Are singleline if statements or if statements without braces bad practice?

Question

if (condition) { /* do something */ }
else { /* do something */ }

if (condition)
    /* do something */
else
    /* do something */

I was told tha

Answer 1

Have you ever seen code like this in C or C++?

    /*  Warning:  bogus C code!  */

if (some condition)
        if (another condition)
                do_something(fancy);
else
        this_sucks(badluck);

Either the indentation is wrong, or the program is buggy, because an "else" always applies to the nearest "if", unless you use braces.

(Let's just use python. No brackets, just pure clean whitespaces. :P)