def load_mechanisms(path, warn_if_already_loaded=True):
"""
load_mechanisms(path)
Search for and load NMODL mechanisms from the path given.
This function will not load a mechanism path twice.
The path should specify the directory in which nrnivmodl or mknrndll was run,
and in which the directory 'i686' (or 'x86_64' or 'powerpc' depending on your platform)
was created"""
import platform
global nrn_dll_loaded
if path in nrn_dll_loaded:
if warn_if_already_loaded:
print("Mechanisms already loaded from path: %s. Aborting." % path)
return True
# in case NEURON is assuming a different architecture to Python,
# we try multiple possibilities
libname = 'libnrnmech.so'
libsubdir = '.libs'
arch_list = [platform.machine(), 'i686', 'x86_64', 'powerpc', 'umac']
# windows loads nrnmech.dll
if h.unix_mac_pc() == 3:
libname = 'nrnmech.dll'
libsubdir = ''
arch_list = ['']
for arch in arch_list:
lib_path = os.path.join(path, arch, libsubdir, libname)
if os.path.exists(lib_path):
h.nrn_load_dll(lib_path)
nrn_dll_loaded.append(path)
return True
print("NEURON mechanisms not found in %s." % path)
return False
"""
Module to help with mocking/bypassing
RaspberryPi specific code to enable for
debugging on a Mac or Windows host.
"""
from sys import platform, version_info
from sys import platform as os_platform
import platform
REQUIRED_PYTHON_VERSION = 3.5
IS_LINUX = 'linux' in os_platform
DETECTED_CPU = platform.machine()
IS_PI = "arm" in DETECTED_CPU
def validate_python_version():
"""
Checks to make sure that the correct version of Python is being used.
Raises:
Exception -- If the version of Python is not new enough.
"""
python_version = float('{}.{}'.format(
version_info.major, version_info.minor))
error_text = 'Requires Python {}'.format(REQUIRED_PYTHON_VERSION)
if python_version < REQUIRED_PYTHON_VERSION:
print(error_text)
raise Exception(error_text)
# next try is to derive from nrnversion(6) (only works for autotools build)
import platform
import os
p = h.nrnversion(6)
if "--prefix=" in p:
p = p[p.find('--prefix=') + 9:]
p = p[:p.find("'")]
else:
p = "/usr/local/nrn"
if sys.version_info >= (3, 0):
import sysconfig
hoc_path = p + "/lib/python/neuron/hoc%s" % sysconfig.get_config_var('SO')
else:
hoc_path = p + "/lib/python/neuron/hoc.so"
if not os.path.isfile(hoc_path):
hoc_path = p + "/%s/lib/libnrnpython%d.so" % (platform.machine(), sys.version_info[0])
if not os.path.isfile(hoc_path):
hoc_path = p + "/%s/lib/libnrnpython.so" % platform.machine()
setattr(hoc, "__file__", hoc_path)
else:
_original_hoc_file = hoc.__file__
# As a workaround to importing doc at neuron import time
# (which leads to chicken and egg issues on some platforms)
# define a dummy help function which imports doc,
# calls the real help function, and reassigns neuron.help to doc.help
# (thus replacing the dummy)
def help(request=None):
global help
from neuron import doc
doc.help(request)
help = doc.help
print(
"""Python version: %s
dist: %s
linux_distribution: %s
system: %s
machine: %s
platform: %s
uname: %s
version: %s
mac_ver: %s
""" % (
sys.version.split('\n'),
str(platform.dist()),
linux_distribution(),
platform.system(),
platform.machine(),
platform.platform(),
platform.uname(),
platform.version(),
platform.mac_ver(),
))
def call_shell():
session = subprocess.Popen(['syspack.sh'], stdout=PIPE, stderr=PIPE)
stdout, stderr = session.communicate()
if stderr:
raise Exception("Error " + str(stderr))
