list element == 0.000 not captured by conditional statement

Question

I have a list that looks like this: \'\'\'

[\'X:GLU:422\\tX:LYS:410\\t0.434\\n\',
 \'X:GLU:422\\tX:ILE:424\\t0.210\\n\',
 \'X:ARG:414\\tX:GLU:422\\t0.745\\n\'