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# author : S. Mandalia
# s.p.mandalia@qmul.ac.uk
#
# date : March 17, 2018
"""
Misc functions for the BSM flavour ratio analysis
"""
from __future__ import absolute_import, division
import os
import errno
import multiprocessing
from fractions import gcd
import argparse
from operator import attrgetter
import numpy as np
from utils.enums import Likelihood, MixingScenario
class SortingHelpFormatter(argparse.HelpFormatter):
"""Sort argparse help options alphabetically."""
def add_arguments(self, actions):
actions = sorted(actions, key=attrgetter('option_strings'))
super(SortingHelpFormatter, self).add_arguments(actions)
def solve_ratio(fr):
denominator = reduce(gcd, fr)
return [int(x/denominator) for x in fr]
def gen_identifier(args):
f = '_DIM{0}'.format(args.dimension)
mr1, mr2, mr3 = solve_ratio(args.measured_ratio)
if args.fix_source_ratio:
sr1, sr2, sr3 = solve_ratio(args.source_ratio)
f += '_sfr_{0:G}_{1:G}_{2:G}_mfr_{3:G}_{4:G}_{5:G}'.format(
sr1, sr2, sr3, mr1, mr2, mr3
)
if args.fix_mixing is not MixingScenario.NONE:
f += '_{0}'.format(args.fix_mixing)
elif args.fix_mixing_almost:
f += '_fix_mixing_almost'
elif args.fix_scale:
f += '_fix_scale_{0}'.format(args.scale)
else:
f += '_mfr_{3:03d}_{4:03d}_{5:03d}'.format(mr1, mr2, mr3)
if args.fix_mixing is not MixingScenario.NONE:
f += '_{0}'.format(args.fix_mixing)
elif args.fix_mixing_almost:
f += '_fix_mixing_almost'
elif args.fix_scale:
f += '_fix_scale_{0}'.format(args.scale)
if args.likelihood is Likelihood.FLAT: f += '_flat'
elif args.likelihood is Likelihood.GAUSSIAN:
f += '_sigma_{0:03d}'.format(int(args.sigma_ratio*1000))
return f
def gen_outfile_name(args):
"""Generate a name for the output file based on the input args.
Parameters
----------
args : argparse
argparse object to print
"""
return args.outfile + gen_identifier(args)
def parse_bool(s):
"""Parse a string to a boolean.
Parameters
----------
s : str
String to parse
Returns
----------
bool
Examples
----------
>>> from misc import parse_bool
>>> print parse_bool('true')
True
"""
if s.lower() == 'true':
return True
elif s.lower() == 'false':
return False
else:
raise ValueError
def parse_enum(e):
return '{0}'.format(e).split('.')[1].lower()
def print_args(args):
"""Print the input arguments.
Parameters
----------
args : argparse
argparse object to print
"""
arg_vars = vars(args)
for key in sorted(arg_vars):
print '== {0:<25} = {1}'.format(key, arg_vars[key])
def enum_parse(s, c):
return c[s.upper()]
def make_dir(outfile):
try:
os.makedirs(outfile[:-len(os.path.basename(outfile))])
except OSError as exc: # Python >2.5
if exc.errno == errno.EEXIST and os.path.isdir(outfile[:-len(os.path.basename(outfile))]):
pass
else:
raise
def remove_option(parser, arg):
for action in parser._actions:
if (vars(action)['option_strings']
and vars(action)['option_strings'][0] == arg) \
or vars(action)['dest'] == arg:
parser._remove_action(action)
for action in parser._action_groups:
vars_action = vars(action)
var_group_actions = vars_action['_group_actions']
for x in var_group_actions:
if x.dest == arg:
var_group_actions.remove(x)
return
def seed_parse(s):
if s.lower() == 'none':
return None
else:
return int(s)
def thread_type(t):
if t.lower() == 'max':
return multiprocessing.cpu_count()
else:
return int(t)
def thread_factors(t):
for x in reversed(range(int(np.ceil(np.sqrt(t)))+1)):
if t%x == 0:
return (x, int(t/x))
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