#
# Copyright (c) 2022 TUM Department of Electrical and Computer Engineering.
#
# This file is part of MLonMCU.
# See https://github.com/tum-ei-eda/mlonmcu.git for further info.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
#
import sys
[docs]
def is_power_of_two(n):
return (n & (n - 1) == 0) and n != 0
[docs]
def ask_user(text, default: bool, yes_keys=["y", "j"], no_keys=["n"], interactive=True):
assert len(yes_keys) > 0 and len(no_keys) > 0
if not interactive:
return default
if default:
suffix = " [{}/{}] ".format(yes_keys[0].upper(), no_keys[0].lower())
else:
suffix = " [{}/{}] ".format(yes_keys[0].lower(), no_keys[0].upper())
message = text + suffix
answer = input(message)
if default:
return answer.lower() not in no_keys and answer.upper() not in no_keys
else:
return not (answer.lower() not in yes_keys and answer.upper() not in yes_keys)
[docs]
def get_base_prefix_compat():
"""Get base/real prefix, or sys.prefix if there is none."""
return getattr(sys, "base_prefix", None) or getattr(sys, "real_prefix", None) or sys.prefix
[docs]
def in_virtualenv():
"""Detects if the current python interpreter is from a virtual environment."""
return get_base_prefix_compat() != sys.prefix
[docs]
def filter_none(data):
"""Helper function which drop dict items with a None value."""
assert isinstance(data, dict), "Dict only"
out = {key: value for key, value in data.items() if value is not None}
return out