Exercise for reference: 

Please create an empty file (manually as you normally create Python files) and name it requests.py . Make sure the file has that name exactly.

Then paste the following code in the file (manually)

import requests

headers = {'User-agent': 'Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:61.0) Gecko/20100101 Firefox/61.0'}
r = requests.get("http://www.pythonhow.com", headers = headers)
print(r.text[:100])

Executing the script will throw an error. Please fix that error so that you get the expected output and explain why the error happened.

Answer: 

Rename the file name from requests.py  to something else.

Explanation:

In the code, Python is actually referring to the script name, which is requests  And it doesn't find a get attribute for that name. Script names load in the current namespace. They are actually stored in the __name__  variable. You could try to print that variable out, and you would see that it prints your script name. Therefore you should not name your scripts under library names.