if sys.version_info < (3, 8): # pragma: no cover from typing_extensions import Final else: from typing import Final # pragma: no cover
# datetime.max.timestamp() errors on Windows, so we must hardcode # the highest possible datetime value that can output a timestamp. # tl;dr platform-independent max timestamps are hard to form # See: https://stackoverflow.com/q/46133223 try: # Get max timestamp. Works on POSIX-based systems like Linux and macOS, # but will trigger an OverflowError, ValueError, or OSError on Windows
_MAX_TIMESTAMP = datetime.max.timestamp() except (OverflowError, ValueError, OSError): # pragma: no cover # Fallback for Windows and 32-bit systems if initial max timestamp call fails # Must get max value of ctime on Windows based on architecture (x32 vs x64) # https://docs.microsoft.com/en-us/cpp/c-runtime-library/reference/ctime-ctime32-ctime64-wctime-wctime32-wctime64 # Note: this may occur on both 32-bit Linux systems (issue #930) along with Windows systems
is_64bits = sys.maxsize > 2**32
_MAX_TIMESTAMP = (
datetime(3000, 1, 1, 23, 59, 59, 999999).timestamp() if is_64bits else datetime(2038, 1, 1, 23, 59, 59, 999999).timestamp()
)
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