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How to write txt file in python

Apr 12, 2021 pm 01:48 PM
python txt file

python写txt文件的方法:使用内置函数【open()】,该函数用于打开一个文件,创建一个file对象,语法为【open(name[, mode[, buffering]])】。

How to write txt file in python

本教程操作环境:windows7系统、python3.9版,DELL G3电脑。

python写txt文件的方法:

python中有一个内置函数open(),该函数用于打开一个文件,创建一个 file 对象,相关的方法才可以调用它进行读写。如果以只写模式打开一个文件,那么该函数会在文件不存在时创建一个文件。

语法:

open(name[, mode[, buffering]])
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参数:

  • name : 一个包含了你要访问的文件名称的字符串值。

  • mode : mode 决定了打开文件的模式:只读,写入,追加等。所有可取值见如下的完全列表。这个参数是非强制的,默认文件访问模式为只读(r)。

  • buffering : 如果 buffering 的值被设为 0,就不会有寄存。如果 buffering 的值取 1,访问文件时会寄存行。如果将 buffering 的值设为大于 1 的整数,表明了这就是的寄存区的缓冲大小。如果取负值,寄存区的缓冲大小则为系统默认。

模式:

w 打开一个文件只用于写入。如果该文件已存在则打开文件,并从开头开始编辑,即原有内容会被删除。如果该文件不存在,创建新文件。

代码示例:

 # 创建一个txt文件,文件名为mytxtfile,并向文件写入msg
def text_create(name, msg):
    desktop_path = "C:\\Users\\Administrator\\Desktop\\"  # 新创建的txt文件的存放路径
    full_path = desktop_path + name + '.txt'  # 也可以创建一个.doc的word文档
    file = open(full_path, 'w')
    file.write(msg)   #msg也就是下面的Hello world!
    # file.close()
 
text_create('mytxtfile', 'Hello world!')
# 调用函数创建一个名为mytxtfile的.txt文件,并向其写入Hello world!
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输出结果:

How to write txt file in python

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