Convert float 27.7 to 27.70 [closed]

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can anyone tell me a simple way to print out a float 27.7 as 27.70 ?

thanks.

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a = 27.7
print '%.2f' % a
27.70

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If you're worrying about number of digits after point, you probably need use decimal.Decimal Cite from the docs:

Decimal numbers can be represented exactly. In contrast, numbers like 1.1 and 2.2 do not have an exact representations in binary floating point. End users typically would not expect 1.1 + 2.2 to display as 3.3000000000000003 as it does with binary floating point.