python画图报错：OSError: 'seaborn-whitegrid' is not a valid package style

解决方法：

https://stackoverflow.com/questions/78019854/matplotlib-seaborn-whitegrid-is-not-a-valid-package-style?newreg=7ee17d6cd10c4182b08284391596644b

代码：

import matplotlib.pyplot as plt
 
plt.style.available
 

效果：

这个问题说明对应的样式package不存在，查询到存在的package都有哪些然后对应修改即可。

plt.style.use("seaborn-v0_8-whitegrid")

示例：

import numpy as np
import matplotlib.pyplot as plt
from matplotlib import pyplot
 
# plt.style.use('seaborn-whitegrid')
plt.style.use('seaborn-v0_8-whitegrid')
 
palette = pyplot.get_cmap('Set1')
 
font1 = {'family' : 'Times New Roman',
'weight' : 'normal',
'size'   : 32,
}
 
fig=plt.figure(figsize=(20,10))
 
iters=list(range(7))
#这里随机给了alldata1和alldata2数据用于测试
alldata1=[]#算法1所有纵坐标数据
data=np.array([2,4,5,8,11,13,15])#单个数据
alldata1.append(data)
data=np.array([2,3,6,12,13,13,15])
alldata1.append(data)
data=np.array([2,2,7,9,13,14,16])
alldata1.append(data)
alldata1=np.array(alldata1)
alldata2=[]#算法2所有纵坐标数据
data=np.array([2,4,5,8,10,10,11])#单个数据
alldata2.append(data)
data=np.array([3,3,3,6,7,8,10])
alldata2.append(data)
data=np.array([3,3,5,5,6,7,9])
alldata2.append(data)
alldata2=np.array(alldata2)
 
def draw_line(name_of_alg,color_index,datas):
    color=palette(color_index)
    avg=np.mean(datas,axis=0)
    std=np.std(datas,axis=0)
    r1 = list(map(lambda x: x[0]-x[1], zip(avg, std)))#上方差
    r2 = list(map(lambda x: x[0]+x[1], zip(avg, std)))#下方差
    plt.plot(iters, avg, color=color,label=name_of_alg,linewidth=3.5)
    plt.fill_between(iters, r1, r2, color=color, alpha=0.2)
 
draw_line("alg1",1,alldata1)
draw_line("alg2",2,alldata2)
 
plt.xticks(fontsize=22)
plt.yticks(fontsize=22)
plt.xlabel('Time(s)',fontsize=32)
plt.ylabel('metric',fontsize=32)
plt.legend(loc='upper left',prop=font1)
plt.title("instance",fontsize=34)
 
plt.show()

效果：