@@ -818,7 +818,7 @@ are always available.  They are listed here in alphabetical order.
       single: NaN
       single: Infinity
 
-   Return a floating-point number constructed from a string, number, or bytes-like object, if possible.
+   Return a floating-point number constructed from a number, a string, or a bytes-like object.
 
    Examples:
 
@@ -836,19 +836,14 @@ are always available.  They are listed here in alphabetical order.
       -inf
       >>> float(bytearray(b'-2.5'))
       -2.5
-      >>> float(array.array('b', [49, 50, 51]))
-      123.0
+      >>> float(array.array('b', [49, 50, 46, 54, 55]))
+      12.67
 
    If the argument is a string, it should contain a decimal number, optionally
    preceded by a sign, and optionally embedded in whitespace.  The optional
    sign may be ``'+'`` or ``'-'``; a ``'+'`` sign has no effect on the value
    produced.  The argument may also be a string representing a NaN
    (not-a-number), or positive or negative infinity.
-
-   If the argument is a bytes-like object, its contents are parsed as a decimal
-   string.  Therefore, the bytes-like object must contain a valid textual 
-   representation of a floating-point number; otherwise :exc:`ValueError` is raised.
-
    More precisely, the input must conform to the :token:`~float:floatvalue`
    production rule in the following grammar, after leading and trailing
    whitespace characters are removed:
@@ -868,6 +863,9 @@ are always available.  They are listed here in alphabetical order.
    Case is not significant, so, for example, "inf", "Inf", "INFINITY", and
    "iNfINity" are all acceptable spellings for positive infinity.
 
+   If the argument is a bytes-like object, it must contain only ASCII characters
+   that conform to the :token:`~float:floatvalue` rule.
+
    Otherwise, if the argument is an integer or a floating-point number, a
    floating-point number with the same value (within Python's floating-point
    precision) is returned.  If the argument is outside the range of a Python