Random number-----Random in Python

These methods are located in the random module

Random.random (), Math.random () with JavaScript, returns a floating-point number between [0.0,1)

Random.uniform (A, B), returns the floating-point number between [a,b]

The Python code print random.uniform # print Random.uniform #----results (different results on various machines) #18.7356606526 #12.5798298022

Random.randint (A, B), returns the integer Python code print random.randint #生成的随机数n between [a,b]: <= n <= print random. Randint #结果永远是20 #print random.randint (#该语句是错误的). The lower bound must be less than the upper limit.

Random.randrange ([start], stop[, step] gets a random number from the specified range, in the set incremented by the specified cardinality. such as: Random.randrange (10, 100, 2), the result is equivalent from [10, 12, 14, 16, ... 96, 98] sequence to obtain a random number.

Random.randrange (10, 100, 2) are equivalent to Random.choice (range (10, 100, 2) on the results. Random.choice (Sequence). The parameter sequence represents an ordered type. Here's how: sequence is not a specific type in Python, it's a series of types. list, tuple, strings belong to sequence.

Print Random.choice ("Learning python") Python code print Random.choice (["Jgood", "is", "a", "handsome", "boy"]) print ran Dom.choice ("Tuple", "List", "Dict"))

Random.shuffle (x[, random]), used to disrupt elements in a list

Python code p = [Python, ' is ', ' powerful ', ' simple ', ' and so on ... '] Random.shuffle (p) Print P #----results (different The results on the machine may not be the same. #[' powerful ', ' simple ', ' are ', ' Python ', ' and so on ... ']

Random.sample (sequence, k) that randomly obtains a fragment of the specified length from the specified sequence. The sample function does not modify the original sequence.

Python code list = [1, 2, 3, 4, 5, 6, 7, 8, 9,] slice = random.sample (list, 5) #从list中随机获取5个元素, return print as a fragment Slice Print List #原有序列并没有改变.