defprint_specific_lines(file_name,line_numbers):withopen(file_name,'r')asfile:lines=file.readlines()forline_numberinline_numbers:ifline_number<=len(lines):print(lines[line_number-1])else:print(f"Line{line_number}does not exist in the file.")file_name='example.txt'line_numbers=[1,3,5]...
下面是实现该功能的Python代码: pythonCopy codedefread_specific_line(filename,line_number):withopen(filename,'r')asfile:forline_num,lineinenumerate(file,1):ifline_num==line_number:returnline.rstrip()filename='example.txt'line_number=3line_content=read_specific_line(filename,line_number)print(f...
'w') as file: # 循环输入内容 while True: # 输入内容 text = input("请输入要写入文件的内容(输入'quit'结束):") # 判断是否达到Sentinel值 if text.lower() == sentinel: break # 写入内容到文件 file.write(text + '\n') # 关闭文件 file.close() ...
file = open("file_name", "access_mode")Example 1Let us look at an example of opening a file in write mode. If the example.txt file doesn’t exist, the open() function will create a new file.file = open('example.txt', 'w') ...
使用open() 函数以写入模式打开文件 使用文件对象的 write() 方法将字符串写入 使用文件对象的 close() 方法将文件关闭2.1. 将字符串写入文本文件在接下来的示例中,我们将按照上述步骤将一个字符串常量写入到一个文本文件。# Write String to Text File text_file = open("D:/work/20190810/sample.txt", "w...
You’ll also learn how to open, read, write and close files in Python. File handling is a good way to persist data after a program terminates. Data from a computer program is saved to a file and can be accessed later. Python, like many other programming languages, provides handy methods...
After you understand the process, you can use the alternate template to save time when you write your own extensions.Add C++ file to projectNext, add a C++ file to each project.In Solution Explorer, expand the project, right-click the Source Files node, and select Add > New Item. In ...
Specific Formats Processing Libraries for parsing and manipulating specific text formats. General tablib - A module for Tabular Datasets in XLS, CSV, JSON, YAML. Office docxtpl - Editing a docx document by jinja2 template openpyxl - A library for reading and writing Excel 2010 xlsx/xlsm/xltx/...
After you understand the process, you can use the alternate template to save time when you write your own extensions.Add C++ file to projectNext, add a C++ file to each project.In Solution Explorer, expand the project, right-click the Source Files node, and select Add > New Item. In ...
file.write(filename, filename.name) shutil.rmtree(self.temp_directory)if__name__ =="__main__": ZipReplace(*sys.argv[1:4]).zip_find_replace() 为了简洁起见,对于压缩和解压缩文件的代码文档很少。我们目前关注的是面向对象的设计;如果您对zipfile模块的内部细节感兴趣,请参考标准库中的文档,可以在线...