line=file1.readline() #readline()是读取一行 # 这里可以进行逻辑处理 file2.write('"'+line[:]+'"'+",")ifnot line : #如果行读取完成,就直接跳出循环break#记住文件处理完成关闭文件是一个号习惯 file1.close() file2.close() 读文件有3种方法: read()将文本文件所有行读到一个字符串中。 readlin...
# 打开文件,open(file: Union[str, bytes, int],mode: str = ...,buffering: int = ...,encoding: Optional[str] = ...,errors: Optional[str] = ...,newline: Optional[str] = ...,closefd: bool = ...,opener: Optional[(str, int) -> int] = ...) file = open(r"C:\Users\1176...
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...
Filenameis'zen_of_python.txt'.Fileisclosed. 1. 2. 但是此时是不可能从文件中读取内容或写入文件的,关闭文件时,任何访问其内容的尝试都会导致以下错误: 复制 f.read() 1. Output: 复制 ---ValueErrorTraceback(mostrecentcalllast)~\AppData\Local\Temp/ipykernel_9828/3059900045.pyin<module>--->1f.r...
"""readlines([size]) -> list of strings, each a line from the file. Call readline() repeatedly and return a list of the lines so read. The optional size argument, if given, is an approximate bound on the total number of bytes in the lines returned. """ ...
file:文件路径。 mode:rt是默认格式,读取文本文档。rd读取二进制格式。 stream中的对象只能读取一次,后面在使用read不能读出内容。 stream = open(r'E:\Project\a\a.txt')#建立一个流container = stream.read()#读取流中的数据print(container) line= stream.readline()#读取一行print(line, end='')#如果不...
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 ...
of characters -- called a string -- to a file. You cannot use write() to write arrays or Python lists to a file. If you try to use write() to save a list of strings, the Python interpreter will give the error, "argument 1 must be string or read-only character buffer, not list...
假设需求是逐行读取文件中的内容并进行处理,当文件读取完毕时,捕获 "Ran out of input" 异常并结束程序。 代码语言:javascript 代码运行次数:0 运行 AI代码解释 pythonCopy codetry:withopen('data.txt','r')asfile:line=file.readline().strip()whileline:# 当文件还有内容时循环 ...
file_object = open('thefile.txt') try: all_the_text = file_object.read( ) finally: file_object.close( ) Python读写文件的五大步骤一、打开文件Python读写文件在计算机语言中被广泛的应用,如果你想了解其应用的程序,以下的文章会给你详细的介绍相关内容,会你在以后的学习的过程中有所帮助,下面我们就详...