Clear sys.argv in python

Question

When user specify a password in MySQL cli, aka -pXXXXXX, the password parameter is replaced to -p****** in argv array.

So when someone check the process list with ps, they can't see the password.

How can I do the same in Python? This doesn't work obviously

for arg in sys.argv[1:]:
    arg = ""

Answer 1

sys.argv = [sys.argv[0]]

works and is more efficient and elegant than deleting all but the first element. I can't confirm this would overwrite or erase previous value of sys.argv in memory though.