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Diffstat (limited to 'Doc/library/stdtypes.rst')
| -rw-r--r-- | Doc/library/stdtypes.rst | 32 |
1 files changed, 14 insertions, 18 deletions
diff --git a/Doc/library/stdtypes.rst b/Doc/library/stdtypes.rst index 122ed00387..a32e238f50 100644 --- a/Doc/library/stdtypes.rst +++ b/Doc/library/stdtypes.rst @@ -1644,18 +1644,20 @@ expression support in the :mod:`re` module). Return true if all characters in the string are decimal characters and there is at least one character, false - otherwise. Decimal characters are those from general category "Nd". This category - includes digit characters, and all characters - that can be used to form decimal-radix numbers, e.g. U+0660, - ARABIC-INDIC DIGIT ZERO. + otherwise. Decimal characters are those that can be used to form + numbers in base 10, e.g. U+0660, ARABIC-INDIC DIGIT + ZERO. Formally a decimal character is a character in the Unicode + General Category "Nd". .. method:: str.isdigit() Return true if all characters in the string are digits and there is at least one character, false otherwise. Digits include decimal characters and digits that need - special handling, such as the compatibility superscript digits. Formally, a digit - is a character that has the property value Numeric_Type=Digit or Numeric_Type=Decimal. + special handling, such as the compatibility superscript digits. + This covers digits which cannot be used to form numbers in base 10, + like the Kharosthi numbers. Formally, a digit is a character that has the + property value Numeric_Type=Digit or Numeric_Type=Decimal. .. method:: str.isidentifier() @@ -2199,15 +2201,12 @@ The conversion types are: Notes: (1) - The alternate form causes a leading zero (``'0'``) to be inserted between - left-hand padding and the formatting of the number if the leading character - of the result is not already a zero. + The alternate form causes a leading octal specifier (``'0o'``) to be + inserted before the first digit. (2) The alternate form causes a leading ``'0x'`` or ``'0X'`` (depending on whether - the ``'x'`` or ``'X'`` format was used) to be inserted between left-hand padding - and the formatting of the number if the leading character of the result is not - already a zero. + the ``'x'`` or ``'X'`` format was used) to be inserted before the first digit. (3) The alternate form causes the result to always contain a decimal point, even if @@ -3303,15 +3302,12 @@ The conversion types are: Notes: (1) - The alternate form causes a leading zero (``'0'``) to be inserted between - left-hand padding and the formatting of the number if the leading character - of the result is not already a zero. + The alternate form causes a leading octal specifier (``'0o'``) to be + inserted before the first digit. (2) The alternate form causes a leading ``'0x'`` or ``'0X'`` (depending on whether - the ``'x'`` or ``'X'`` format was used) to be inserted between left-hand padding - and the formatting of the number if the leading character of the result is not - already a zero. + the ``'x'`` or ``'X'`` format was used) to be inserted before the first digit. (3) The alternate form causes the result to always contain a decimal point, even if |