使用命令行参数打开Python文件

Question

NOTE : I don't know if this has been asked before, but I couldn't find what wording would be used for asking this question

I am creating a python file, and inside it needs to have a name of a file. What I want is when you put python Compiler.py <Filename> in the command line, it takes the filename and uses it in the python file.

How would I go about doing this?

Answer 1

someVariable = sys.argv[1]

This will take the first element after the file name and store it in the variable.

someOtherVariable = sys.argv[2]

will take the second element, and so forth.

python Compiler.py firstArg secondArg NthArg

Note: You will need to import sys to use the sys module.

Answer 2

Use sys.argv to get the args that are passed to the script.

import sys
open(sys.argv[1], 'w').write('hello world')