Can't read var mail urllib.request

It looks like you're trying to read a variable named mail using urllib.request, but it's not working.

Here are a few things to check:

  1. Make sure mail is a valid variable: Check if you have defined mail somewhere in your code. If it's not defined, you'll get a NameError.
  2. Check the type of mail: urllib.request expects a URL (Uniform Resource Locator) as input, not a variable. If mail is not a string, you'll need to convert it to a string or use a different approach.
  3. Verify the URL: If mail is a URL, make sure it's a valid one. You can check this by copying the URL and pasting it into a web browser to see if it loads correctly.

Here's an example of how you might use urllib.request to read a URL:

import urllib.request

url = "https://example.com"  # replace with your URL
response = urllib.request.urlopen(url)
html = response.read().decode("utf-8")
print(html)

If you're still having trouble, please provide more context or code, and I'll do my best to help you troubleshoot!