Added Pipes

src/cpl_core/pipes/__init__.py

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+# -*- coding: utf-8 -*-
+
+"""
+cpl-core sh-edraft Common Python library
+~~~~~~~~~~~~~~~~~~~
+
+sh-edraft Common Python library
+
+:copyright: (c) 2020 - 2022 sh-edraft.de
+:license: MIT, see LICENSE for more details.
+
+"""
+
+__title__ = 'cpl_core.pipes'
+__author__ = 'Sven Heidemann'
+__license__ = 'MIT'
+__copyright__ = 'Copyright (c) 2020 - 2022 sh-edraft.de'
+__version__ = '2022.6.3'
+
+from collections import namedtuple
+
+# imports:
+from .first_char_to_lower_pipe import FirstCharToLowerPipe
+from .pipe_abc import PipeABC
+
+VersionInfo = namedtuple('VersionInfo', 'major minor micro')
+version_info = VersionInfo(major='2022', minor='6', micro='3')

src/cpl_core/pipes/first_char_to_lower_pipe.py

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+from cpl_core.pipes.pipe_abc import PipeABC
+
+
+class FirstCharToLowerPipe(PipeABC):
+
+    def __init__(self): pass
+
+    def transform(self, value: any, *args):
+        return f'{value[0].lower()}{value[1:]}'

src/cpl_core/pipes/pipe_abc.py

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+from abc import ABC, abstractmethod
+
+
+class PipeABC(ABC):
+
+    @abstractmethod
+    def __init__(self): pass
+
+    @abstractmethod
+    def transform(self, value: any, *args): pass