Backed out r65073, pending fixing it in Windows.

Doc/library/stdtypes.rst

@@ -1223,9 +1223,9 @@ The conversion types are:
 +------------+-----------------------------------------------------+-------+
 | ``'E'``    | Floating point exponential format (uppercase).      | \(3)  |
 +------------+-----------------------------------------------------+-------+
-| ``'f'``    | Floating point decimal format (lowercase).          | \(3)  |
+| ``'f'``    | Floating point decimal format.                      | \(3)  |
 +------------+-----------------------------------------------------+-------+
-| ``'F'``    | Floating point decimal format (uppercase).          | \(3)  |
+| ``'F'``    | Floating point decimal format.                      | \(3)  |
 +------------+-----------------------------------------------------+-------+
 | ``'g'``    | Floating point format. Uses lowercase exponential   | \(4)  |
 |            | format if exponent is less than -4 or not less than |       |

Doc/library/string.rst

@@ -402,14 +402,13 @@ The available presentation types for floating point and decimal values are:
    | ``'e'`` | Exponent notation. Prints the number in scientific       |
    |         | notation using the letter 'e' to indicate the exponent.  |
    +---------+----------------------------------------------------------+
-   | ``'E'`` | Exponent notation. Same as ``'e'`` except it converts    |
-   |         | the number to upper case.                                |
+   | ``'E'`` | Exponent notation. Same as ``'e'`` except it uses an     |
+   |         | upper case 'E' as the separator character.               |
    +---------+----------------------------------------------------------+
    | ``'f'`` | Fixed point. Displays the number as a fixed-point        |
    |         | number.                                                  |
    +---------+----------------------------------------------------------+
-   | ``'F'`` | Fixed point. Same as ``'f'`` except it converts the      |
-   |         | number to upper case.                                    |
+   | ``'F'`` | Fixed point. Same as ``'f'``.                            |
    +---------+----------------------------------------------------------+
    | ``'g'`` | General format. This prints the number as a fixed-point  |
    |         | number, unless the number is too large, in which case    |

Lib/test/test_format.py

@@ -79,17 +79,6 @@ def test_format(self):
         testformat("%#.*f", (110, -1.e+100/3.))
         testformat("%#.*F", (110, -1.e+100/3.))
         overflowrequired = 0
-        # check for %f and %F
-        testformat("%f", (1.0,), "1.000000")
-        testformat("%F", (1.0,), "1.000000")
-        testformat("%f", (1e100,), "1e+100")
-        testformat("%F", (1e100,), "1E+100")
-        testformat("%f", (1e100,), "1e+100")
-        testformat("%F", (1e100,), "1E+100")
-        testformat("%f", (float('nan'),), "nan")
-        testformat("%F", (float('nan'),), "NAN")
-        testformat("%f", (float('inf'),), "inf")
-        testformat("%F", (float('inf'),), "INF")
         # Formatting of integers. Overflow is not ok
         overflowok = 0
         testformat("%x", 10, "a")

Lib/test/test_types.py

@@ -514,17 +514,9 @@ def test(f, format_spec, result):
         test( 1.0, '+f', '+1.000000')
         test(-1.0, '+f', '-1.000000')
         test(1.1234e90, 'f', '1.1234e+90')
-        test(1.1234e90, 'F', '1.1234E+90')
+        test(1.1234e90, 'F', '1.1234e+90')
         test(1.1234e200, 'f', '1.1234e+200')
-        test(1.1234e200, 'F', '1.1234E+200')
-        test(1e100, 'x<20f', '1e+100xxxxxxxxxxxxxx')
-        test(1e100, 'x<20F', '1E+100xxxxxxxxxxxxxx')
-        test(float('nan'), 'f', 'nan')
-        test(float('nan'), 'F', 'NAN')
-        test(float('inf'), 'f', 'inf')
-        test(float('inf'), 'F', 'INF')
-        test(float('-inf'), 'f', '-inf')
-        test(float('-inf'), 'F', '-INF')
+        test(1.1234e200, 'F', '1.1234e+200')
 
         test( 1.0, 'e', '1.000000e+00')
         test(-1.0, 'e', '-1.000000e+00')

Misc/NEWS

@@ -12,9 +12,6 @@ What's new in Python 3.0b2?
 Core and Builtins
 -----------------
 
-- Issue #3382: Make '%F' and float.__format__('F') convert results
-  to uppercase.
-
 - Issue #3008: the float type has a new instance method 'float.hex'
   and a new class method 'float.fromhex' to convert floating-point
   numbers to and from hexadecimal strings, respectively.

Objects/stringlib/formatter.h

@@ -741,6 +741,10 @@ format_float_internal(PyObject *value,
     /* first, do the conversion as 8-bit chars, using the platform's
        snprintf.  then, if needed, convert to unicode. */
 
+    /* 'F' is the same as 'f', per the PEP */
+    if (type == 'F')
+        type = 'f';
+
     x = PyFloat_AsDouble(value);
 
     if (x == -1.0 && PyErr_Occurred())
@@ -754,12 +758,8 @@ format_float_internal(PyObject *value,
 
     if (precision < 0)
         precision = 6;
-    if ((type == 'f' || type == 'F') && (fabs(x) / 1e25) >= 1e25) {
-	if (type == 'f')
-	    type = 'g';
-	else
-	    type = 'G';
-    }
+    if (type == 'f' && (fabs(x) / 1e25) >= 1e25)
+        type = 'g';
 
     /* cast "type", because if we're in unicode we need to pass a
        8-bit char.  this is safe, because we've restricted what "type"

Objects/unicodeobject.c

@@ -8588,12 +8588,8 @@ formatfloat(Py_UNICODE *buf,
 	return -1;
     if (prec < 0)
 	prec = 6;
-    if ((type == 'f' || type == 'F') && (fabs(x) / 1e25) >= 1e25) {
-        if (type == 'f')
-            type = 'g';
-        else
-            type = 'G';
-    }
+    if (type == 'f' && (fabs(x) / 1e25) >= 1e25)
+	type = 'g';
     /* Worst case length calc to ensure no buffer overrun:
 
        'g' formats:
@@ -8612,8 +8608,7 @@ formatfloat(Py_UNICODE *buf,
     */
     if (((type == 'g' || type == 'G') && 
           buflen <= (size_t)10 + (size_t)prec) ||
-	((type == 'f' || type == 'F')  &&
-          buflen <= (size_t)53 + (size_t)prec)) {
+	(type == 'f' && buflen <= (size_t)53 + (size_t)prec)) {
 	PyErr_SetString(PyExc_OverflowError,
 			"formatted float is too long (precision too large?)");
 	return -1;
@@ -9096,6 +9091,8 @@ PyObject *PyUnicode_Format(PyObject *format,
 	    case 'F':
 	    case 'g':
 	    case 'G':
+		if (c == 'F')
+			c = 'f';
 		pbuf = formatbuf;
 		len = formatfloat(pbuf, sizeof(formatbuf)/sizeof(Py_UNICODE),
 			flags, prec, c, v);