55 lines
1.4 KiB
Python
55 lines
1.4 KiB
Python
# -*- coding: utf-8 -*-
|
|
# This file is part of pygal
|
|
#
|
|
# A python svg graph plotting library
|
|
# Copyright © 2012-2016 Kozea
|
|
#
|
|
# This library is free software: you can redistribute it and/or modify it under
|
|
# the terms of the GNU Lesser General Public License as published by the Free
|
|
# Software Foundation, either version 3 of the License, or (at your option) any
|
|
# later version.
|
|
#
|
|
# This library is distributed in the hope that it will be useful, but WITHOUT
|
|
# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
|
|
# FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
|
|
# details.
|
|
#
|
|
# You should have received a copy of the GNU Lesser General Public License
|
|
# along with pygal. If not, see <http://www.gnu.org/licenses/>.
|
|
"""Value adapters to use when a chart doesn't accept all value types"""
|
|
from decimal import Decimal
|
|
|
|
from pygal._compat import is_str
|
|
|
|
|
|
def positive(x):
|
|
"""Return zero if value is negative"""
|
|
if x is None:
|
|
return
|
|
if is_str(x):
|
|
return x
|
|
if x < 0:
|
|
return 0
|
|
return x
|
|
|
|
|
|
def not_zero(x):
|
|
"""Return None if value is zero"""
|
|
if x == 0:
|
|
return
|
|
return x
|
|
|
|
|
|
def none_to_zero(x):
|
|
"""Return 0 if value is None"""
|
|
if x is None:
|
|
return 0
|
|
return x
|
|
|
|
|
|
def decimal_to_float(x):
|
|
"""Cast Decimal values to float"""
|
|
if isinstance(x, Decimal):
|
|
return float(x)
|
|
return x
|