Python - bypass Malwarebytes blocked websites with urllib?

Here's a part my code that gets source code from websites:

#Header dictionary
headers = {}
#Header for websites
headers['User-Agent'] = "Mozilla/5.0 (X11; Linux i686) AppleWebKit/537.17 (KHTML, like Gecko) Chrome/24.0.1312.27 Safari/537.17"

#Urllib code
req = urllib.request.Request(url, headers=headers)
resp = urllib.request.urlopen(req)
respData = resp.read()

This works, however my Malwarebytes blocks some websites even when I use this program. Is there a way I can bypass this block?

I want to get the source code and possibly write it to a txt file, all without Malwarebytes blocking anything but avoiding malicious stuff.

Solution

A third party program (Malwarebytes) is controlling network traffic from and to your computer. You are at the mercy of this software.

Unless this program provides a method to bypass its checks (which I highly doubt) the advice is that

Disable Malwarebytes
Run your Python script on a different computer
Contact Malwarebytes how to adjust their program to allow your script (highly unlikely they have any bypass mechanism or they will do any exception for single individual)

Also as a further security advise I suggest you run and visit malware sites in a browser run inside a Linux virtual machine.