How to download a pdf in python from url using just requests?

To download a PDF from a URL using Python with the requests library, you can follow these steps:

```

import requests

url = 'http://www.hrecos.org//images/Data/forweb/HRTVBSH.Metadata.pdf'

r = requests.get(url, stream=True)

with open('/tmp/metadata.pdf', 'wb') as fd:

for chunk in r.iter_content(chunk_size=1024):

fd.write(chunk)

```

This code sends a GET request to the specified URL and downloads the PDF file in chunks. The `stream=True` parameter allows the file to be downloaded in chunks, which is more memory-efficient for large files. The `iter_content` method is used to iterate over the chunks of the file, and the `fd.write` method is used to write each chunk to the file.

Make sure to replace the `url` variable with the URL of the PDF file you want to download. Also, replace the `/tmp/metadata.pdf` path with the desired file path and name for the downloaded PDF file.

Note: The `chunk_size` parameter in the `iter_content` method specifies the size of each chunk in bytes. You can adjust this value depending on your specific needs.