python - 如何将命令提示符中的 Python 编码保存为文件？

Question

我刚刚从一本书中用 Python34 键入了一个正在运行的命令提示符的示例。

但现在我想将这个 python 程序保存为文件以备将来使用。由于我以前从未使用过命令提示符，我也在网上搜索过，但大多数都无法回答。

谁能在这里展示解决方案？谢谢。

Answer 1

您可以使用 %save 在 ipython 中保存行:

用法:

%save [options] filename n1-n2 n3-n4 ... n5 .. n6 ... Options:

-r: use ‘raw’ input. By default, the ‘processed’ history is used, so that magics are loaded in their transformed version to valid Python. If this option is given, the raw input as typed as the command line is used instead.

-f: force overwrite. If file exists, %save will prompt for overwrite unless -f is given.

-a: append to the file instead of overwriting it.

This function uses the same syntax as %history for input ranges, then saves the lines to the filename you specify.

It adds a ‘.py’ extension to the file if you don’t do so yourself, and it asks for confirmation before overwriting existing files.

If -r option is used, the default extension is .ipy.

In [1]: def foo():
   ...:     print("hello world")
   ...:     

In [2]: %save my_code 1
The following commands were written to file `my_code.py`:
def foo():
    print("hello world")


In [3]: cat my_code.py
# coding: utf-8
def foo():
    print("hello world")