Hi, In https://docs.python.org/3/library/functions.html#float I see: If the argument is outside the range of a Python float, an OverflowError will be raised. but when I try to produce an OverflowError, instead the float is rounded to inf. I'm not clear if this is a doc bug, an error with the implementation of Ubuntu python 3.11.6, or an error with my test. Note that my observed behaviour is consistent with https://en.wikipedia.org/wiki/IEEE_754: Overflow: a finite result is too large to be represented accurately (*i.e.*, its exponent with an unbounded exponent range would be larger than *emax*). By default, returns ±infinity for the round-to-nearest modes (and follows the rounding rules for the directed rounding modes). To reproduce: andrew@andrew-gs:~/Documents/100daysPython/misc$ cat o2.py import sys s="10e310" try: v=float( s ) except ValueError as e: print( f"Caught ValueError \"{e}\"" ) sys.exit(1) except: print( f"Caught unknown exception. Exiting." ) sys.exit(2) print( f"\nstring \"{s}\" becomes {v}\n" ) print( sys.float_info ) andrew@andrew-gs:~/Documents/100daysPython/misc$ python3 ./o2.py string "10e310" becomes inf sys.float_info(max=1.7976931348623157e+308, max_exp=1024, max_10_exp=308, min=2.2250738585072014e-308, min_exp=-1021, min_10_exp=-307, dig=15, mant_dig=53, epsilon=2.220446049250313e-16, radix=2, rounds=1) andrew@andrew-gs:~/Documents/100daysPython/misc$ Does this look like a doc bug, an implementation bug, or something else? Thanks for any information, Andrew