Merge pull request '修改绘图bug' (#37) from saipo_test into master

Reviewed-on: saipo/astrbot_plugin_dajiao#37

main.py

@@ -5,6 +5,7 @@ from astrbot.api import logger
 import random
 from .back import time_long, volume, isUserExist, insertUser, seconds_to_hms, ml_to_l_ml, get_user_name
 import pymysql
+import matplotlib
 import matplotlib.pyplot as plt
 from .Tool import get_tool_name
 import astrbot.api.message_components as Comp
@@ -331,14 +332,14 @@ class MyPlugin(Star):
         for i in range(len(date)):
             day.append(date[i][0])
             volume.append(date[i][1])
-        plt.pyplot.plot(day, volume)
-        plt.pyplot.title('日产量')
-        plt.pyplot.xlabel('日期')
-        plt.pyplot.ylabel('日产量')
-        plt.pyplot.xticks(day)
-        plt.pyplot.grid()
-        plt.pyplot.savefig('dayvolume.png')
-        plt.pyplot.close()
+        plt.plot(day, volume)
+        plt.title('日产量')
+        plt.xlabel('日期')
+        plt.ylabel('日产量')
+        plt.xticks(day)
+        plt.grid()
+        plt.savefig('dayvolume.png')
+        plt.close()
         with open('dayvolume.png', 'rb') as f:
             image_data = f.read()
         image = Comp.Image.fromBytes(image_data)