Setting a python prompt title a random string-CodePudding

I am new to python and I'm having a little issue where I can't manage to set a title of a command prompt to a random string.

I know how to print random strings but don't really know how to implement it in a title bar.

import random
import string

letters = string.ascii_lowercase
print ( ''.join(random.choice(letters) for i in range(10)) )

this above was pretty easy to find out.

I tried:

letter =  string.ascii_lowercase
os.system("TITLE "   random.choices(letter))

and

letter =  string.ascii_lowercase
tit = random.choices(letter)
os.system("TITLE "   tit))

but none of this worked.

In c I did it like this:

std::string RandomString(const size_t length)
{
    std::string r;
    static const char bet[] = { "ABCDEFGHIJKLMNOPQRSTUVWXYabcdefghijklmnopqrstuvwxyzZ1234567890" };
    srand((unsigned)time(NULL) * 5);
    for (int i = 0; i < length;   i)
        r  = bet[rand() % (sizeof(bet) - 1)];
    return r;
}
int main(main, char**)
{ 
SetConsoleTitleA(RandomString(30).c_str());

//code
}

it looks like this

But I just can't manage to do it in python. Is it even possible and how?

Thanks in advance!

CodePudding user response：

You were on the right track with this code, but in the second line...

letter = string.ascii_lowercase
os.system("TITLE "   random.choices(letter))

You'll want to modify how you grab random letters so you can create a window-title-safe string out of the list random.choices() creates. Here's an example snippet of code that works for me, you can modify k= to change the length of the randomized string.

os.system("title "   "".join(random.choices(letter, k=5))) # 5 character long random string as the title.

CodePudding user response：

You can use the ctypes module that is included with Python to call C APIs in DLLs.

From the SetConsoleTitle docs, the function is available in kernel32.dll. For APIs that take strings they typically have an A version and a W version, which take ANSI and wide strings, respectively. For Python, the str type is passed as a wide string, so prefer the wide version:

import random
import string
import ctypes as ct
from ctypes import wintypes as w           # defines many Windows types as ctypes types.

dll = ct.WinDLL('kernel32')                # DLL where API is found
dll.SetConsoleTitleW.argtypes = w.LPCWSTR, # sequence of argument types
dll.SetConsoleTitleW.restype = w.BOOL      # return type

letters = string.ascii_lowercase
title = ''.join(random.choice(letters) for i in range(10))
print(dll.SetConsoleTitleW(title))  # returns 1 (TRUE) on success
input('Press Enter to continue.')  # title may change back after Python exits.

Note: os.system will work in this case, too, but use input() to pause Python. Once it exits it may change back to command prompt default. It did for me, even for a C version. The command prompt sets the title constantly, at least with Windows 10.

CodePudding user response：

try

os.system("title " tit)