.pythonstartup

# import os
# import sys
# import shutil as sh
# from shutil import move, move as mv, copy2 as copy, copy2 as cp
# from contextlib import contextmanager
#
#
# @contextmanager
# def nostdout():
#     oldstdout, oldstderr = sys.stdout, sys.stderr
#     file = open(os.devnull, "w")
#     try:
#         sys.stdout, sys.stderr = file, file
#         yield
#     finally:
#         sys.stdout, sys.stderr = oldstdout, oldstderr
#         file.close()
#
#
# class LazyModule:
#     """Import module on first attribute access
#
#     - for faster REPL loadtimes
#     - to prevent ImportErrors
#     """
#
#     def __init__(self, name="", fullname=""):
#         self.name = name
#         self.fullname = fullname
#
#     def _import(self):
#         import importlib
#
#         try:
#             module = importlib.import_module(self.fullname)
#         except ImportError:
#             module = None
#         globals()[self.name] = module
#         return module
#
#     def __getattr__(self, attr):
#         module = self._import()
#         attr = getattr(module, attr)
#         return attr
#
#     def __repr__(self):
#         module = self._import()
#         return repr(module)
#
#     def __str__(self):
#         module = self._import()
#         return str(module)
#
#
# np = LazyModule(name="np", fullname="numpy")
# sp = LazyModule(name="sp", fullname="scipy")
# nn = LazyModule(name="nn", fullname="torch.nn")
# torch = LazyModule(name="torch", fullname="torch")
# F = LazyModule(name="F", fullname="torch.nn.functional")
# plt = LazyModule(name="plt", fullname="matplotlib.pyplot")