Python floating-point arithmetic and decimal point exact number

Source: Internet
Author: User

>>> 1050/31
33
>>> 1050/float (31)
33.87096774193548 # Numerator or denominator forcibly converts a shape into a floating-point type using the float () method, so that the result of division is also floating-point
>>> Round (1050/float (31))
34.0
>>> Round (1050/float (31), 3)
33.871 # The number of digits after the decimal point can be exact with the round () method, and if the second argument is not set, the default decimal point is followed by 0 and rounded.

Python floating-point arithmetic and decimal point exact number

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