pyinstaller generated code gets flagged by NIS

[kris44dad]

I just started learning python. I wrote the following source code to generate a ~1GB size file.

seed_number = 1073741824
datastring = "000000000000000000000000"
limit = int(seed_number/len(datastring))
output_file = open("datafile.txt",mode='a')


for i in range(limit,0,-1):
    output_file.write(datastring)
    
output_file.close()

I used pip to download and install pyinstaller, and 'compiled' my source. Norton Internet Security flagged the resulting executable as 'Heur.AdvML.B' I'm assuming it's a false positive, of course. I was just wondering if others using pyinstaller, have run into this.

Is there a alternate executable generator I should be using?