py: Reformat all Python files consistently

This commit is the unmodified results of running
```
black $(git ls-files '*.py')
```
with black version 19.10b0. See #2046.

Signed-off-by: Philip Withnall <pwithnall@endlessos.org>

gio/gdbus-2.0/codegen/utils.py

@@ -25,47 +25,55 @@ import sys
 
 # pylint: disable=too-few-public-methods
 class Color:
-    '''ANSI Terminal colors'''
-    GREEN = '\033[1;32m'
-    BLUE = '\033[1;34m'
-    YELLOW = '\033[1;33m'
-    RED = '\033[1;31m'
-    END = '\033[0m'
+    """ANSI Terminal colors"""
 
-def print_color(msg, color=Color.END, prefix='MESSAGE'):
-    '''Print a string with a color prefix'''
+    GREEN = "\033[1;32m"
+    BLUE = "\033[1;34m"
+    YELLOW = "\033[1;33m"
+    RED = "\033[1;31m"
+    END = "\033[0m"
+
+
+def print_color(msg, color=Color.END, prefix="MESSAGE"):
+    """Print a string with a color prefix"""
     if os.isatty(sys.stderr.fileno()):
-        real_prefix = '{start}{prefix}{end}'.format(start=color, prefix=prefix, end=Color.END)
+        real_prefix = "{start}{prefix}{end}".format(
+            start=color, prefix=prefix, end=Color.END
+        )
     else:
         real_prefix = prefix
-    sys.stderr.write('{prefix}: {msg}\n'.format(prefix=real_prefix, msg=msg))
+    sys.stderr.write("{prefix}: {msg}\n".format(prefix=real_prefix, msg=msg))
+
 
 def print_error(msg):
-    '''Print an error, and terminate'''
-    print_color(msg, color=Color.RED, prefix='ERROR')
+    """Print an error, and terminate"""
+    print_color(msg, color=Color.RED, prefix="ERROR")
     sys.exit(1)
 
+
 def print_warning(msg, fatal=False):
-    '''Print a warning, and optionally terminate'''
+    """Print a warning, and optionally terminate"""
     if fatal:
         color = Color.RED
-        prefix = 'ERROR'
+        prefix = "ERROR"
     else:
         color = Color.YELLOW
-        prefix = 'WARNING'
+        prefix = "WARNING"
     print_color(msg, color, prefix)
     if fatal:
         sys.exit(1)
 
+
 def print_info(msg):
-    '''Print a message'''
-    print_color(msg, color=Color.GREEN, prefix='INFO')
+    """Print a message"""
+    print_color(msg, color=Color.GREEN, prefix="INFO")
+
 
 def strip_dots(s):
-    ret = ''
+    ret = ""
     force_upper = False
     for c in s:
-        if c == '.':
+        if c == ".":
             force_upper = True
         else:
             if force_upper:
@@ -75,19 +83,21 @@ def strip_dots(s):
                 ret += c
     return ret
 
+
 def dots_to_hyphens(s):
-    return s.replace('.', '-')
+    return s.replace(".", "-")
+
 
 def camel_case_to_uscore(s):
-    ret = ''
+    ret = ""
     insert_uscore = False
     prev_was_lower = False
-    initial = True;
+    initial = True
     for c in s:
         # Keep initial underscores in camel case
-        if initial and c == '_':
-            ret += '_'
-            continue;
+        if initial and c == "_":
+            ret += "_"
+            continue
         initial = False
 
         if c.isupper():
@@ -97,16 +107,18 @@ def camel_case_to_uscore(s):
         else:
             prev_was_lower = True
         if insert_uscore:
-            ret += '_'
+            ret += "_"
         ret += c.lower()
         insert_uscore = False
     return ret
 
+
 def is_ugly_case(s):
-    if s and s.find('_') > 0:
+    if s and s.find("_") > 0:
         return True
     return False
 
+
 def lookup_annotation(annotations, key):
     if annotations:
         for a in annotations:
@@ -114,35 +126,39 @@ def lookup_annotation(annotations, key):
                 return a.value
     return None
 
+
 def lookup_docs(annotations):
-    s = lookup_annotation(annotations, 'org.gtk.GDBus.DocString')
+    s = lookup_annotation(annotations, "org.gtk.GDBus.DocString")
     if s is None:
-        return ''
+        return ""
     else:
         return s
 
+
 def lookup_since(annotations):
-    s = lookup_annotation(annotations, 'org.gtk.GDBus.Since')
+    s = lookup_annotation(annotations, "org.gtk.GDBus.Since")
     if s is None:
-        return ''
+        return ""
     else:
         return s
 
+
 def lookup_brief_docs(annotations):
-    s = lookup_annotation(annotations, 'org.gtk.GDBus.DocString.Short')
+    s = lookup_annotation(annotations, "org.gtk.GDBus.DocString.Short")
     if s is None:
-        return ''
+        return ""
     else:
         return s
 
+
 def version_cmp_key(key):
     # If the 'since' version is 'UNRELEASED', compare higher than anything else
     # If it is empty put a 0 in its place as this will
     # allow LooseVersion to work and will always compare lower.
-    if key[0] == 'UNRELEASED':
-        v = '9999'
+    if key[0] == "UNRELEASED":
+        v = "9999"
     elif key[0]:
         v = str(key[0])
     else:
-        v = '0'
+        v = "0"
     return (distutils.version.LooseVersion(v), key[1])