TypeError: unsupported operand type(s) for &: 'float' and 'float', PYTHON

Here is part of my code:

import numpy as np
import pyfits 
from astropy.io import ascii

def create_randoms(min_z,max_z,min_mass):

        Do some calculations and use it to 
        write into a file 


        if (max_z == 1.0 and min_mass == 1e13):
                ascii.write(data_1, '/home/Documents/0.0_zphot_1.0.dat', Writer=ascii.FixedWidthNoHeader, delimiter=None)

Exactly in the if statement, I get the error:

TypeError: unsupported operand type(s) for &: 'float' and 'float'

I call the function by:

create_randoms(0.0,1.0,1e13)

I don't know why it doesn't seem to like the values 1.0 and 1e13. I am not using the bitwise & here, and instead I am correctly using the logical operator and. But still it is throwing me with the error.

EDIT:

Full error traceback:

TypeError                                 Traceback (most recent call last)
<ipython-input-83-d5f507b12cc0> in <module>()
----> 1 create_randoms(0.0,1.0,1e13,0,0,1,0,0,0,0,1)

/home/ssridhar/Documents/PhD_materials/Python/correlation_func/100_Hband_halos/jackknife_random_creation.py in create_randoms(min_z, max_z, min_mass, r1, r2, r3, r4, d1, d2, d3, d4)
    119         """ WRITING FILES ACCORDINGLY """
    120 
--> 121         if (max_z == '1.0' and min_mass == '1e13'):
    122                 ascii.write(data_1, '/home/ssridhar/Documents/PhD_materials/2pt_correlation_master_2/Input/100_Hband_halos/jackknife/M200>1e13/K1_100sq_M200>1e13_xyz_0.0<zphot0.001<1.0.dat', Writer=ascii.FixedWidthNoHeader, delimiter=None)
    123 

TypeError: unsupported operand type(s) for &: 'float' and 'float'