问多部分表单-数据、POST方法，页面中包含多个窗体。

EN

<form enctype="multipart/form-data" action="/page1" method="GET"> ... </form>
...
<form enctype="multipart/form-data" action="/page2" method="POST"> 
  <input type="file" name="smiles_file">
  <input type="text" name="smiles_str">
  ...
  <button name="pred_type" type="submit" value="adme"> BT1 </button>
  <button name="pred_type" type="submit" value="toxicity"> BT2 </button>
</form>

#imports
import requests
from bs4 import BeautifulSoup as bs

#commmon vars
url = 'www.exampleurl.com/site'
hd  = {
"User-Agent": "Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/70.0.3538.67 Safari/537.36"
}
dt  = {
'smiles_str': 'CC(=O)OC1=CC=CC=C1C(=O)O',
'pred_type': 'adme'
}

#scraping
with requests.Session() as rs:
    result = rs.get(url, data=dt, headers=hd)
    print ("Code: %s\nHTML\n%s" % (result.status_code, result.text))