Update project to use modern Python features and idioms

Run the pyupgrade tool across the project to use modern language
features.

- Use set literals
- Use dict comprehension
- Remove unnecessary numeric indexes in format string
- Remove unnecessary extra parentheses

1 files changed, 6 insertions, 6 deletions

diff --git a/pygments/lexers/c_cpp.py b/pygments/lexers/c_cpp.py
index e676a8af..5d84a377 100644
--- a/pygments/lexers/c_cpp.py
+++ b/pygments/lexers/c_cpp.py
@@ -144,21 +144,21 @@ class CFamilyLexer(RegexLexer):
         ]
     }
 
-    stdlib_types = set((
+    stdlib_types = {
         'size_t', 'ssize_t', 'off_t', 'wchar_t', 'ptrdiff_t', 'sig_atomic_t', 'fpos_t',
         'clock_t', 'time_t', 'va_list', 'jmp_buf', 'FILE', 'DIR', 'div_t', 'ldiv_t',
-        'mbstate_t', 'wctrans_t', 'wint_t', 'wctype_t'))
-    c99_types = set((
+        'mbstate_t', 'wctrans_t', 'wint_t', 'wctype_t'}
+    c99_types = {
         '_Bool', '_Complex', 'int8_t', 'int16_t', 'int32_t', 'int64_t', 'uint8_t',
         'uint16_t', 'uint32_t', 'uint64_t', 'int_least8_t', 'int_least16_t',
         'int_least32_t', 'int_least64_t', 'uint_least8_t', 'uint_least16_t',
         'uint_least32_t', 'uint_least64_t', 'int_fast8_t', 'int_fast16_t', 'int_fast32_t',
         'int_fast64_t', 'uint_fast8_t', 'uint_fast16_t', 'uint_fast32_t', 'uint_fast64_t',
-        'intptr_t', 'uintptr_t', 'intmax_t', 'uintmax_t'))
-    linux_types = set((
+        'intptr_t', 'uintptr_t', 'intmax_t', 'uintmax_t'}
+    linux_types = {
         'clockid_t', 'cpu_set_t', 'cpumask_t', 'dev_t', 'gid_t', 'id_t', 'ino_t', 'key_t',
         'mode_t', 'nfds_t', 'pid_t', 'rlim_t', 'sig_t', 'sighandler_t', 'siginfo_t',
-        'sigset_t', 'sigval_t', 'socklen_t', 'timer_t', 'uid_t'))
+        'sigset_t', 'sigval_t', 'socklen_t', 'timer_t', 'uid_t'}
 
     def __init__(self, **options):
         self.stdlibhighlighting = get_bool_opt(options, 'stdlibhighlighting', True)