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# Copyright (C) 2019-2020 Intel Corporation
#
# SPDX-License-Identifier: MIT
import os
import os.path as osp
from itertools import islice
def find(iterable, pred=lambda x: True, default=None):
return next((x for x in iterable if pred(x)), default)
def dir_items(path, ext, truncate_ext=False):
items = []
for f in os.listdir(path):
ext_pos = f.rfind(ext)
if ext_pos != -1:
if truncate_ext:
f = f[:ext_pos]
items.append(f)
return items
def split_path(path):
path = osp.normpath(path)
parts = []
while True:
path, part = osp.split(path)
if part:
parts.append(part)
else:
if path:
parts.append(path)
break
parts.reverse()
return parts
def cast(value, type_conv, default=None):
if value is None:
return default
try:
return type_conv(value)
except Exception:
return default
def to_snake_case(s):
if not s:
return ''
name = [s[0].lower()]
for idx, char in enumerate(s[1:]):
idx = idx + 1
if char.isalpha() and char.isupper():
prev_char = s[idx - 1]
if not (prev_char.isalpha() and prev_char.isupper()):
# avoid "HTML" -> "h_t_m_l"
name.append('_')
name.append(char.lower())
else:
name.append(char)
return ''.join(name)
def pairs(iterable):
a = iter(iterable)
return zip(a, a)
def take_by(iterable, count):
"""
Returns elements from the input iterable by batches of N items.
('abcdefg', 3) -> ['a', 'b', 'c'], ['d', 'e', 'f'], ['g']
"""
it = iter(iterable)
while True:
batch = list(islice(it, count))
if len(batch) == 0:
break
yield batch
def str_to_bool(s):
t = s.lower()
if t in {'true', '1', 'ok', 'yes', 'y'}:
return True
elif t in {'false', '0', 'no', 'n'}:
return False
else:
raise ValueError("Can't convert value '%s' to bool" % s)
def filter_dict(d, exclude_keys):
return { k: v for k, v in d.items() if k not in exclude_keys } |