Reading/Writing 到 Python 中的文件

Question

我有一个 python 代码，上面有一些打印 statements.Now，我想从一个文件读取输入并将其输出到另一个文件 file.How 我要这样做吗？我应该包括这个吗？

代码 :

fo = open("foo.txt", "r")
foo = open("out.txt","w")

Answer 1

您可以使用：

with open("foo.txt", "r") as fo, open("out.txt", "w") as foo:
    foo.write(fo.read())

Answer 2

天真的方式：

fo = open("foo.txt", "r")
foo = open("out.txt","w")
foo.write(fo.read())
fo.close()
foo.close()

更好的方法，使用 with:

with open("foo.txt", "r") as fo:
    with open("out.txt", "w") as foo:
        foo.write(fo.read())

不错的方法（使用为您完成的模块 - shutil.copy）：

from shutil import copy
copy("foo.txt", "out.txt")

Reading/Writing to a file in Python