1 with open('test.txt') as file_object: 2 contents = file_object.read() 3 print(contents) 1. 2. 3. 运行结果: 工作原理: #1 open()方法用于打开一个文件:输入参数---文件名称(默认在当前目录中查找);返回一个表示文件的对象。 #1 关键字with:打开文件后,Python会在合适的时候将打开的文件自动关...
read_file.py #!/usr/bin/python with open('works.txt', 'r') as f: for line in f: print(line.rstrip()) The example iterates over the file object to print the contents of the text file. $ ./read_file.py Lost Illusions Beatrix Honorine The firm of Nucingen Old Goriot Colonel ...
with open('pi_digits.txt') as file_object: contents=file_object.read()print(contents.rstrip()) 2、文件路径 2.1、相对路径 with open('text_files/filename.txt') as file_object: 2.2、绝对路径 file_path ='/home/ehmatthes/other_files/text_files/_filename_.txt'with open(file_path) as file...
read(size=-1) #从文件中读取整个文件内容,如果给出参数,读入前size长度的字符串(文本文件)或字节流(二进制文件),size=-1默认读取全部。 栗子1. #test2_1.py文件 with open("English_Study_Dict.txt",'rt') as file: a=file.readable() #判断文件是否可读取 b=file.writable() #判断文件是否可写入...
在learnFile.py所在的目录中查找test_text.txt 并打开 #coding=UTF-8importsys reload(sys) with open('test_text.txt') as file_object: contents=file_object.read()printcontents with open():在不需要访问文件后将其关闭 也可以用open(),close()。但如果程序存在bug,可能导致close()不执行,文件不关闭。
contents = f.read() print(contents) 输出结果如下: Beautiful is better than ugly. Explicit is better than implicit. Simple is better than complex. ... 以下示例使用 readlines() 方法读取文件,返回了一个字符串列表: lines = [] with open('the-zen-of-python.txt') as f: ...
1、read()方法 read（）方法表示一次读取文件全部内容，该方法返回字符串。The read() method means reading the entire contents of the file at once, and the method returns a string.2. The readline() method 2、readline（）方法 该方法每次读出一行内容，所以，读取时占用内存小，比较适合大文件，该方法...
Reading and Writing to the same file Reading File in Reverse Order Reading a Binary file Access Modes for Reading a file To read the contents of a file, we have toopen a filein reading mode. Open a file using the built-in function calledopen(). In addition to the file name, we need...
对于open方法返回的file文件对象,它常用函数有: close():关闭文件 flush():将内部缓冲区数据立刻写入文件 read([size]):从文件读取指定的字节数,如果没有或者是负数值,则读取所有 readline():读取整行,包含换行符\n字符 readlines([sizeint]):读取所有行并返回列表,若给定sizeint>0,返回总和大约为sizeint字节的...
Traverse the information in the startup_info file and read the *EFFECTIVE_MODE field. If it has been set, no processing is required. If it is set to None, the default activation mode is used based on the file type. The system software package and configuration file take effect only ...