SystemHelper.page_size() - Code Metrics - fuzeman/Plex-Trakt-Scrobbler - Measure and Improve Code Quality continuously with Scrutinizer

SystemHelper.page_size() A
last analyzed 2018-03-05 01:11 UTC

↳ Parent: SystemHelper

Complexity

Conditions

Size

Total Lines

Duplication

Lines	0
Ratio	0 %

Code Coverage

Tests	6
CRAP Score	3.576

Importance

Changes

Metric	Value
c	0
b	0
f	0
dl	0
loc	13
ccs	6
cts	10
cp	0.6
rs	9.4285
cc	3
crap	3.576

from plugin.core.configuration import Configuration
from plugin.core.libraries.helpers.android import AndroidHelper
from plugin.core.libraries.helpers.arm import ArmHelper

from elftools.elf.attributes import AttributesSection
from elftools.elf.elffile import ELFFile
import logging
import os
import platform
import re
import sys

log = logging.getLogger(__name__)

_distributor_id_file_re = re.compile("(?:DISTRIB_ID\s*=)\s*(.*)", re.I)

_release_file_re = re.compile("(?:DISTRIB_RELEASE\s*=)\s*(.*)", re.I)

_codename_file_re = re.compile("(?:DISTRIB_CODENAME\s*=)\s*(.*)", re.I)


BITS_MAP = {
    '32bit': 'i386',
    '64bit': 'x86_64'
}

MACHINE_MAP = {
    ('32bit', 'i686'):  'i686',
    ('32bit', 'ppc' ):  'PowerPC'

}

MSVCR_MAP = {
    'msvcr110.dll': 'vc11',
    'msvcr120.dll': 'vc12',
    'msvcr130.dll': 'vc14'
}

NAME_MAP = {
    'Darwin': 'MacOSX'
}

FALLBACK_EXECUTABLE = '/bin/ls'


class SystemHelper(object):
    @classmethod
    def name(cls):
        """Retrieve system name (Windows, Linux, FreeBSD, MacOSX)"""

        system = platform.system()

        # Check for android platform
        if system == 'Linux' and AndroidHelper.is_android():
            system = 'Android'

        # Apply system name map
        if system in NAME_MAP:
            system = NAME_MAP[system]

        return system

    @classmethod
    def attributes(cls):
        # Retrieve platform attributes
        system = cls.name()

        release = platform.release()
        version = platform.version()

        # Build attributes dictionary
        result = {
            'cpu.architecture': cls.architecture(),
            'cpu.name': cls.cpu_name(),

            'os.system': system,

            'os.name': system,
            'os.release': release,
            'os.version': version
        }

        if system == 'Linux':
            # Update with linux distribution attributes
            result.update(cls.attributes_linux(
                release, version
            ))

        return result

    @classmethod
    def attributes_linux(cls, release=None, version=None):
        d_name, d_version, d_id = cls.distribution()

        # Build linux attributes dictionary
        result = {
            'os.name': None,
            'os.release': None,
            'os.version': None,

            'linux.release': release,
            'linux.version': version
        }
        

        if d_name:
            result['os.name'] = d_name

        if d_version:
            result['os.version'] = d_version

        if d_id:
            result['os.release'] = d_id

        return result

    @classmethod
    def architecture(cls):
        """Retrieve system architecture (i386, i686, x86_64)"""

        # Use `cpu_architecture` value from advanced configuration (if defined)
        cpu_architecture = Configuration.advanced['libraries'].get('cpu_architecture')

        if cpu_architecture:
            log.info('Using CPU Architecture from advanced configuration: %r', cpu_architecture)
            return cpu_architecture

        # Determine architecture from platform attributes
        bits, _ = platform.architecture()
        machine = platform.machine()

        # Check for ARM machine
        if (bits == '32bit' and machine.startswith('armv')) or machine.startswith('aarch64'):
            return cls.arm(machine)

        # Check (bits, machine) map
        machine_key = (bits, machine)

        if machine_key in MACHINE_MAP:
            return MACHINE_MAP[machine_key]

        # Check (bits) map
        if bits in BITS_MAP:
            return BITS_MAP[bits]

        log.error('Unable to determine system architecture - bits: %r, machine: %r', bits, machine)
        return None

    @classmethod
    def arm(cls, machine, float_type=None):
        # Determine ARM version
        floats, architecture = cls.arm_architecture(machine)

        if architecture is None:
            log.warn('Unable to use ARM libraries, unsupported ARM architecture (%r)?' % machine)

            return None

        if not floats:
            return architecture

        # Determine floating-point type
        float_type = float_type or cls.arm_float_type()

        if float_type is None:
            log.warn('Unable to use ARM libraries, unsupported floating-point type?')
            return None

        return '%s_%s' % (architecture, float_type)

    @classmethod
    def arm_architecture(cls, machine=None):
        # Read `machine` name if not provided
        if machine is None:
            machine = platform.machine()

        # Ensure `machine` is valid
        if not machine:
            return False, None

        # ARMv5
        if machine.startswith('armv5'):
            return True, 'armv5'

        # ARMv6
        if machine.startswith('armv6'):
            return True, 'armv6'

        # ARMv7
        if machine.startswith('armv7'):
            return True, 'armv7'

        # ARMv8 / AArch64
        if machine.startswith('armv8') or machine.startswith('aarch64'):
            return False, 'aarch64'

        return False, None

    @classmethod
    def arm_float_type(cls, executable_path=sys.executable):
        # Use `arm_float_type` value from advanced configuration (if defined)
        arm_float_type = Configuration.advanced['libraries'].get('arm_float_type')

        if arm_float_type:
            log.info('Using ARM Float Type from advanced configuration: %r', arm_float_type)
            return arm_float_type

        # Try determine float-type from "/lib" directories
        if os.path.exists('/lib/arm-linux-gnueabihf'):
            return 'hf'

        if os.path.exists('/lib/arm-linux-gnueabi'):
            return 'sf'

        # Determine system float-type from python executable
        section, attributes = cls.elf_attributes(executable_path)

        if not section or not attributes:
            return None

        if section.name != 'aeabi':
            log.warn('Unknown attributes section name: %r', section.name)
            return None

        # Assume hard-float if "tag_abi_vfp_args" is present
        if attributes.get('abi_vfp_args'):
            return 'hf'

        return 'sf'

    @classmethod
    def cpu_name(cls, executable_path=sys.executable):
        if cls.name() == 'Windows':
            return None

        # Retrieve CPU name from ELF
        section, attributes = cls.elf_attributes(executable_path)

        if not section or not attributes:
            return None

        name = attributes.get('cpu_name')

        if not name:
            return None

        return name.lower()

    @classmethod
    def cpu_type(cls, executable_path=sys.executable):
        # Use `cpu_type` value from advanced configuration (if defined)
        cpu_type = Configuration.advanced['libraries'].get('cpu_type')

        if cpu_type:
            log.info('Using CPU Type from advanced configuration: %r', cpu_type)
            return cpu_type

        # Try retrieve cpu type via "/proc/cpuinfo"
        try:
            _, _, cpu_type = ArmHelper.identifier()

            if cpu_type:
                return cpu_type
        except Exception as ex:

            log.warn('Unable to retrieve cpu type from "/proc/cpuinfo": %s', ex, exc_info=True)

        # Fallback to using the ELF cpu name
        return cls.cpu_name(executable_path)

    @classmethod
    def distribution(cls, distname='', version='', id='',

                     supported_dists=platform._supported_dists,
class MyParent:
    def __init__(self):
        self._x = 1;
        self.y = 2;

class MyChild(MyParent):
    def some_method(self):
        return self._x    # Ok, since accessed from a child class

class AnotherClass:
    def some_method(self, instance_of_my_child):
        return instance_of_my_child._x   # Would be flagged as AnotherClass is not
                                         # a child class of MyParent
                     full_distribution_name=1):

        # check for the Debian/Ubuntu /etc/lsb-release file first, needed so
        # that the distribution doesn't get identified as Debian.
        try:
            _distname = None
            _version = None
            _id = None

            with open("/etc/lsb-release", "rU") as fp:
                for line in fp:
                    # Distribution Name
                    m = _distributor_id_file_re.search(line)

                    if m:
                        _distname = m.group(1).strip()

                    # Release
                    m = _release_file_re.search(line)

                    if m:
                        _version = m.group(1).strip()

                    # ID
                    m = _codename_file_re.search(line)

                    if m:
                        _id = m.group(1).strip()

                if _distname and _version:
                    return _distname, _version, _id

        except (EnvironmentError, UnboundLocalError):
try:
    raises_exception()
except:  # Could be removed
    pass
            pass

        # Fallback to using the "platform" module
        return platform.linux_distribution(
            distname, version, id,
            supported_dists=supported_dists,
            full_distribution_name=full_distribution_name
        )

    @classmethod
    def elf_attributes(cls, executable_path=sys.executable):
        if cls.name() == 'MacOSX':
            log.info('Unable to retrieve ELF attributes on Mac OSX (not supported)')
            return None, None

        # Read attributes from "/bin/ls" if `executable_path` doesn't exist
        if not executable_path or not os.path.exists(executable_path):
            log.info('Executable at %r doesn\'t exist, using %r instead', executable_path, FALLBACK_EXECUTABLE)
            executable_path = FALLBACK_EXECUTABLE

        try:
            # Open executable stream
            stream = open(executable_path, 'rb')

            # Retrieve magic number (header)
            magic = stream.read(4)

            if magic != b'\x7fELF':
                log.warn('Unknown ELF format for %r (magic: %r)', executable_path, magic)
                return None, None

            stream.seek(0)

            # Parse ELF
            elf = ELFFile(stream)

            # Find attributes section
            section = cls._find_elf_section(elf, AttributesSection)

            if section is None:
                log.info('Unable to find attributes section in ELF: %r', executable_path)
                return None, None

            # Build dictionary of attributes
            attributes = dict([
                (attr.tag.lower(), attr.value)
                for attr in section.iter_attributes()
            ])

            return section, attributes
        except Exception as ex:

            log.warn('Unable to retrieve attributes from ELF %r: %s', executable_path, ex, exc_info=True)

        return None, None

    @classmethod
    def page_size(cls):
        try:
            import resource
            page_size = resource.getpagesize()

            if not page_size:
                return None

            return '%dk' % (page_size / 1024)
        except Exception as ex:

            log.warn('Unable to retrieve memory page size: %s', ex, exc_info=True)
            return None

    @staticmethod
    def _find_elf_section(elf, cls):
        for section in elf.iter_sections():
            if isinstance(section, cls):
                return section

        return None

    @classmethod
    def vcr_version(cls):
        try:
            import ctypes.util

            # Retrieve linked msvcr dll
            name = ctypes.util.find_msvcrt()

            # Return VC++ version from map
            if name not in MSVCR_MAP:
                log.error('Unknown VC++ runtime: %r', name)
                return None

            return MSVCR_MAP[name]
        except Exception:

            log.error('Unable to retrieve VC++ runtime version', exc_info=True)
            return None


1	1	from plugin.core.configuration import Configuration
2	1	from plugin.core.libraries.helpers.android import AndroidHelper
3	1	from plugin.core.libraries.helpers.arm import ArmHelper
4
5	1	from elftools.elf.attributes import AttributesSection
6	1	from elftools.elf.elffile import ELFFile
7	1	import logging
8	1	import os
9	1	import platform
10	1	import re
11	1	import sys
12
13	1	log = logging.getLogger(__name__)
14
15	1	_distributor_id_file_re = re.compile("(?:DISTRIB_ID\s=)\s(.*)", re.I)
		0 ignored issues – show Bug introduced 2016-11-18 22:00 UTC by Report Bug Copy Issue Report A suspicious escape sequence `\s` was found. Did you maybe forget to add an `r` prefix? Escape sequences in Python are generally interpreted according to rules similar to standard C. Only if strings are prefixed with `r` or `R` are they interpreted as regular expressions. The escape sequence that was used indicates that you might have intended to write a regular expression. Learn more about the available escape sequences. in the Python documentation. Loading history...
16	1	_release_file_re = re.compile("(?:DISTRIB_RELEASE\s=)\s(.*)", re.I)
		0 ignored issues – show Bug introduced 2016-11-18 22:00 UTC by Report Bug Copy Issue Report A suspicious escape sequence `\s` was found. Did you maybe forget to add an `r` prefix? Escape sequences in Python are generally interpreted according to rules similar to standard C. Only if strings are prefixed with `r` or `R` are they interpreted as regular expressions. The escape sequence that was used indicates that you might have intended to write a regular expression. Learn more about the available escape sequences. in the Python documentation. Loading history...
17	1	_codename_file_re = re.compile("(?:DISTRIB_CODENAME\s=)\s(.*)", re.I)
		0 ignored issues – show Bug introduced 2016-11-18 22:00 UTC by Report Bug Copy Issue Report A suspicious escape sequence `\s` was found. Did you maybe forget to add an `r` prefix? Escape sequences in Python are generally interpreted according to rules similar to standard C. Only if strings are prefixed with `r` or `R` are they interpreted as regular expressions. The escape sequence that was used indicates that you might have intended to write a regular expression. Learn more about the available escape sequences. in the Python documentation. Loading history...
18
19	1	BITS_MAP = {
20		'32bit': 'i386',
21		'64bit': 'x86_64'
22		}
23
24	1	MACHINE_MAP = {
25		('32bit', 'i686'): 'i686',
26		('32bit', 'ppc' ): 'PowerPC'
		0 ignored issues – show Coding Style introduced 2016-11-18 22:00 UTC by Report Bug Copy Issue Report No space allowed before bracket ('32bit', 'ppc' ): 'PowerPC' ^ Loading history...
27		}
28
29	1	MSVCR_MAP = {
30		'msvcr110.dll': 'vc11',
31		'msvcr120.dll': 'vc12',
32		'msvcr130.dll': 'vc14'
33		}
34
35	1	NAME_MAP = {
36		'Darwin': 'MacOSX'
37		}
38
39	1	FALLBACK_EXECUTABLE = '/bin/ls'
40
41
42	1	class SystemHelper(object):
43	1	@classmethod
44		def name(cls):
45		"""Retrieve system name (Windows, Linux, FreeBSD, MacOSX)"""
46
47	1	system = platform.system()
48
49		# Check for android platform
50	1	if system == 'Linux' and AndroidHelper.is_android():
51		system = 'Android'
52
53		# Apply system name map
54	1	if system in NAME_MAP:
55		system = NAME_MAP[system]
56
57	1	return system
58
59	1	@classmethod
60		def attributes(cls):
61		# Retrieve platform attributes
62		system = cls.name()
63
64		release = platform.release()
65		version = platform.version()
66
67		# Build attributes dictionary
68		result = {
69		'cpu.architecture': cls.architecture(),
70		'cpu.name': cls.cpu_name(),
71
72		'os.system': system,
73
74		'os.name': system,
75		'os.release': release,
76		'os.version': version
77		}
78
79		if system == 'Linux':
80		# Update with linux distribution attributes
81		result.update(cls.attributes_linux(
82		release, version
83		))
84
85		return result
86
87	1	@classmethod
88	1	def attributes_linux(cls, release=None, version=None):
89		d_name, d_version, d_id = cls.distribution()
90
91		# Build linux attributes dictionary
92		result = {
93		'os.name': None,
94		'os.release': None,
95		'os.version': None,
96
97		'linux.release': release,
98		'linux.version': version
99		}
100
		0 ignored issues – show Coding Style introduced 2016-11-18 22:00 UTC by Report Bug Copy Issue Report Trailing whitespace Loading history...
101		if d_name:
102		result['os.name'] = d_name
103
104		if d_version:
105		result['os.version'] = d_version
106
107		if d_id:
108		result['os.release'] = d_id
109
110		return result
111
112	1	@classmethod
113		def architecture(cls):
114		"""Retrieve system architecture (i386, i686, x86_64)"""
115
116		# Use `cpu_architecture` value from advanced configuration (if defined)
117	1	cpu_architecture = Configuration.advanced['libraries'].get('cpu_architecture')
118
119	1	if cpu_architecture:
120		log.info('Using CPU Architecture from advanced configuration: %r', cpu_architecture)
121		return cpu_architecture
122
123		# Determine architecture from platform attributes
124	1	bits, _ = platform.architecture()
125	1	machine = platform.machine()
126
127		# Check for ARM machine
128	1	if (bits == '32bit' and machine.startswith('armv')) or machine.startswith('aarch64'):
129		return cls.arm(machine)
130
131		# Check (bits, machine) map
132	1	machine_key = (bits, machine)
133
134	1	if machine_key in MACHINE_MAP:
135		return MACHINE_MAP[machine_key]
136
137		# Check (bits) map
138	1	if bits in BITS_MAP:
139	1	return BITS_MAP[bits]
140
141		log.error('Unable to determine system architecture - bits: %r, machine: %r', bits, machine)
142		return None
143
144	1	@classmethod
145	1	def arm(cls, machine, float_type=None):
146		# Determine ARM version
147	1	floats, architecture = cls.arm_architecture(machine)
148
149	1	if architecture is None:
150		log.warn('Unable to use ARM libraries, unsupported ARM architecture (%r)?' % machine)
		0 ignored issues – show Coding Style Best Practice introduced 2016-02-05 03:55 UTC by Report Bug Copy Issue Report Specify string format arguments as logging function parameters Loading history...
151		return None
152
153	1	if not floats:
154	1	return architecture
155
156		# Determine floating-point type
157	1	float_type = float_type or cls.arm_float_type()
158
159	1	if float_type is None:
160		log.warn('Unable to use ARM libraries, unsupported floating-point type?')
161		return None
162
163	1	return '%s_%s' % (architecture, float_type)
164
165	1	@classmethod
166	1	def arm_architecture(cls, machine=None):
167		# Read `machine` name if not provided
168	1	if machine is None:
169		machine = platform.machine()
170
171		# Ensure `machine` is valid
172	1	if not machine:
173		return False, None
174
175		# ARMv5
176	1	if machine.startswith('armv5'):
177	1	return True, 'armv5'
178
179		# ARMv6
180	1	if machine.startswith('armv6'):
181	1	return True, 'armv6'
182
183		# ARMv7
184	1	if machine.startswith('armv7'):
185	1	return True, 'armv7'
186
187		# ARMv8 / AArch64
188	1	if machine.startswith('armv8') or machine.startswith('aarch64'):
189	1	return False, 'aarch64'
190
191		return False, None
192
193	1	@classmethod
194	1	def arm_float_type(cls, executable_path=sys.executable):
195		# Use `arm_float_type` value from advanced configuration (if defined)
196		arm_float_type = Configuration.advanced['libraries'].get('arm_float_type')
197
198		if arm_float_type:
199		log.info('Using ARM Float Type from advanced configuration: %r', arm_float_type)
200		return arm_float_type
201
202		# Try determine float-type from "/lib" directories
203		if os.path.exists('/lib/arm-linux-gnueabihf'):
204		return 'hf'
205
206		if os.path.exists('/lib/arm-linux-gnueabi'):
207		return 'sf'
208
209		# Determine system float-type from python executable
210		section, attributes = cls.elf_attributes(executable_path)
211
212		if not section or not attributes:
213		return None
214
215		if section.name != 'aeabi':
216		log.warn('Unknown attributes section name: %r', section.name)
217		return None
218
219		# Assume hard-float if "tag_abi_vfp_args" is present
220		if attributes.get('abi_vfp_args'):
221		return 'hf'
222
223		return 'sf'
224
225	1	@classmethod
226	1	def cpu_name(cls, executable_path=sys.executable):
227	1	if cls.name() == 'Windows':
228		return None
229
230		# Retrieve CPU name from ELF
231	1	section, attributes = cls.elf_attributes(executable_path)
232
233	1	if not section or not attributes:
234	1	return None
235
236		name = attributes.get('cpu_name')
237
238		if not name:
239		return None
240
241		return name.lower()
242
243	1	@classmethod
244	1	def cpu_type(cls, executable_path=sys.executable):
245		# Use `cpu_type` value from advanced configuration (if defined)
246	1	cpu_type = Configuration.advanced['libraries'].get('cpu_type')
247
248	1	if cpu_type:
249		log.info('Using CPU Type from advanced configuration: %r', cpu_type)
250		return cpu_type
251
252		# Try retrieve cpu type via "/proc/cpuinfo"
253	1	try:
254	1	_, _, cpu_type = ArmHelper.identifier()
255
256	1	if cpu_type:
257		return cpu_type
258		except Exception as ex:
		0 ignored issues – show Best Practice introduced 2016-11-18 22:00 UTC by Report Bug Copy Issue Report Catching very general exceptions such as `Exception` is usually not recommended. Generally, you would want to handle very specific errors in the exception handler. This ensure that you do not hide other types of errors which should be fixed. So, unless you specifically plan to handle any error, consider adding a more specific exception. Loading history...
259		log.warn('Unable to retrieve cpu type from "/proc/cpuinfo": %s', ex, exc_info=True)
260
261		# Fallback to using the ELF cpu name
262	1	return cls.cpu_name(executable_path)
263
264	1	@classmethod
265	1	def distribution(cls, distname='', version='', id='',
		0 ignored issues – show Bug Best Practice introduced 2016-11-18 22:00 UTC by Report Bug Copy Issue Report This seems to re-define the built-in `id`. It is generally discouraged to redefine built-ins as this makes code very hard to read. Loading history...
266		supported_dists=platform._supported_dists,
		0 ignored issues – show Coding Style Best Practice introduced 2016-11-18 22:00 UTC by Report Bug Copy Issue Report It seems like `_supported_dists` was declared protected and should not be accessed from this context. Prefixing a member variable `_` is usually regarded as the equivalent of declaring it with protected visibility that exists in other languages. Consequentially, such a member should only be accessed from the same class or a child class: class MyParent: def __init__(self): self._x = 1; self.y = 2; class MyChild(MyParent): def some_method(self): return self._x # Ok, since accessed from a child class class AnotherClass: def some_method(self, instance_of_my_child): return instance_of_my_child._x # Would be flagged as AnotherClass is not # a child class of MyParent Loading history...
267		full_distribution_name=1):
268
269		# check for the Debian/Ubuntu /etc/lsb-release file first, needed so
270		# that the distribution doesn't get identified as Debian.
271		try:
272		_distname = None
273		_version = None
274		_id = None
275
276		with open("/etc/lsb-release", "rU") as fp:
277		for line in fp:
278		# Distribution Name
279		m = _distributor_id_file_re.search(line)
280
281		if m:
282		_distname = m.group(1).strip()
283
284		# Release
285		m = _release_file_re.search(line)
286
287		if m:
288		_version = m.group(1).strip()
289
290		# ID
291		m = _codename_file_re.search(line)
292
293		if m:
294		_id = m.group(1).strip()
295
296		if _distname and _version:
297		return _distname, _version, _id
298
299		except (EnvironmentError, UnboundLocalError):
		0 ignored issues – show Unused Code introduced 2016-11-18 22:00 UTC by Report Bug Copy Issue Report This except handler seems to be unused and could be removed. Except handlers which only contain `pass` and do not have an `else` clause can usually simply be removed: try: raises_exception() except: # Could be removed pass Loading history...
300		pass
301
302		# Fallback to using the "platform" module
303		return platform.linux_distribution(
304		distname, version, id,
305		supported_dists=supported_dists,
306		full_distribution_name=full_distribution_name
307		)
308
309	1	@classmethod
310	1	def elf_attributes(cls, executable_path=sys.executable):
311	1	if cls.name() == 'MacOSX':
312		log.info('Unable to retrieve ELF attributes on Mac OSX (not supported)')
313		return None, None
314
315		# Read attributes from "/bin/ls" if `executable_path` doesn't exist
316	1	if not executable_path or not os.path.exists(executable_path):
317		log.info('Executable at %r doesn\'t exist, using %r instead', executable_path, FALLBACK_EXECUTABLE)
318		executable_path = FALLBACK_EXECUTABLE
319
320	1	try:
321		# Open executable stream
322	1	stream = open(executable_path, 'rb')
323
324		# Retrieve magic number (header)
325	1	magic = stream.read(4)
326
327	1	if magic != b'\x7fELF':
328		log.warn('Unknown ELF format for %r (magic: %r)', executable_path, magic)
329		return None, None
330
331	1	stream.seek(0)
332
333		# Parse ELF
334	1	elf = ELFFile(stream)
335
336		# Find attributes section
337	1	section = cls._find_elf_section(elf, AttributesSection)
338
339	1	if section is None:
340	1	log.info('Unable to find attributes section in ELF: %r', executable_path)
341	1	return None, None
342
343		# Build dictionary of attributes
344		attributes = dict([
345		(attr.tag.lower(), attr.value)
346		for attr in section.iter_attributes()
347		])
348
349		return section, attributes
350		except Exception as ex:
		0 ignored issues – show Best Practice introduced 2016-11-18 22:00 UTC by Report Bug Copy Issue Report Catching very general exceptions such as `Exception` is usually not recommended. Generally, you would want to handle very specific errors in the exception handler. This ensure that you do not hide other types of errors which should be fixed. So, unless you specifically plan to handle any error, consider adding a more specific exception. Loading history...
351		log.warn('Unable to retrieve attributes from ELF %r: %s', executable_path, ex, exc_info=True)
352
353		return None, None
354
355	1	@classmethod
356		def page_size(cls):
357	1	try:
358	1	import resource
359	1	page_size = resource.getpagesize()
360
361	1	if not page_size:
362		return None
363
364	1	return '%dk' % (page_size / 1024)
365		except Exception as ex:
		0 ignored issues – show Best Practice introduced 2016-11-18 22:00 UTC by Report Bug Copy Issue Report Catching very general exceptions such as `Exception` is usually not recommended. Generally, you would want to handle very specific errors in the exception handler. This ensure that you do not hide other types of errors which should be fixed. So, unless you specifically plan to handle any error, consider adding a more specific exception. Loading history...
366		log.warn('Unable to retrieve memory page size: %s', ex, exc_info=True)
367		return None
368
369	1	@staticmethod
370		def _find_elf_section(elf, cls):
371	1	for section in elf.iter_sections():
372	1	if isinstance(section, cls):
373		return section
374
375	1	return None
376
377	1	@classmethod
378		def vcr_version(cls):
379		try:
380		import ctypes.util
381
382		# Retrieve linked msvcr dll
383		name = ctypes.util.find_msvcrt()
384
385		# Return VC++ version from map
386		if name not in MSVCR_MAP:
387		log.error('Unknown VC++ runtime: %r', name)
388		return None
389
390		return MSVCR_MAP[name]
391		except Exception:
		0 ignored issues – show Best Practice introduced 2016-02-06 10:54 UTC by Report Bug Copy Issue Report Catching very general exceptions such as `Exception` is usually not recommended. Generally, you would want to handle very specific errors in the exception handler. This ensure that you do not hide other types of errors which should be fixed. So, unless you specifically plan to handle any error, consider adding a more specific exception. Loading history...
392		log.error('Unable to retrieve VC++ runtime version', exc_info=True)
393		return None
394

fuzeman / Plex-Trakt-Scrobbler

SystemHelper.page_size() A last analyzed 2018-03-05 01:11 UTC

Complexity

Size

Duplication

Code Coverage

Importance

Duplication Side-by-Side

Filter issues like

SystemHelper.page_size() A
last analyzed 2018-03-05 01:11 UTC