a = 'qqq{:%Y-%m-%d %H:%M:%S}www'
a = 'qqq{0:{fill}{align}16}www'
a : source.python
: source.python
= : keyword.operator.assignment.python, source.python
: source.python
' : punctuation.definition.string.begin.python, source.python, string.quoted.single.python
qqq : source.python, string.quoted.single.python
{ : constant.character.format.placeholder.other.python, source.python, string.quoted.single.python
: : constant.character.format.placeholder.other.python, source.python, storage.type.format.python, string.quoted.single.python
%Y-%m-%d %H:%M:%S : constant.character.format.placeholder.other.python, source.python, string.quoted.single.python
} : constant.character.format.placeholder.other.python, source.python, string.quoted.single.python
www : source.python, string.quoted.single.python
' : punctuation.definition.string.end.python, source.python, string.quoted.single.python
a : source.python
: source.python
= : keyword.operator.assignment.python, source.python
: source.python
' : punctuation.definition.string.begin.python, source.python, string.quoted.single.python
qqq : source.python, string.quoted.single.python
{0 : constant.character.format.placeholder.other.python, source.python, string.quoted.single.python
: : constant.character.format.placeholder.other.python, source.python, storage.type.format.python, string.quoted.single.python
{fill} : constant.character.format.placeholder.other.python, source.python, string.quoted.single.python
{align} : constant.character.format.placeholder.other.python, source.python, string.quoted.single.python
16 : constant.character.format.placeholder.other.python, source.python, string.quoted.single.python
} : constant.character.format.placeholder.other.python, source.python, string.quoted.single.python
www : source.python, string.quoted.single.python
' : punctuation.definition.string.end.python, source.python, string.quoted.single.python