Python subprocess arguments
command-line-arguments, python, subprocess
Solution
As JBernardo mentioned in a comment, separate the `"-bufsize 4096"` argument into two, `"-bufsize", "4096"`. Each argument needs to be separated when `subprocess.call` is used with `shell=False` (the default). You can also specify `shell=True` and give the whole command as a single string, but this is not recommended due to potential security vulnerabilities.
You should not need to use string formatting where you have `"%s" % url`. If `url` is a string, pass it directly, otherwise call `str(url)` to get a string representation.
Problem
For example I am using `ffplay` and want to run this command `-bufsize[:stream_specifier] integer (output,audio,video)` At the moment I have this: ``` subprocess.call(["ffplay", "-vn", "-nodisp","-bufsize 4096", "%s" % url]) ``` But this says it is invalid.