优化代码：def save_file(data, out_path): if not os.path.exists(out_path): os.mkdir(out_path) with open(out_path, 'w') as f: json.dump(data, f)

可以尝试使用os.makedirs()代替os.mkdir()，因为前者能够递归创建路径中的所有文件夹。

同时，建议添加异常处理，以确保在发生错误时代码不会崩溃。例如，可以使用try-except语句来捕获文件打开或写入错误，并进行相应处理。最好将错误信息记录到日志文件中，以便后续查看和调试。

修改后的代码如下：

import os
import json

def save_file(data, out_path):
    try:
        os.makedirs(out_path, exist_ok=True)
        with open(out_path, 'w', encoding='utf-8') as f:
            json.dump(data, f, ensure_ascii=False)
    except Exception as e:
        # 记录错误信息到日志文件中
        with open('error.log', 'a', encoding='utf-8') as f:
            f.write(f'Error in save_file: {str(e)}\n')

其中，`exist_ok=True`表示如果目录已经存在则不会报错，`ensure_ascii=False`表示以utf-8编码写入json文件，避免中文出现乱码。同时，异常处理语句可以根据具体情况进行修改和优化。

相关问题

import requests import urllib.request import os def quest_find(quest_url, awme_id): params = {"id": awme_id} respon = requests.get(quest_url, params=params).json() return respon["data"], respon["code"] def re_down(url,filename): try: urllib.request.urlretrieve(url,filename) except urllib.error.ContentTooShortError: print ('Network conditions is not good. Reloading...') re_down(url,filename) # 获取视频URL，并下载 if __name__ == '__main__': quest_url = "http://discover-rpc.cmm-crawler-intranet.k8s.limayao.com/play_url" save_path = "/home/algodev/sujunbin/whisper/test_model/video%s" %time if not os.path.exists(save_path): os.mkdir(save_path) awme_ids = ['7119114587735100687'] with open('id_time.txt','r') as file: for line in file.readlines(): line = line.split() id = line[0] time1 = int(line[1]) if time1<10000: time ='<10s' elif 10000<=time1<20000: time='10-20s' elif 20000<=time1<30000: time='20-30s' elif 30000<=time1<40000: time='30-40s' elif 40000<=time1<50000: time='40-50s' elif 50000<=time1<60000: time='50-60s' elif 60000<=time1<90000: time='60-90s' elif 90000<=time1<120000: time='90-120s' elif 120000<=time1<180000: time='120-180s' elif time1>=180000: time='>180s' save_path = "/home/algodev/sujunbin/whisper/test_model/video%s" %time if not os.path.exists(save_path): os.mkdir(save_path) data_json, code = quest_find(quest_url, id) play_url = data_json['play_url'] video_name = id + '.mp4' save_video_path = os.path.join(save_path, video_name) re_down(data_json['play_url'], save_video_path) print(save_video_path) for i in range(len(awme_ids)): data_json, code = quest_find(quest_url, awme_ids[i]) play_url = data_json['play_url'] video_name = awme_ids[i] + '.mp4' save_video_path = os.path.join(save_path, video_name) urllib.request.urlretrieve(data_json['play_url'], save_video_path) print(save_video_path) print("done!")这段代码有什么问题

这段代码可能存在以下问题：

1. 缺少必要的模块导入语句，需要添加 `import time`。

2. 代码中的变量名 `awme_ids` 可能有误，应该改为 `aweme_ids`。

3. 在 `re_down()` 函数中，若下载失败会无限递归调用自身，可能导致内存溢出。建议添加一个计数器，若连续下载失败次数超过一定阈值，则放弃下载。

4. 在循环过程中，多次声明 `save_path` 变量，覆盖了之前的赋值，应该在循环外部声明。

5. 可能存在无法下载视频的情况，需要添加异常处理机制，例如 `urllib.error.HTTPError`、`urllib.error.URLError`、`socket.timeout` 等异常。

6. 代码中的请求 URL 是内网地址，无法在公网环境下使用。

7. 可能存在多个视频对应同一个保存路径的情况，应该在视频名中添加一个唯一标识，例如时间戳或视频 ID。

建议在代码中添加适当的注释和异常处理，以提高代码的可读性和健壮性。

import tkinter as tk import pandas as pd import matplotlib.pyplot as plt from matplotlib.backends.backend_tkagg import FigureCanvasTkAgg import os class ExcelPlotter(tk.Frame): def init(self, master=None): super().init(master) self.master = master self.master.title("图方便") self.file_label = tk.Label(master=self, text="Excel File Path:") self.file_label.grid(row=0, column=0, sticky="w") self.file_entry = tk.Entry(master=self) self.file_entry.grid(row=0, column=1, columnspan=2, sticky="we") self.file_button = tk.Button(master=self, text="Open", command=self.open_file) self.file_button.grid(row=0, column=3, sticky="e") self.plot_button = tk.Button(master=self, text="Plot", command=self.plot_data) self.plot_button.grid(row=1, column=2, sticky="we") self.name_label = tk.Label(master=self, text="Out Image Name:") self.name_label.grid(row=2, column=0, sticky="w") self.name_entry = tk.Entry(master=self) self.name_entry.grid(row=2, column=1, columnspan=2, sticky="we") self.save_button = tk.Button(master=self, text="Save", command=self.save_image) self.save_button.grid(row=2, column=3, sticky="e") self.figure = plt.figure(figsize=(5, 4), dpi=150) self.canvas = FigureCanvasTkAgg(self.figure, master=self) self.canvas.get_tk_widget().grid(row=4, column=0, columnspan=4, sticky="we") self.pack() def open_file(self): file_path = tk.filedialog.askopenfilename(filetypes=[("Excel Files", "*.xls")]) self.file_entry.delete(0, tk.END) self.file_entry.insert(tk.END, file_path) def plot_data(self): file_path = self.file_entry.get() if os.path.exists(file_path): data = pd.read_excel(file_path) plt.plot(data['波长(nm)'], data['吸光度'], 'k') plt.xlim(300, 1000) plt.xlabel('Wavelength(nm)', fontsize=16) plt.ylabel('Abs.', fontsize=16) plt.gcf().subplots_adjust(left=0.13, top=0.91, bottom=0.16) plt.savefig('Last Fig', dpi=1000) plt.show() def save_image(self): if self.figure: file_path = tk.filedialog.asksaveasfilename(defaultextension=".png") if file_path: self.figure.savefig(file_path) root = tk.Tk() app = ExcelPlotter(master=root) app.mainloop()帮我增加一个删除当前图像的功能

好的，您可以在 `ExcelPlotter` 类中添加一个名为 `delete_image` 的方法，实现删除当前图像的功能。可以在该方法中调用 `self.figure.clf()` 清空当前图像，然后在界面上更新显示。下面是修改后的代码：

import tkinter as tk 
import pandas as pd 
import matplotlib.pyplot as plt 
from matplotlib.backends.backend_tkagg import FigureCanvasTkAgg 
import os 

class ExcelPlotter(tk.Frame): 
    def __init__(self, master=None): 
        super().__init__(master) 
        self.master = master 
        self.master.title("图方便") 
        self.file_label = tk.Label(master=self, text="Excel File Path:") 
        self.file_label.grid(row=0, column=0, sticky="w") 
        self.file_entry = tk.Entry(master=self) 
        self.file_entry.grid(row=0, column=1, columnspan=2, sticky="we") 
        self.file_button = tk.Button(master=self, text="Open", command=self.open_file) 
        self.file_button.grid(row=0, column=3, sticky="e") 
        self.plot_button = tk.Button(master=self, text="Plot", command=self.plot_data) 
        self.plot_button.grid(row=1, column=2, sticky="we")
        self.delete_button = tk.Button(master=self, text="Delete", command=self.delete_image)
        self.delete_button.grid(row=1, column=3, sticky="e") 
        self.name_label = tk.Label(master=self, text="Out Image Name:") 
        self.name_label.grid(row=2, column=0, sticky="w") 
        self.name_entry = tk.Entry(master=self) 
        self.name_entry.grid(row=2, column=1, columnspan=2, sticky="we") 
        self.save_button = tk.Button(master=self, text="Save", command=self.save_image) 
        self.save_button.grid(row=2, column=3, sticky="e") 
        self.figure = plt.figure(figsize=(5, 4), dpi=150) 
        self.canvas = FigureCanvasTkAgg(self.figure, master=self) 
        self.canvas.get_tk_widget().grid(row=4, column=0, columnspan=4, sticky="we") 
        self.pack() 

    def open_file(self): 
        file_path = tk.filedialog.askopenfilename(filetypes=[("Excel Files", "*.xls")]) 
        self.file_entry.delete(0, tk.END) 
        self.file_entry.insert(tk.END, file_path) 

    def plot_data(self): 
        file_path = self.file_entry.get() 
        if os.path.exists(file_path): 
            data = pd.read_excel(file_path) 
            plt.plot(data['波长(nm)'], data['吸光度'], 'k') 
            plt.xlim(300, 1000) 
            plt.xlabel('Wavelength(nm)', fontsize=16) 
            plt.ylabel('Abs.', fontsize=16) 
            plt.gcf().subplots_adjust(left=0.13, top=0.91, bottom=0.16) 
            plt.show() 

    def delete_image(self):
        if self.figure:
            self.figure.clf()
            self.canvas.draw()

    def save_image(self): 
        if self.figure: 
            file_path = tk.filedialog.asksaveasfilename(defaultextension=".png") 
            if file_path: 
                self.figure.savefig(file_path) 

root = tk.Tk() 
app = ExcelPlotter(master=root) 
app.mainloop()

在界面上添加了一个名为 `Delete` 的按钮，点击该按钮会调用 `delete_image` 方法。该方法会清空当前图像并在界面上更新显示。