导入csv模块。 定义一个名为write_empty_file的函数,并接受一个文件名作为参数。 使用open函数打开文件,并将其赋值给一个变量file。 使用Writer函数创建一个名为writer的Writer对象,并将其关联到文件对象file上。 调用Writer对象的writerow方法,并传入一个空列表[]作为参数,用于写入一个空行。 关闭文件。 下面是使用...
以上代码中,我们使用open()函数打开一个名为"empty_file.txt"的文件,并将文件模式设置为写入模式(“w”)。然后,我们立即关闭文件,这样可以确保文件被正确处理并保存。 请注意,这段代码创建的文件是一个空白文件,因为我们没有向文件中写入任何内容。如果您想要向文件中写入文本内容,可以使用write()方法。以下是一个...
"w"- Write - will create a file if the specified file does not exists Example Create a new file called "myfile.txt": f =open("myfile.txt","x") Run Example » Result: a new empty file is created. Note:If the file already exist, an error will be raised. ...
#open the filetext_file=open('/Users/pankaj/file.txt','w')#initialize an empty listword_list=[]#iterate 4 timesforiinrange(1,5):print("Please enter data: ")line=input()#take inputword_list.append(line)#append to the listtext_file.writelines(word_list)#write 4 words to the filete...
We can open a file and do different operations on it, such as write new contents into it or modify a file for appending content at the end of a file. After reading this tutorial, you’ll learn: – Writing into both text and binary files ...
>>>f2=open('/tmp/test.txt','r+')>>>f2.read()'hello girl!'>>>f2.write('\nhello boy!')>>>f2.close()[root@node1 python]# cat/tmp/test.txt hello girl!hello boy! 可以看到,如果在写之前先读取一下文件,再进行写入,则写入的数据会添加到文件末尾而不会替换掉原先的文件。这是因为指针引...
“an object exposing a file-oriented API (with methods such as read() or write()) to an underlying resource.” 文件对象分为3类: Text files Buffered binary files Raw binary files Text File Types 文本文件是你最常遇到和处理的,当你用open()打开文本文件时,它会返回一个TextIOWrapper文件对象: ...
defempty_recycle_bin():os_name=platform.system()ifos_name=="Windows":# 清空Windows回收站try:from winshellimportrecycle_binrecycle_bin().empty(confirm=False,show_progress=False,sound=False)except ImportErrorase:print(e)elif os_name=="Darwin":# 清空macOS废纸篓try:importglobforfileinglob.glob(os...
closed file.mode file.readinto file.truncate file.encoding file.mro file.readline file.write file.errors file.name file.readlines file.writelines file.fileno file.newlines file.seek file.xreadlines file.flush file.next file.softspace In [6]: f1=open('/etc/passwd','r') In [7]: f1 Out[...
the file on disk reflects the data written."""passdefwritelines(self, sequence_of_strings):#real signature unknown; restored from __doc__将一个字符串列表写入文件"""writelines(sequence_of_strings) -> None. Write the strings to the file. ...