matplotlib直方图（hist、bins、组距、组数）

代码示例：

#统计电影时长的分布状态
movies_time = [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]
my_font = fm.FontProperties(fname='/System/Library/Fonts/PingFang.ttc',size=10)
plt.figure(figsize=(20,8),dpi=100)
#设置组距
distance = 2
#计算组数
groups_num = int((max(movies_time) - min(movies_time))/distance)
plt.hist(movies_time,bins=groups_num)
plt.xticks(range(min(movies_time),max(movies_time))[::distance])
plt.grid(linestyle='--',alpha=0.5)

plt.xlabel('电影时长大小',fontproperties=my_font)
plt.xlabel('电影的数据量',fontproperties=my_font)

plt.show()

效果截图：