معرفی شرکت ها
bitflags-1.1.3
تبلیغات ما
مشتریان به طور فزاینده ای آنلاین هستند. تبلیغات می تواند به آنها کمک کند تا کسب و کار شما را پیدا کنند.
مشاهده بیشتر
تبلیغات ما
مشتریان به طور فزاینده ای آنلاین هستند. تبلیغات می تواند به آنها کمک کند تا کسب و کار شما را پیدا کنند.
مشاهده بیشتر
تبلیغات ما
مشتریان به طور فزاینده ای آنلاین هستند. تبلیغات می تواند به آنها کمک کند تا کسب و کار شما را پیدا کنند.
مشاهده بیشتر
تبلیغات ما
مشتریان به طور فزاینده ای آنلاین هستند. تبلیغات می تواند به آنها کمک کند تا کسب و کار شما را پیدا کنند.
مشاهده بیشتر
تبلیغات ما
مشتریان به طور فزاینده ای آنلاین هستند. تبلیغات می تواند به آنها کمک کند تا کسب و کار شما را پیدا کنند.
مشاهده بیشترتوضیحات
Bit flags implementation using a C Union. This library removes the need to use ctypes and helps you quickly access what bits are toggled.
| ویژگی | مقدار |
|---|---|
| سیستم عامل | - |
| نام فایل | bitflags-1.1.3 |
| نام | bitflags |
| نسخه کتابخانه | 1.1.3 |
| نگهدارنده | [] |
| ایمیل نگهدارنده | [] |
| نویسنده | Justin Engel |
| ایمیل نویسنده | jtengel08@gmail.com |
| آدرس صفحه اصلی | https://github.com/justengel/bitflags |
| آدرس اینترنتی | https://pypi.org/project/bitflags/ |
| مجوز | MIT |
========
bitflags
========
Bit flags implementation using a C Union. This library removes the need to use ctypes and helps you quickly access what
bits are toggled.
This class is built off of the Bit Manipulation guide found at https://wiki.python.org/moin/BitManipulation under the
Bit fields section.
This library includes a class based approach to bit flags (BitFlags) and a one time dynamic bit flags object (bitflags).
The individual bits can always be accessed with 'flag.bit_0', 'flag.bit_1', 'flag.bit_2', ...
Example - BitFlags
==================
This is the class based approach.
.. code-block:: python
from bitflags import BitFlags
class MyFlags(BitFlags):
options = {0: "flag1", 1: "flag2", 2: "flag3", 3: "flag4", 4: "Something Happened"}
f = MyFlags(0)
assert f.value == 0
assert int(f) == 0
f.value = 0b101 # 5 - bin(5) shows the bit values (0b101)
assert f.value == 0b101
# You can always access the bit value with 'bit_X'
# Access all of the bits (The number of bits can be changed by setting the class attribute nbits or nbytes
print(f.bit_7, f.bit_6, f.bit_5, f.bit_4, f.bit_3, f.bit_2, f.bit_1, f.bit_0)
# 0 0 0 0 0 1 0 1
# Access the custom flags as attributes
assert f.flag1 == 1
assert f.flag2 == 0
assert f.flag3 == 1
assert f.flag4 == 0
assert f.something_happened == 0
# Get a list of flag options
assert f.get_flags() == ['flag1', 'flag3']
# Convert to use the data types
assert str(f) == 'flag1, flag3'
assert int(f) == 5
assert bytes(f) == b'\x05'
This class was made to be flexible if you want the attributes to be different from the display options.
.. code-block:: python
from bitflags import BitFlags
class MyFlags(BitFlags):
options = {0: "Failure", 1: "Warning", 2: "System 2% Overloaded"}
f = MyFlags(0b111)
assert hasattr(f, 'failure')
assert hasattr(f, 'warning')
assert hasattr(f, 'system_2_overloaded')
assert f.get_flags() == ['Failure', 'Warning', 'System 2% Overloaded']
class SpecialFlags(BitFlags):
options = {0: "2% System Failure", # Note: variable name cannot start with a number!
1: "System Overloaded",
2: "System Safe"}
fields = {'system_failure': 0, 'system_overload': 1, 'safe': 2} # Custom variables to access the bits
s = SpecialFlags(7)
assert s.system_failure == 1
assert s.system_overload == 1
assert s.safe == 1
assert s.get_flags() == ["2% System Failure", "System Overloaded", "System Safe"]
s2 = SpecialFlags(1)
assert s.get_flags() == ["2% System Failure"]
You can also make a pattern for options.
.. code-block:: python
from bitflags import BitFlags
class MyFlags(BitFlags):
pattern = '%i'
f = MyFlags()
f.value = 0b101 # 5 - bin(5) shows the bit values (0b101)
assert f.value == 0b101
# Get a list of flag options
assert f.get_flags() == ['0', '2']
# Convert to use the data types
assert str(f) == '0, 2'
assert int(f) == 5
assert bytes(f) == b'\x05'
Example - bitflags
==================
The one time object bit flags. This is basically the same thing as BitFlags only the instance constructor allows you
to set the options, fields, and number of bits/bytes.
.. code-block:: python
from bitflags import bitflags
f = bitflags(flag1=1, flag3=1, options={0: "flag1", 1: "flag2", 2: "flag3", 3: "flag4", 4: "Something Happened"})
assert f.value == 0b101
assert f.flag1 == 1
assert f.flag2 == 0
assert f.flag3 == 1
assert f.flag4 == 0
assert f.something_happened == 0
# Change the fields that access the bits.
f.set_fields({'a': 0, 'b': 1, 'c': 2, 'd': 3})
assert f.a == f.bit_0
assert f.b == f.bit_1
assert f.c == f.bit_2
assert f.d == f.bit_3
The bitflags constructor uses type to create a new BitFlags class. This class isn't really re-usable unless you access
that class from the object that was created.
.. code-block:: python
from bitflags import bitflags
f = bitflags(flag1=1, flag3=1, options={0: "flag1", 1: "flag2", 2: "flag3", 3: "flag4", 4: "Something Happened"})
assert f.value == 0b101
f2 = type(f)(0b1)
assert f2.flag1 == 1
assert f2.value == 1
assert f.value == 0b101
f3 = f.__class__(0b10)
assert f3.flag1 == 0
assert f3.flag2 == 1
assert f3.value == 2
assert f2.value == 1
assert f.value == 0b101
If you want to use multiple bit flag objects that have the same fields then it is better to use BitFlags class
inheritance.
نحوه نصب
نصب پکیج whl bitflags-1.1.3:
pip install bitflags-1.1.3.whl
نصب پکیج tar.gz bitflags-1.1.3:
pip install bitflags-1.1.3.tar.gz