
 
-class RawFilename():
+class RawFilename:
     """
     Used when a filename is already relative to the root build directory, so
     that we know not to add the target's private build directory to it.
@@ -56,7 +56,7 @@ class RawFilename():
     def startswith(self, s):
         return self.fname.startswith(s)
 
-class NinjaBuildElement():
+class NinjaBuildElement:
     def __init__(self, all_outputs, outfilenames, rule, infilenames):
         if isinstance(outfilenames, str):
             self.outfilenames = [outfilenames]
@@ -830,7 +830,7 @@ int dummy;
             else:
                 raise InvalidArguments('Unknown resource file %s.' % r)
             args.append(a)
-        return (args, deps)
+        return args, deps
 
     def generate_cs_target(self, target, outfile):
         buildtype = self.environment.coredata.get_builtin_option('buildtype')
@@ -962,7 +962,7 @@ int dummy;
                     raise InvalidArguments(msg)
                 # Store 'somefile.vala': GeneratedList (or CustomTarget)
                 srctype[f] = gensrc
-        return (vala, vapi, (others, othersgen))
+        return vala, vapi, (others, othersgen)
 
     def generate_vala_compile(self, target, outfile):
         """Vala is compiled into C. Set up all necessary build steps here."""
@@ -1139,7 +1139,7 @@ int dummy;
                 srcs.append(i)
             else:
                 others.append(i)
-        return (srcs, others)
+        return srcs, others
 
     def generate_swift_target(self, target, outfile):
         module_name = self.target_swift_modulename(target)
@@ -1933,7 +1933,7 @@ rule FORTRAN_DEP_HACK
         commands += pch_args
         commands += self.get_compile_debugfile_args(compiler, target, objname)
         dep = dst + '.' + compiler.get_depfile_suffix()
-        return (commands, dep, dst, [objname])
+        return commands, dep, dst, [objname]
 
     def generate_gcc_pch_command(self, target, compiler, pch):
         commands = []
@@ -1941,7 +1941,7 @@ rule FORTRAN_DEP_HACK
         dst = os.path.join(self.get_target_private_dir(target),
                            os.path.split(pch)[-1] + '.' + compiler.get_pch_suffix())
         dep = dst + '.' + compiler.get_depfile_suffix()
-        return (commands, dep, dst, []) # Gcc does not create an object file during pch generation.
+        return commands, dep, dst, []  # Gcc does not create an object file during pch generation.
 
     def generate_pch(self, target, outfile):
         cstr = ''
diff --git a/mesonbuild/backend/vs2010backend.py b/mesonbuild/backend/vs2010backend.py
index 0cfbe90..525b7f0 100644
--- a/mesonbuild/backend/vs2010backend.py
+++ b/mesonbuild/backend/vs2010backend.py
@@ -47,7 +47,7 @@ def split_o_flags_args(args):
             o_flags += ['/O' + f for f in flags]
     return o_flags
 
-class RegenInfo():
+class RegenInfo:
     def __init__(self, source_dir, build_dir, depfiles):
         self.source_dir = source_dir
         self.build_dir = build_dir
@@ -313,7 +313,7 @@ class Vs2010Backend(backends.Backend):
             else:
                 # Everything that is not an object or source file is considered a header.
                 headers.append(i)
-        return (sources, headers, objects, languages)
+        return sources, headers, objects, languages
 
     def target_to_build_root(self, target):
         if target.subdir == '':
@@ -512,7 +512,7 @@ class Vs2010Backend(backends.Backend):
                     libs.append(arg)
             else:
                 other.append(arg)
-        return (lpaths, libs, other)
+        return lpaths, libs, other
 
     def _get_cl_compiler(self, target):
         for lang, c in target.compilers.items():
diff --git a/mesonbuild/build.py b/mesonbuild/build.py
index 2ca1404..ceae49b 100644
--- a/mesonbuild/build.py
+++ b/mesonbuild/build.py
@@ -158,7 +158,7 @@ class Build:
 
         return link_args.get(compiler.get_language(), [])
 
-class IncludeDirs():
+class IncludeDirs:
     def __init__(self, curdir, dirs, is_system, extra_build_dirs=None):
         self.curdir = curdir
         self.incdirs = dirs
@@ -179,7 +179,7 @@ class IncludeDirs():
     def get_extra_build_dirs(self):
         return self.extra_build_dirs
 
-class ExtractedObjects():
+class ExtractedObjects:
     '''
     Holds a list of sources for which the objects must be extracted
     '''
@@ -219,7 +219,7 @@ class ExtractedObjects():
     def get_want_all_objects(self):
         return self.want_all_objects
 
-class EnvironmentVariables():
+class EnvironmentVariables:
     def __init__(self):
         self.envvars = []
 
@@ -857,7 +857,7 @@ You probably should put it in link_with instead.''')
         return False
 
 
-class Generator():
+class Generator:
     def __init__(self, args, kwargs):
         if len(args) != 1:
             raise InvalidArguments('Generator requires exactly one positional argument: the executable')
@@ -940,7 +940,7 @@ class Generator():
         return output
 
 
-class GeneratedList():
+class GeneratedList:
     def __init__(self, generator, extra_args=[]):
         if hasattr(generator, 'held_object'):
             generator = generator.held_object
@@ -1178,7 +1178,7 @@ class SharedLibrary(BuildTarget):
         # Visual Studio module-definitions file
         if 'vs_module_defs' in kwargs:
             path = kwargs['vs_module_defs']
-            if (os.path.isabs(path)):
+            if os.path.isabs(path):
                 self.vs_module_defs = File.from_absolute_file(path)
             else:
                 self.vs_module_defs = File.from_source_file(environment.source_dir, self.subdir, path)
@@ -1456,7 +1456,7 @@ class Jar(BuildTarget):
     def get_java_args(self):
         return self.java_args
 
-class ConfigureFile():
+class ConfigureFile:
 
     def __init__(self, subdir, sourcename, targetname, configuration_data):
         self.subdir = subdir
@@ -1482,7 +1482,7 @@ class ConfigureFile():
     def get_target_name(self):
         return self.targetname
 
-class ConfigurationData():
+class ConfigurationData:
     def __init__(self):
         super().__init__()
         self.values = {}
@@ -1501,7 +1501,7 @@ class ConfigurationData():
 
 # A bit poorly named, but this represents plain data files to copy
 # during install.
-class Data():
+class Data:
     def __init__(self, sources, install_dir):
         self.sources = sources
         self.install_dir = install_dir
diff --git a/mesonbuild/compilers.py b/mesonbuild/compilers.py
index 649e6c1..22ee003 100644
--- a/mesonbuild/compilers.py
+++ b/mesonbuild/compilers.py
@@ -315,14 +315,14 @@ class CrossNoRunException(MesonException):
     def __init(self, *args, **kwargs):
         Exception.__init__(self, *args, **kwargs)
 
-class RunResult():
+class RunResult:
     def __init__(self, compiled, returncode=999, stdout='UNDEFINED', stderr='UNDEFINED'):
         self.compiled = compiled
         self.returncode = returncode
         self.stdout = stdout
         self.stderr = stderr
 
-class Compiler():
+class Compiler:
     def __init__(self, exelist, version):
         if isinstance(exelist, str):
             self.exelist = [exelist]
@@ -561,7 +561,7 @@ class CCompiler(Compiler):
         return []
 
     def split_shlib_to_parts(self, fname):
-        return (None, fname)
+        return None, fname
 
     # The default behaviour is this, override in
     # OSX and MSVC.
@@ -1250,7 +1250,7 @@ class MonoCompiler(Compiler):
         return ['-warnaserror']
 
     def split_shlib_to_parts(self, fname):
-        return (None, fname)
+        return None, fname
 
     def build_rpath_args(self, build_dir, rpath_paths, install_rpath):
         return []
@@ -1331,7 +1331,7 @@ class JavaCompiler(Compiler):
         return ['-Werror']
 
     def split_shlib_to_parts(self, fname):
-        return (None, fname)
+        return None, fname
 
     def build_rpath_args(self, build_dir, rpath_paths, install_rpath):
         return []
@@ -1925,7 +1925,7 @@ class VisualStudioCCompiler(CCompiler):
 
     def gen_pch_args(self, header, source, pchname):
         objname = os.path.splitext(pchname)[0] + '.obj'
-        return (objname, ['/Yc' + header, '/Fp' + pchname, '/Fo' + objname])
+        return objname, ['/Yc' + header, '/Fp' + pchname, '/Fo' + objname]
 
     def gen_import_library_args(self, implibname):
         "The name of the outputted import library"
@@ -2140,7 +2140,7 @@ class GnuCompiler:
         return 'gch'
 
     def split_shlib_to_parts(self, fname):
-        return (os.path.split(fname)[0], fname)
+        return os.path.split(fname)[0], fname
 
     def get_soname_args(self, prefix, shlib_name, suffix, path, soversion, is_shared_module):
         return get_gcc_soname_args(self.gcc_type, prefix, shlib_name, suffix, path, soversion, is_shared_module)
@@ -2260,7 +2260,7 @@ class GnuObjCPPCompiler(GnuCompiler, ObjCPPCompiler):
         # too strict without this and always fails.
         return self.get_no_optimization_args() + ['-fpermissive']
 
-class ClangCompiler():
+class ClangCompiler:
     def __init__(self, clang_type):
         self.id = 'clang'
         self.clang_type = clang_type
@@ -2421,7 +2421,7 @@ class IntelCompiler:
         return os.path.split(header_name)[-1] + '.' + self.get_pch_suffix()
 
     def split_shlib_to_parts(self, fname):
-        return (os.path.split(fname)[0], fname)
+        return os.path.split(fname)[0], fname
 
     def get_soname_args(self, prefix, shlib_name, suffix, path, soversion, is_shared_module):
         if self.icc_type == ICC_STANDARD:
@@ -2584,7 +2584,7 @@ end program prog
         return gnulike_buildtype_linker_args[buildtype]
 
     def split_shlib_to_parts(self, fname):
-        return (os.path.split(fname)[0], fname)
+        return os.path.split(fname)[0], fname
 
     def get_soname_args(self, prefix, shlib_name, suffix, path, soversion, is_shared_module):
         return get_gcc_soname_args(self.gcc_type, prefix, shlib_name, suffix, path, soversion, is_shared_module)
@@ -2777,7 +2777,7 @@ class NAGFortranCompiler(FortranCompiler):
         return NAGFortranCompiler.std_warn_args
 
 
-class VisualStudioLinker():
+class VisualStudioLinker:
     always_args = ['/NOLOGO']
 
     def __init__(self, exelist):
@@ -2824,7 +2824,7 @@ class VisualStudioLinker():
         pdbarr += ['pdb']
         return ['/DEBUG', '/PDB:' + '.'.join(pdbarr)]
 
-class ArLinker():
+class ArLinker:
 
     def __init__(self, exelist):
         self.exelist = exelist
diff --git a/mesonbuild/coredata.py b/mesonbuild/coredata.py
index 080067d..a7be91f 100644
--- a/mesonbuild/coredata.py
+++ b/mesonbuild/coredata.py
@@ -105,7 +105,7 @@ class UserStringArrayOption(UserOption):
 # invocations of Meson. It is roughly the same thing as
 # cmakecache.
 
-class CoreData():
+class CoreData:
 
     def __init__(self, options):
         self.guid = str(uuid.uuid4()).upper()
diff --git a/mesonbuild/dependencies.py b/mesonbuild/dependencies.py
index 478722d..f6db323 100644
--- a/mesonbuild/dependencies.py
+++ b/mesonbuild/dependencies.py
@@ -33,7 +33,7 @@ class DependencyException(MesonException):
     def __init__(self, *args, **kwargs):
         MesonException.__init__(self, *args, **kwargs)
 
-class Dependency():
+class Dependency:
     def __init__(self, type_name='unknown'):
         self.name = "null"
         self.is_found = False
@@ -189,7 +189,7 @@ class PkgConfigDependency(Dependency):
 
     def _call_pkgbin(self, args):
         p, out = Popen_safe([self.pkgbin] + args, env=os.environ)[0:2]
-        return (p.returncode, out.strip())
+        return p.returncode, out.strip()
 
     def _set_cargs(self):
         ret, out = self._call_pkgbin(['--cflags', self.name])
@@ -392,7 +392,7 @@ class WxDependency(Dependency):
     def found(self):
         return self.is_found
 
-class ExternalProgram():
+class ExternalProgram:
     windows_exts = ('exe', 'com', 'bat')
 
     def __init__(self, name, fullpath=None, silent=False, search_dir=None):
diff --git a/mesonbuild/environment.py b/mesonbuild/environment.py
index 7b10496..e143b0b 100644
--- a/mesonbuild/environment.py
+++ b/mesonbuild/environment.py
@@ -34,7 +34,7 @@ def find_coverage_tools():
         lcov_exe = None
     if not mesonlib.exe_exists([genhtml_exe, '--version']):
         genhtml_exe = None
-    return (gcovr_exe, lcov_exe, genhtml_exe)
+    return gcovr_exe, lcov_exe, genhtml_exe
 
 def detect_ninja(version='1.5'):
     for n in ['ninja', 'ninja-build']:
@@ -182,7 +182,7 @@ def search_version(text):
         return match.group(0)
     return 'unknown version'
 
-class Environment():
+class Environment:
     private_dir = 'meson-private'
     log_dir = 'meson-logs'
     coredata_file = os.path.join(private_dir, 'coredata.dat')
@@ -798,7 +798,7 @@ def get_args_from_envvars(compiler):
         compiler_is_linker = (compiler.get_exelist() == compiler.get_linker_exelist())
 
     if lang not in ('c', 'cpp', 'objc', 'objcpp', 'fortran', 'd'):
-        return ([], [])
+        return [], []
 
     # Compile flags
     cflags_mapping = {'c': 'CFLAGS',
@@ -829,9 +829,9 @@ def get_args_from_envvars(compiler):
     log_var('CPPFLAGS', preproc_flags)
     compile_flags += preproc_flags.split()
 
-    return (compile_flags, link_flags)
+    return compile_flags, link_flags
 
-class CrossBuildInfo():
+class CrossBuildInfo:
     def __init__(self, filename):
         self.config = {'properties': {}}
         self.parse_datafile(filename)
diff --git a/mesonbuild/interpreter.py b/mesonbuild/interpreter.py
index bee635f..b5cd0b6 100644
--- a/mesonbuild/interpreter.py
+++ b/mesonbuild/interpreter.py
@@ -186,7 +186,7 @@ class ConfigurationDataHolder(MutableInterpreterObject):
         if desc is not None and not isinstance(desc, str):
             raise InterpreterException('Description must be a string.')
 
-        return (name, val, desc)
+        return name, val, desc
 
     def set_method(self, args, kwargs):
         (name, val, desc) = self.validate_args(args, kwargs)
@@ -1314,7 +1314,7 @@ class Interpreter(InterpreterBase):
 
     def module_method_callback(self, return_object):
         if not isinstance(return_object, ModuleReturnValue):
-            assert(False)
+            assert False
             raise InterpreterException('Bug in module, it returned an invalid object')
         invalues = return_object.new_objects
         self.process_new_values(invalues)
@@ -1711,7 +1711,7 @@ class Interpreter(InterpreterBase):
                     new_options[i].set_value(value)
         new_options.update(self.coredata.compiler_options)
         self.coredata.compiler_options = new_options
-        return (comp, cross_comp)
+        return comp, cross_comp
 
     def add_languages(self, args, required):
         success = True
diff --git a/mesonbuild/interpreterbase.py b/mesonbuild/interpreterbase.py
index 80413e2..e4dd58b 100644
--- a/mesonbuild/interpreterbase.py
+++ b/mesonbuild/interpreterbase.py
@@ -65,7 +65,7 @@ class InvalidCode(InterpreterException):
 class InvalidArguments(InterpreterException):
     pass
 
-class InterpreterObject():
+class InterpreterObject:
     def __init__(self):
         self.methods = {}
 
@@ -520,7 +520,7 @@ class InterpreterBase:
             reduced_kw[key] = self.evaluate_statement(a)
         if not isinstance(reduced_pos, list):
             reduced_pos = [reduced_pos]
-        return (reduced_pos, reduced_kw)
+        return reduced_pos, reduced_kw
 
     def flatten(self, args):
         if isinstance(args, mparser.StringNode):
diff --git a/mesonbuild/mconf.py b/mesonbuild/mconf.py
index dfdcb94..c921409 100644
--- a/mesonbuild/mconf.py
+++ b/mesonbuild/mconf.py
@@ -231,7 +231,7 @@ def run(args):
     except ConfException as e:
         print('Meson configurator encountered an error:\n')
         print(e)
-        return(1)
+        return 1
     return 0
 
 if __name__ == '__main__':
diff --git a/mesonbuild/mesonlib.py b/mesonbuild/mesonlib.py
index c4f6769..305d945 100644
--- a/mesonbuild/mesonlib.py
+++ b/mesonbuild/mesonlib.py
@@ -208,7 +208,7 @@ def version_compare_many(vstr1, conditions):
             not_found.append(req)
         else:
             found.append(req)
-    return (not_found == [], not_found, found)
+    return not_found == [], not_found, found
 
 def default_libdir():
     if is_debianlike():
@@ -395,4 +395,4 @@ def Popen_safe(args, write=None, stderr=subprocess.PIPE, **kwargs):
                          stdout=subprocess.PIPE,
                          stderr=stderr, **kwargs)
     o, e = p.communicate(write)
-    return (p, o, e)
+    return p, o, e
diff --git a/mesonbuild/mesonmain.py b/mesonbuild/mesonmain.py
index 23501f8..37b8055 100644
--- a/mesonbuild/mesonmain.py
+++ b/mesonbuild/mesonmain.py
@@ -69,7 +69,7 @@ parser.add_argument('-v', '--version', action='version',
                     version=coredata.version)
 parser.add_argument('directories', nargs='*')
 
-class MesonApp():
+class MesonApp:
 
     def __init__(self, dir1, dir2, script_launcher, handshake, options, original_cmd_line_args):
         (self.source_dir, self.build_dir) = self.validate_dirs(dir1, dir2, handshake)
@@ -106,9 +106,9 @@ class MesonApp():
         if self.has_build_file(ndir1):
             if self.has_build_file(ndir2):
                 raise RuntimeError('Both directories contain a build file %s.' % environment.build_filename)
-            return (ndir1, ndir2)
+            return ndir1, ndir2
         if self.has_build_file(ndir2):
-            return (ndir2, ndir1)
+            return ndir2, ndir1
         raise RuntimeError('Neither directory contains a build file %s.' % environment.build_filename)
 
     def validate_dirs(self, dir1, dir2, handshake):
@@ -126,7 +126,7 @@ If you want to change option values, use the mesonconf tool instead.'''
         else:
             if handshake:
                 raise RuntimeError('Something went terribly wrong. Please file a bug.')
-        return (src_dir, build_dir)
+        return src_dir, build_dir
 
     def check_pkgconfig_envvar(self, env):
         curvar = os.environ.get('PKG_CONFIG_PATH', '')
diff --git a/mesonbuild/mlog.py b/mesonbuild/mlog.py
index cded2b0..a4f93d0 100644
--- a/mesonbuild/mlog.py
+++ b/mesonbuild/mlog.py
@@ -32,7 +32,7 @@ def shutdown():
     if log_file is not None:
         log_file.close()
 
-class AnsiDecorator():
+class AnsiDecorator:
     plain_code = "\033[0m"
 
     def __init__(self, text, code):
diff --git a/mesonbuild/mparser.py b/mesonbuild/mparser.py
index a005317..f8a0d2b 100644
--- a/mesonbuild/mparser.py
+++ b/mesonbuild/mparser.py
@@ -80,7 +80,7 @@ class Lexer:
         par_count = 0
         bracket_count = 0
         col = 0
-        while(loc < len(code)):
+        while loc < len(code):
             matched = False
             value = None
             for (tid, reg) in self.token_specification:
@@ -274,7 +274,7 @@ class PlusAssignmentNode:
         assert(isinstance(var_name, str))
         self.value = value
 
-class ForeachClauseNode():
+class ForeachClauseNode:
     def __init__(self, lineno, colno, varname, items, block):
         self.lineno = lineno
         self.colno = colno
@@ -282,28 +282,28 @@ class ForeachClauseNode():
         self.items = items
         self.block = block
 
-class IfClauseNode():
+class IfClauseNode:
     def __init__(self, lineno, colno):
         self.lineno = lineno
         self.colno = colno
         self.ifs = []
         self.elseblock = EmptyNode()
 
-class UMinusNode():
+class UMinusNode:
     def __init__(self, current_location, value):
         self.subdir = current_location.subdir
         self.lineno = current_location.lineno
         self.colno = current_location.colno
         self.value = value
 
-class IfNode():
+class IfNode:
     def __init__(self, lineno, colno, condition, block):
         self.lineno = lineno
         self.colno = colno
         self.condition = condition
         self.block = block
 
-class TernaryNode():
+class TernaryNode:
     def __init__(self, lineno, colno, condition, trueblock, falseblock):
         self.lineno = lineno
         self.colno = colno
@@ -311,7 +311,7 @@ class TernaryNode():
         self.trueblock = trueblock
         self.falseblock = falseblock
 
-class ArgumentNode():
+class ArgumentNode:
     def __init__(self, token):
         self.lineno = token.lineno
         self.colno = token.colno
diff --git a/mesonbuild/optinterpreter.py b/mesonbuild/optinterpreter.py
index 089eb2c..10b8fab 100644
--- a/mesonbuild/optinterpreter.py
+++ b/mesonbuild/optinterpreter.py
@@ -128,7 +128,7 @@ class OptionInterpreter:
                 raise OptionException('Keyword argument name is not a string.')
             a = args.kwargs[key]
             reduced_kw[key] = self.reduce_single(a)
-        return (reduced_pos, reduced_kw)
+        return reduced_pos, reduced_kw
 
     def evaluate_statement(self, node):
         if not isinstance(node, mparser.FunctionNode):
diff --git a/mesonbuild/scripts/depfixer.py b/mesonbuild/scripts/depfixer.py
index 193d5b6..1404619 100644
--- a/mesonbuild/scripts/depfixer.py
+++ b/mesonbuild/scripts/depfixer.py
@@ -23,7 +23,7 @@ DT_STRTAB = 5
 DT_SONAME = 14
 DT_MIPS_RLD_MAP_REL = 1879048245
 
-class DataSizes():
+class DataSizes:
     def __init__(self, ptrsize, is_le):
         if is_le:
             p = '<'
@@ -150,7 +150,7 @@ class Elf(DataSizes):
             is_le = False
         else:
             sys.exit('File "%s" has unknown ELF endianness.' % self.bfile)
-        return (ptrsize, is_le)
+        return ptrsize, is_le
 
     def parse_header(self):
         self.bf.seek(0)
diff --git a/mesonbuild/wrap/wraptool.py b/mesonbuild/wrap/wraptool.py
index 2663465..79bd5df 100644
--- a/mesonbuild/wrap/wraptool.py
+++ b/mesonbuild/wrap/wraptool.py
@@ -74,7 +74,7 @@ def get_latest_version(name):
     jd = get_result(API_ROOT + 'query/get_latest/' + name)
     branch = jd['branch']
     revision = jd['revision']
-    return (branch, revision)
+    return branch, revision
 
 def install(name):
     if not os.path.isdir('subprojects'):
@@ -102,7 +102,7 @@ def get_current_version(wrapfile):
     arr = patch_url.split('/')
     branch = arr[-3]
     revision = int(arr[-2])
-    return (branch, revision, cp['directory'], cp['source_filename'], cp['patch_filename'])
+    return branch, revision, cp['directory'], cp['source_filename'], cp['patch_filename']
 
 def update(name):
     if not os.path.isdir('subprojects'):
diff --git a/mesontest.py b/mesontest.py
index e334a46..415ae4f 100755
--- a/mesontest.py
+++ b/mesontest.py
@@ -88,7 +88,7 @@ parser.add_argument('--setup', default=None, dest='setup',
                     help='Which test setup to use.')
 parser.add_argument('args', nargs='*')
 
-class TestRun():
+class TestRun:
     def __init__(self, res, returncode, should_fail, duration, stdo, stde, cmd,
                  env):
         self.res = res
@@ -337,7 +337,7 @@ TIMEOUT: %4d
         if ':' in suite:
             return suite.split(':', 1)
         else:
-            return (suite, "")
+            return suite, ""
 
     def test_in_suites(test, suites):
         for suite in suites:
@@ -398,7 +398,7 @@ TIMEOUT: %4d
 
     def open_log_files(self):
         if not self.options.logbase or self.options.verbose:
-            return (None, None, None, None)
+            return None, None, None, None
 
         logfile_base = os.path.join(self.options.wd, 'meson-logs', self.options.logbase)
 
@@ -416,7 +416,7 @@ TIMEOUT: %4d
         logfile.write('Log of Meson test suite run on %s.\n\n'
                       % datetime.datetime.now().isoformat())
 
-        return (logfile, logfilename, jsonlogfile, jsonlogfilename)
+        return logfile, logfilename, jsonlogfile, jsonlogfilename
 
     def get_wrapper(self):
         wrap = []
diff --git a/run_project_tests.py b/run_project_tests.py
index 1f48be7..4715dbb 100755
--- a/run_project_tests.py
+++ b/run_project_tests.py
@@ -43,7 +43,7 @@ class TestResult:
         self.buildtime = buildtime
         self.testtime = testtime
 
-class AutoDeletedDir():
+class AutoDeletedDir:
     def __init__(self, d):
         self.dir = d
 
@@ -202,7 +202,7 @@ def run_configure_inprocess(commandlist):
     finally:
         sys.stdout = old_stdout
         sys.stderr = old_stderr
-    return (returncode, mystdout.getvalue(), mystderr.getvalue())
+    return returncode, mystdout.getvalue(), mystderr.getvalue()
 
 def run_test_inprocess(testdir):
     old_stdout = sys.stdout
@@ -218,7 +218,7 @@ def run_test_inprocess(testdir):
         sys.stdout = old_stdout
         sys.stderr = old_stderr
         os.chdir(old_cwd)
-    return (max(returncode_test, returncode_benchmark), mystdout.getvalue(), mystderr.getvalue())
+    return max(returncode_test, returncode_benchmark), mystdout.getvalue(), mystderr.getvalue()
 
 def parse_test_args(testdir):
     args = []
@@ -457,7 +457,7 @@ def run_tests(all_tests, log_name_base, extra_args):
     print("Total build time: %.2fs" % build_time)
     print("Total test time: %.2fs" % test_time)
     ET.ElementTree(element=junit_root).write(xmlname, xml_declaration=True, encoding='UTF-8')
-    return (passing_tests, failing_tests, skipped_tests)
+    return passing_tests, failing_tests, skipped_tests
 
 def check_file(fname):
     linenum = 1
@@ -522,7 +522,7 @@ def generate_prebuilt():
         object_suffix = 'o'
     objectfile = generate_pb_object(compiler, object_suffix)
     stlibfile = generate_pb_static(compiler, object_suffix, static_suffix)
-    return (objectfile, stlibfile)
+    return objectfile, stlibfile
 
 if __name__ == '__main__':
     parser = argparse.ArgumentParser(description="Run the test suite of Meson.")
diff --git a/tools/cmake2meson.py b/tools/cmake2meson.py
index 9f2c7c0..80bcaa4 100755
--- a/tools/cmake2meson.py
+++ b/tools/cmake2meson.py
@@ -24,7 +24,7 @@ class Token:
         self.lineno = 0
         self.colno = 0
 
-class Statement():
+class Statement:
     def __init__(self, name, args):
         self.name = name
         self.args = args
@@ -48,7 +48,7 @@ class Lexer:
         line_start = 0
         loc = 0
         col = 0
-        while(loc < len(code)):
+        while loc < len(code):
             matched = False
             for (tid, reg) in self.token_specification:
                 mo = reg.match(code, loc)
@@ -83,7 +83,7 @@ class Lexer:
             if not matched:
                 raise RuntimeError('Lexer got confused line %d column %d' % (lineno, col))
 
-class Parser():
+class Parser:
     def __init__(self, code):
         self.stream = Lexer().lex(code)
         self.getsym()