用户:Songya123

>>> '{: f}; {: f}'.format(3.14, -3.14)
' 3.140000; -3.140000'
>>> '{: f}; {:f}'.format(3.14, -3.14)
' 3.140000; -3.140000'
>>> '{0:#x}'.format(12)
'0xc'
>>> '{0:#d}'.format(12)
'12'
>>> '{0:#c}'.format(12)
'\x0c'
>>> '{0:d}'.format(12)
'12'
>>> '{0:c}'.format(12)
'\x0c'
>>> '{0:5}'.format(12)
' 12'
>>> '{0:1>5}'.format(12) '11112'
>>> '{:0>5}'.format(12)
'00012'
>>> '{0:0<5}'.format(12)
'12000'
>>> '{0:0^6}'.format(12)
'001200'
>>> s4
'001200'