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#!/usr/bin/env python3
#
# helpers.py
"""
Helper functions.
.. versionadded:: 0.2.0
"""
#
# Copyright © 2020-2021 Dominic Davis-Foster <dominic@davis-foster.co.uk>
#
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to deal
# in the Software without restriction, including without limitation the rights
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
# copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice shall be included in all
# copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
# EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
# IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
# DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
# OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE
# OR OTHER DEALINGS IN THE SOFTWARE.
#
# stdlib
from typing import Union
__all__ = ["em", "px", "rem"]
def px(val: Union[int, float, str]) -> str:
"""
Helper function to format a number as a value in pixels.
:param val:
"""
return f"{val}px"
def em(val: Union[int, float, str]) -> str:
"""
Helper function to format a number as a value in em.
:param val:
"""
return f"{val}em"
def rem(val: Union[int, float, str]) -> str:
"""
Helper function to format a number as a value in rem.
:param val:
"""
return f"{val}rem"
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