python中格式化浮點數及科學計數法

 

1、格式化浮點數

>>> "%f" % 100
'100.000000'
>>> "%.2f" % 100
'100.00'
>>> "%f" % 100.35667324
'100.356673'
>>> "%.1f" % 100.35667324
'100.4'

 

2、科學計數法

>>> "%e" % 100
'1.000000e+02'
>>> "%.2e" % 100
'1.00e+02'