# Python Learning--math-related module functions and the use of random number modules

Source: Internet
Author: User

Math-related function usage

Import Math Module--import Math

1.floor () rounding down print (Math.flooor (6.1))

2.ceil () Up-Rounding print (Math.ceil (6.1))

3.round () rounding (odd if even, for system built-in functions) print (Round (5.8)) print (round (6.8))

4.pow () calculates a number of n-th-square print (Math.pow (5,3))

5.SQRT () Open square operation print (MATH.SQRT (9))

6.fabs () calculates the absolute value of a number and returns a floating-point type PRITN (Math.fabs (-6))

7,abs () calculates the absolute value, which is the system built-in function, which is the same as the original data type print (ABS (6))

8.MODF () splits a number into integers and decimals, returning a value of tuple print (MATH.MODF (5.5))

9.copysign () assigns the symbol of the second number to the first number print (Math.copysign (3,-3.5))

10.fsum () calculates the and (return value of floating-point) print (Math.fsum ([1,2,3,4,5,6]) of numbers in a sequence

11.sum () calculates the sum of numbers in a sequence (for the system built-in function, the return value is determined by the original value) print (SUM ([1,2,3,4,5,6]))

The values commonly used in 12.math modules

12.1 (PI) print (Math.PI)

12.2 E (natural logarithm) print (MATH.E)

#随机数模块

Import Random Number Module

Import Random

1.random () randomly gets the decimal between 0~1 (contains 0 does not contain 1)

Print (Random.random ())

2.choice () randomly returns a value from a sequence

Print (Random.choice ([1,2,3,4,5,6,7,8]))

3.shuffle () Random Shuffle list

Print (Random.shuffie ([1,2,3,4, ' A ', ' B '))

4.randrange () Gets the integer in the specified range

Print (Random.randrange (2,14,2))

5.uniform () Gets the random number of the specified range

Print (Random.uniform (2,14))

Python Learning--math-related module functions and the use of random number modules

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