mirror of
https://github.com/aykhans/AzSuicideDataVisualization.git
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69 lines
2.0 KiB
Python
69 lines
2.0 KiB
Python
# Copyright (c) Microsoft Corporation. All rights reserved.
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# Licensed under the MIT License. See LICENSE in the project root
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# for license information.
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from __future__ import absolute_import, division, print_function, unicode_literals
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import os
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import sys
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from debugpy.common import compat
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def evaluate(code, path=__file__, mode="eval"):
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# Setting file path here to avoid breaking here if users have set
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# "break on exception raised" setting. This code can potentially run
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# in user process and is indistinguishable if the path is not set.
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# We use the path internally to skip exception inside the debugger.
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expr = compile(code, path, "eval")
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return eval(expr, {}, sys.modules)
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class Observable(object):
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"""An object with change notifications."""
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observers = () # used when attributes are set before __init__ is invoked
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def __init__(self):
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self.observers = []
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def __setattr__(self, name, value):
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try:
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return super(Observable, self).__setattr__(name, value)
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finally:
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for ob in self.observers:
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ob(self, name)
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class Env(dict):
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"""A dict for environment variables.
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"""
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@staticmethod
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def snapshot():
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"""Returns a snapshot of the current environment.
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"""
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return Env(os.environ)
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def copy(self, updated_from=None):
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result = Env(self)
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if updated_from is not None:
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result.update(updated_from)
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return result
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def prepend_to(self, key, entry):
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"""Prepends a new entry to a PATH-style environment variable, creating
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it if it doesn't exist already.
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"""
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try:
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tail = os.path.pathsep + self[key]
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except KeyError:
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tail = ""
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self[key] = entry + tail
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def for_popen(self):
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"""Returns a copy of this dict, with all strings converted to the type
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suitable for subprocess.Popen() and other similar APIs.
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"""
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return {compat.filename_str(k): compat.filename_str(v) for k, v in self.items()}
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