1*8cb86eadSVedant Kumar# On macOS, system python binaries like /usr/bin/python and $(xcrun -f python3)
2*8cb86eadSVedant Kumar# are shims. They do some light validation work and then spawn the "real" python
3*8cb86eadSVedant Kumar# binary. Find the "real" python by asking dyld -- sys.executable reports the
4*8cb86eadSVedant Kumar# wrong thing more often than not. This is also useful when we're running under
5*8cb86eadSVedant Kumar# a Homebrew python3 binary, which also appears to be some kind of shim.
6*8cb86eadSVedant Kumardef getDarwinRealPythonExecutable():
7*8cb86eadSVedant Kumar    import ctypes
8*8cb86eadSVedant Kumar    dyld = ctypes.cdll.LoadLibrary('/usr/lib/system/libdyld.dylib')
9*8cb86eadSVedant Kumar    namelen = ctypes.c_ulong(1024)
10*8cb86eadSVedant Kumar    name = ctypes.create_string_buffer(b'\000', namelen.value)
11*8cb86eadSVedant Kumar    dyld._NSGetExecutablePath(ctypes.byref(name), ctypes.byref(namelen))
12*8cb86eadSVedant Kumar    return name.value.decode('utf-8').strip()
13*8cb86eadSVedant Kumar
14*8cb86eadSVedant Kumarprint(getDarwinRealPythonExecutable())
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