Generate the file names in a directory tree by walking the tree either top-down or bottom-up. For each directory in the tree rooted at directory top (including top itself), it yields a 3-tuple (dirpath, dirnames,filenames)...每次能够得到一个三元tupple。当中第一个为起始路径,第二个为起...
1importshutil23shutil.copy("src.txt","dst.txt")#输出 'dst.txt'4shutil.copy("src.txt","/tmp/")#输出 '/tmp/src.txt'5shutil.copy("src.txt","/Dota2/")#传入一个不存在的目录,出现IsADirectoryError:67shutil.copy2("src.txt","dst.txt")89shutil.copyfile("src.txt","dst.txt")1011shu...
close() for x in lines: print(x,end="") except Exception as e: print(e) 输出结果: [Errno 2] No such file or directory: 'D:\\Python学习\\python基础课\\测试用文件夹\\一个不存在的文件.txt' remark:异常处理参考资料 Python 异常处理 | 菜鸟教程 添加文件内容 f=open("D:\\Python学习\...
str3: [Finished in 0.1s] 可以看到,第三行的str3已经没有什么输出了,因为read在读取对应长度的字符串后,文件指针也移动到对应的位置,所以后来的read只能接着读取,而不能重新回到内容头部读取,下文的seek()会讲解如何移动文件指针。 (2)<file>.readline(size=-1) #从文件中读取一行内容,如果给出参数,读入该...
for root, dirs, files in os.walk('my_directory'): for file in files: print(os.path.join(root, file)) 1. 2. 3. 4. 5. 6. 7. 8. 9. 7)文件下载 (小文件)使用requests库直接下载文件到内存后保存: import requests url = 'https://example.com/file.txt' ...
for filename in os.listdir(directory): filepath=os.path.join(directory,filename) if os.path.isfile(filepath): count+=1 return count #示例调用 folder_path='/path/to/folder'#替换为实际的文件夹路径 file_count=count_files(folder_path) ...
path.join('path_to_directory', new_filename)) print(f'Renamed {file} to {new_filename}') 1.4 异常处理 在重命名文件时,可能会出现各种异常,例如目标文件已存在、没有足够权限等。为了确保程序的健壮性,应该添加异常处理。 代码语言:javascript 代码运行次数:0 运行 AI代码解释 try: for file in ...
# Write String to Text File in Text Mode text_file = open("D:/work/20190810/sample.txt", "wt") n = text_file.write('Python, Python~') text_file.close() print(n) 1. 2. 3. 4. 5. 执行和输出: 再次打开该文件查看其内容: ...
cookie_str=r'JSESSIONID=xxxxxxxxxxxxxxxxxxxxxx; iPlanetDirectoryPro=xxxxxxxxxxxxxxxxxx'#把cookie字符串处理成字典,以便接下来使用 cookies={}forlineincookie_str.split(';'):key,value=line.split('=',1)cookies[key]=value 方法二:模拟登录后再携带得到的cookie访问 ...
Here is the complete code to create this. This is all done in one Python file! importreflexasrximportopenai openai_client = openai.OpenAI()classState(rx.State):"""The app state."""prompt =""image_url =""processing =Falsecomplete =Falsedefget_image(self):"""Get the image from the pro...