How to generate random numbers in python

Use the random module in python to generate random numbers.

Several usages of the random module are as follows

1. Random floating point numbers

random() --- Produce numbers greater than or equal to 0 and less than 1 Floating point number

ret = random.random()
print(ret)

uniform(a,b) --- Generate a random floating point number in the specified range

ret = random.uniform(1, 4)
print(ret)

2. Random integer

randint(a,b) --- 产生a,b范围内的整数，包含开头和结尾

randrange(start, stop,[step]) --- Generate an integer within the range of start and stop, including the beginning but not the end. step specifies the step size for generating random numbers.

ret = random.randrange(1, 6, 2)
print(ret)

3. Randomly select a data

random.choice(lst) --- Randomly return a data in the sequence

lst = ['a', 'b', 'c']
ret = random.choice(lst)
print(ret)

4.Disrupt

shuffle() --- Shuffle the order of the list

lst = ['a', 'b', 'c']
print(lst) # ['a', 'b', 'c']
random.shuffle(lst)
print(lst) # ['b', 'a', 'c']

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