Passing a floating point value greater than (2**31) - 1
yields the exception:

OverflowError: long int too long to convert to int

# e.g., 

fh = open("/dev/zero", "rb")
fh.seek((2.0 ** 31) - 1)   # <--- works fine.

fh = open("/dev/zero", "rb")
fh.seek(2.0 ** 31)  # <--- throws the above  exception.

# Contrast with the behaviour with integers:

fh.seek(2 ** 31)  # works fine
fh.seek((2 ** 63) - 1)  # works fine
fh.seek(2 ** 63)  # throws the exception

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user_id=80475

This seems like reasonable behavior to me.  If it did work
for some reason, it would be asking for hard to find user
bugs.  Closing as won't fix.