#Python 3, 45 bytes

c='print(end="c=%r;exec(c"%c+c[8*4])';exec(c)

Switching to Python 3 so that the trailing newline can be easily removed.

I started out with a stupid structure that had 2 variables instead of 1, but switching to 1 variable only made it 4 bytes shorter.

-(4 + 3) bytes by Dennis.

Python 3, 45 bytes

c='print(end="c=%r;exec(c"%c+c[8*4])';exec(c)

Switching to Python 3 so that the trailing newline can be easily removed.

I started out with a stupid structure that had 2 variables instead of 1, but switching to 1 variable only made it 4 bytes shorter.

-(4 + 3) bytes by Dennis.

#Python 3, 48 bytes

c='print(end=len(c)%5*"c=%r;exec(c)"%c)';exec(c)

Switching to Python 3 so that the trailing newline can be easily removed.

I started out with a stupid structure that had 2 variables instead of 1, but switching to 1 variable only made it 4 bytes shorter.

-4 bytes by Dennis.

#Python 3, 45 bytes

c='print(end="c=%r;exec(c"%c+c[8*4])';exec(c)

Switching to Python 3 so that the trailing newline can be easily removed.

I started out with a stupid structure that had 2 variables instead of 1, but switching to 1 variable only made it 4 bytes shorter.

-(4 + 3) bytes by Dennis.

#Python 3, 52 bytes

c='print(end="c=%r;exec(c)"%c);len(c)!=40<x';exec(c)

Switching to Python 3 so that the trailing newline can be easily removed.

I started out with a stupid structure that had 2 variables instead of 1, but switching to 1 variable only made it 4 bytes shorter.

#Python 3, 48 bytes

c='print(end=len(c)%5*"c=%r;exec(c)"%c)';exec(c)

Switching to Python 3 so that the trailing newline can be easily removed.

I started out with a stupid structure that had 2 variables instead of 1, but switching to 1 variable only made it 4 bytes shorter.

-4 bytes by Dennis.