intel: various python cleanups

Signed-off-by: Eric Engestrom <eric.engestrom@intel.com>
Reviewed-by: Emil Velikov <emil.velikov@collabora.com>

src/intel/genxml/gen_bits_header.py

@@ -25,7 +25,6 @@ from __future__ import (
 
 import argparse
 import os
-import sys
 import xml.parsers.expat
 
 from mako.template import Template

src/intel/genxml/gen_pack_header.py

@@ -219,9 +219,9 @@ def safe_name(name):
 def num_from_str(num_str):
     if num_str.lower().startswith('0x'):
         return int(num_str, base=16)
-    else:
-        assert not num_str.startswith('0'), 'octals numbers not allowed'
-        return int(num_str)
+
+    assert not num_str.startswith('0'), 'octals numbers not allowed'
+    return int(num_str)
 
 class Field(object):
     ufixed_pattern = re.compile(r"u(\d+)\.(\d+)")
@@ -306,7 +306,7 @@ class Field(object):
         print("   %-36s %s%s;" % (type, self.name, dim))
 
         prefix = ""
-        if len(self.values) > 0 and self.default == None:
+        if self.values and self.default == None:
             if self.prefix:
                 prefix = self.prefix + "_"
 
@@ -340,7 +340,7 @@ class Group(object):
 
     def collect_dwords(self, dwords, start, dim):
         for field in self.fields:
-            if type(field) is Group:
+            if isinstance(field, Group):
                 if field.count == 1:
                     field.collect_dwords(dwords, start + field.start, dim)
                 else:
@@ -424,7 +424,7 @@ class Group(object):
             # to the dword for those fields.
             field_index = 0
             for field in dw.fields:
-                if type(field) is Field and field.is_struct_type():
+                if isinstance(field, Field) and field.is_struct_type():
                     name = field.name + field.dim
                     print("")
                     print("   uint32_t v%d_%d;" % (index, field_index))
@@ -490,7 +490,7 @@ class Group(object):
                     non_address_fields.append("/* unhandled field %s, type %s */\n" % \
                                               (name, field.type))
 
-            if len(non_address_fields) > 0:
+            if non_address_fields:
                 print(" |\n".join("      " + f for f in non_address_fields) + ";")
 
             if dw.size == 32:
@@ -531,8 +531,7 @@ class Parser(object):
     def gen_prefix(self, name):
         if name[0] == "_":
             return 'GEN%s%s' % (self.gen, name)
-        else:
-            return 'GEN%s_%s' % (self.gen, name)
+        return 'GEN%s_%s' % (self.gen, name)
 
     def gen_guard(self):
         return self.gen_prefix("PACK_H")
@@ -629,7 +628,7 @@ class Parser(object):
 
     def emit_instruction(self):
         name = self.instruction
-        if not self.length == None:
+        if not self.length is None:
             print('#define %-33s %6d' %
                   (self.gen_prefix(name + "_length"), self.length))
         print('#define %-33s %6d' %
@@ -637,9 +636,9 @@ class Parser(object):
 
         default_fields = []
         for field in self.group.fields:
-            if not type(field) is Field:
+            if not isinstance(field, Field):
                 continue
-            if field.default == None:
+            if field.default is None:
                 continue
             default_fields.append("   .%-35s = %6d" % (field.name, field.default))
 
@@ -654,11 +653,11 @@ class Parser(object):
 
     def emit_register(self):
         name = self.register
-        if not self.reg_num == None:
+        if not self.reg_num is None:
             print('#define %-33s 0x%04x' %
                   (self.gen_prefix(name + "_num"), self.reg_num))
 
-        if not self.length == None:
+        if not self.length is None:
             print('#define %-33s %6d' %
                   (self.gen_prefix(name + "_length"), self.length))
 
@@ -667,7 +666,7 @@ class Parser(object):
 
     def emit_struct(self):
         name = self.struct
-        if not self.length == None:
+        if not self.length is None:
             print('#define %-33s %6d' %
                   (self.gen_prefix(name + "_length"), self.length))
 

src/intel/genxml/gen_zipped_file.py

@@ -23,7 +23,6 @@
 #
 
 from __future__ import print_function
-import os
 import sys
 import zlib
 import xml.etree.cElementTree as et

src/intel/isl/gen_format_layout.py

@@ -25,7 +25,6 @@ from __future__ import absolute_import, division, print_function
 import argparse
 import csv
 import re
-import textwrap
 
 from mako import template
 
@@ -150,7 +149,7 @@ class Channel(object):
             self.size = int(grouped.group('size'))
 
         # Default the start bit to -1
-        self.start = -1;
+        self.start = -1
 
 
 class Format(object):
@@ -177,7 +176,7 @@ class Format(object):
         bit = 0
         for c in self.order:
             chan = getattr(self, c)
-            chan.start = bit;
+            chan.start = bit
             bit = bit + chan.size
 
         # alpha doesn't have a colorspace of it's own.
@@ -217,13 +216,13 @@ def get_srgb_to_linear_map(formats):
             ('U8SRGB',  'FLT16'),
         ]
 
-        found = False;
+        found = False
         for rep in replacements:
             rgb_name = fmt.name.replace(rep[0], rep[1])
             if rgb_name in names:
                 found = True
                 yield fmt.name, rgb_name
-                break;
+                break
 
         # We should have found a format name
         assert found

src/intel/vulkan/anv_extensions.py

@@ -32,10 +32,9 @@ import xml.etree.cElementTree as et
 def _bool_to_c_expr(b):
     if b is True:
         return 'true'
-    elif b is False:
+    if b is False:
         return 'false'
-    else:
-        return b
+    return b
 
 class Extension:
     def __init__(self, name, ext_version, enable):
@@ -142,7 +141,7 @@ class VkVersion:
         # VK_MAKE_VERSION macro
         assert self.major < 1024 and self.minor < 1024
         assert self.patch is None or self.patch < 4096
-        assert(str(self) == string)
+        assert str(self) == string
 
     def __str__(self):
         ver_list = [str(self.major), str(self.minor)]