# coding: utf-8
from matplotlib import font_manager
from matplotlib import pyplot as plt

# 设置字体，这里使用微软雅黑字体
my_font = font_manager.FontProperties(fname='C:\Windows\Fonts\msyh.ttc', size=10)

# 数据列表
a=[131,98,125,131,124,139,131,117,128,108,135,138,131,102,107,114,119,128,121,142,127,130,124,101,110,
116,117,110,128,128,115,99,136,126,134,95,138,117,111,78,132,124,113,150,110,117,86,95,144,105,126,
130,126,130,126,116,123,106,112,138,123,86,101,99,136,123,117,119,105,137,123,128,125,104,109,134,
125,127,105,120,107,129,116,108,132,103,136,118,102,120,114,105,115,132,145,119,121,112,139,125,138,109,
132,134,156,106,117,127,144,139,139,119,140,83,110,102,123,107,143,115,136,118,139,123,112,118,125,109,
119,133,112,114,122,109,106,123,116,131,127,115,118,112,135,115,146,137,116,103,144,83,123,111,110,111,
100,154,136,100,118,119,133,134,106,129,126,110,111,109,141,120,117,106,149,122,122,110,118,127,121,114,
125,126,114,140,103,130,141,117,106,114,121,114,133,137,92,121,112,146,97,137,105,98,117,112,81,97,
139,113,134,106,144,110,137,137,111,104,117,100,111,101,110,105,129,137,112,120,113,133,112,83,94,146,
133,101,131,116,111,84,137,115,122,106,144,109,123,116,111,111,133,150]

# 计算组数，这里将数据范围分为3组
d = 3
num_bins =  (max(a) - min(a)) // d
print(max(a),min(a),max(a)-min(a))
print(num_bins)

# 设置图形大小，dpi为分辨率
plt.figure(figsize=(20,8),dpi=80)

# 绘制直方图，density=True表示归一化，即每个柱子的高度表示在该区间内的数据比例
plt.hist(a, num_bins, density=True)

# 设置x轴的刻度，范围从最小值到最大值，间隔为d
plt.xticks(range(min(a), max(a)+d, d))

# 显示网格
plt.grid()

# 显示图形
plt.show()

这段代码首先导入了必要的库，然后设置了字体和数据。接着，它计算了数据的组数，并绘制了直方图。最后，它设置了x轴的刻度并显示了图形。效果如下：