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📁 ..
📄 __init__.pxd(179 B)
📄 __init__.py(3.72 KB)
📄 __init__.pyi(781 B)
📁 __pycache__
📄 _future.py(19.69 KB)
📄 asyncio.py(5.68 KB)
📁 auth
📁 backend
📄 decorators.py(5.03 KB)
📁 devices
📄 error.py(5.33 KB)
📁 eventloop
📁 green
📁 log
📄 py.typed(0 B)
📁 ssh
📁 sugar
📁 tests
📁 utils

Editing: init.py

"""Python bindings for 0MQ."""

# Copyright (C) PyZMQ Developers
# Distributed under the terms of the Modified BSD License.

# load bundled libzmq, if there is one:

import os
import sys
from contextlib import contextmanager

def _load_libzmq():
    """load bundled libzmq if there is one"""
    import platform

dlopen = hasattr(sys, 'getdlopenflags')  # unix-only
    # RTLD flags are added to os in Python 3
    # get values from os because ctypes values are WRONG on pypy
    PYPY = platform.python_implementation().lower() == 'pypy'

if dlopen:
        import ctypes

dlflags = sys.getdlopenflags()
        # set RTLD_GLOBAL, unset RTLD_LOCAL
        flags = ctypes.RTLD_GLOBAL | dlflags
        # ctypes.RTLD_LOCAL is 0 on pypy, which is *wrong*
        flags &= ~getattr(os, 'RTLD_LOCAL', 4)
        # pypy on darwin needs RTLD_LAZY for some reason
        if PYPY and sys.platform == 'darwin':
            flags |= getattr(os, 'RTLD_LAZY', 1)
            flags &= ~getattr(os, 'RTLD_NOW', 2)
        sys.setdlopenflags(flags)
    try:
        from . import libzmq
    except ImportError:
        # raise on failure to load if libzmq is present
        from importlib.util import find_spec

if find_spec(".libzmq", "zmq"):
            # found libzmq, but failed to load it!
            # raise instead of silently moving on
            raise
    else:
        # store libzmq as zmq._libzmq for backward-compat
        globals()['_libzmq'] = libzmq
        if PYPY:
            # should already have been imported above, so reimporting is as cheap as checking
            import ctypes

# some versions of pypy (5.3 < ? < 5.8) needs explicit CDLL load for some reason,
            # otherwise symbols won't be globally available
            # do this unconditionally because it should be harmless (?)
            ctypes.CDLL(libzmq.__file__, ctypes.RTLD_GLOBAL)
    finally:
        if dlopen:
            sys.setdlopenflags(dlflags)

_load_libzmq()

@contextmanager
def _libs_on_path():
    """context manager for libs directory on $PATH

Works around mysterious issue where os.add_dll_directory
    does not resolve imports (conda-forge Python >= 3.8)
    """

if not sys.platform.startswith("win"):
        yield
        return

libs_dir = os.path.abspath(
        os.path.join(
            os.path.dirname(__file__),
            os.pardir,
            "pyzmq.libs",
        )
    )
    if not os.path.exists(libs_dir):
        # no bundled libs
        yield
        return

path_before = os.environ.get("PATH")
    try:
        os.environ["PATH"] = os.pathsep.join([path_before or "", libs_dir])
        yield
    finally:
        if path_before is None:
            os.environ.pop("PATH")
        else:
            os.environ["PATH"] = path_before

# zmq top-level imports

# workaround for Windows
with _libs_on_path():
    from zmq import backend

from zmq.backend import *
from zmq import sugar
from zmq.sugar import *

def get_includes():
    """Return a list of directories to include for linking against pyzmq with cython."""
    from os.path import join, dirname, abspath, pardir, exists

base = dirname(__file__)
    parent = abspath(join(base, pardir))
    includes = [parent] + [join(parent, base, subdir) for subdir in ('utils',)]
    if exists(join(parent, base, 'include')):
        includes.append(join(parent, base, 'include'))
    return includes

def get_library_dirs():
    """Return a list of directories used to link against pyzmq's bundled libzmq."""
    from os.path import join, dirname, abspath, pardir

base = dirname(__file__)
    parent = abspath(join(base, pardir))
    return [join(parent, base)]

COPY_THRESHOLD = 65536
__all__ = ['get_includes', 'COPY_THRESHOLD'] + sugar.__all__ + backend.__all__

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