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__init__.py
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/
__init__.py
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#!/usr/bin/env python
# -*- coding: utf-8 -*-
# Copyright (c) 2017
# Author(s):
# Thomas Leppelt <thomas.leppelt@dwd.de>
# This file is part of the fogpy package.
# fogpy is free software: you can redistribute it and/or modify it
# under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
# fogpy 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
# General Public License for more details.
# You should have received a copy of the GNU General Public License
# along with fogpy. If not, see <http://www.gnu.org/licenses/>.
"""PP Package initializer.
"""
import datetime
import itertools
import os
BASE_PATH = os.path.sep.join(os.path.dirname(
os.path.realpath(__file__)).split(os.path.sep)[:-1])
def ncycle(iterable, n):
for item in itertools.cycle(iterable):
for i in range(n):
yield item
def get_time_period(start, end, step):
"""Create time series from given start to end by certain interval
Keyword arguments:
start Start time as string in %Y%m%%%d%H%M format
end End time as string in %Y%m%%%d%H%M format
"""
# Define time series for analysis
dt = datetime.datetime.strptime(start, "%Y%m%d%H%M")
tend = datetime.datetime.strptime(end, "%Y%m%d%H%M")
ts = []
if isinstance(step, list):
c = ncycle(step, 1)
else:
c = ncycle([step], 1)
while dt < tend:
ts.append(dt)
ti = c.next()
tstep = datetime.timedelta(minutes=ti)
dt += tstep
return(ts)