Python中的 random.triangular() 方法

triangular()是random模块的内置方法。它用于返回偏向一个极端的范围内的随机浮点数。

Syntax : random.triangular(low, high, mode)

Parameters :
low : the lower limit of the random number
high : the upper limit of the random number
mode : additional bias; low < mode < high

if the parameters are (10, 100, 20) then due to the bias, most of the random numbers generated will be closer to 10 as opposed to 100.

Returns : a random floating number

示例 1：

# import the random module
import random
  
# determining the values of the parameters
low = 10
high = 100
mode = 20
  
# using the triangular() method
print(random.triangular(low, high, mode))

输出 ：

22.614510550239572

示例 2：如果我们多次生成数字，我们可能会识别出偏差。

# import the random module
import random
  
# determining the values of the parameters
low = 10
high = 100
mode = 20
  
# running the triangular method with the
# same parameters multiple times
for i in range(10):
    print(random.triangular(low, high, mode))

输出 ：

58.645768016894735
46.690692250503226
33.57590419190895
52.331804090351305
33.09451214875767
12.03845752596168
32.816080679206294
20.4739124559502
82.49208123077557
63.511062284733015

示例 3：我们可以通过绘制图形来可视化三角形图案。

# import the required libraries
import random
import matplotlib.pyplot as plt
  
  
# store the random numbers in a list
nums = []
low = 10
high = 100
mode = 20
  
for i in range(10000):
    temp = random.triangular(low, high, mode)
    nums.append(temp)
      
# plotting a graph
plt.hist(nums, bins = 200)
plt.show()

输出 ：