The true statement among the options provided is: A name error occurs if the variable is referenced before it is declared.
Here's a brief explanation for the other statements:
- A name error does not occur if a colon is put in the wrong place. This typically results in a syntax error.
- An else statement requires a corresponding if statement; thus, using an else without an if would also result in a syntax error, not a name error.
- Using two equals signs (
==
) instead of one (=
) is a mistake in the context of assignment versus comparison, resulting in a logical error or potentially a syntax error, but not a name error.
So, the first statement regarding name errors is the only correct one in this context.