Python 内置了文件IO的函数:

  • 写入文件
    • 首先打开(创建)一个文件,可以以 txt 形式纯村
    • 然后写入数据
    • 最后关闭文件
my_file = open('my_file.txt','w') 
# w for write, r for read, a for append(追加内容)

text = 'This is 1st line.\nThis is 2nd line.\nThis is 3rd line.'
# \n 换行 

my_file.write(text)
my_file.close()
  • 读取文件
    • 打开文件
    • 读取内容
file = open('my_file.txt','r')
content = file.read()
print(content)

>>>
This is 1st line.
This is 2rd line.
This is 3rd line.

使用 readline 命令可以逐行读取。