57 lines
1.7 KiB
Python
57 lines
1.7 KiB
Python
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# Copyright (c) Streamlit Inc. (2018-2022) Snowflake Inc. (2022-2025)
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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from __future__ import annotations
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import os
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import platform
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import re
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import sys
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SYSTEM = platform.system().lower()
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IS_WINDOWS = SYSTEM == "windows"
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IS_DARWIN = SYSTEM == "darwin"
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IS_LINUX_OR_BSD = (SYSTEM == "linux") or ("bsd" in SYSTEM)
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def is_pex() -> bool:
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"""Return if streamlit running in pex.
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Pex modifies sys.path so the pex file is the first path and that's
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how we determine we're running in the pex file.
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"""
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return bool(re.match(r".*pex$", sys.path[0]))
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def is_repl() -> bool:
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"""Return True if running in the Python REPL."""
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import inspect
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root_frame = inspect.stack()[-1]
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filename = root_frame[1] # 1 is the filename field in this tuple.
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if filename.endswith(os.path.join("bin", "ipython")):
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return True
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# <stdin> is what the basic Python REPL calls the root frame's
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# filename, and <string> is what iPython sometimes calls it.
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return filename in ("<stdin>", "<string>")
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def is_executable_in_path(name: str) -> bool:
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"""Check if executable is in OS path."""
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from shutil import which
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return which(name) is not None
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