title: foursquare code error: TypeError: can only concatenate str (not "tuple") to str
body: <p>I have this project and I know the question is dumb, but I really can't fix it.
  I'd really appreaciate it if someone can help me :)</p>
  <pre><code>import requests
  import json
  
  payload = {}
  headers = {}
  ll1 = 18.036442,42.492103
  ll2 = 18.036808,42.117917
  ll3 = 18.458814,42.485903
  ll4 = 18.453989,42.115408
  
  
  def make_request(payload, headers, ll1, ll2, ll3, ll4):
  
  url = &quot;https://api.foursquare.com/v2/venues/search?client_id=VFFCWVM5UPLGNOS3IAQHQB5LLZBIRYZTGUYW40JHKSEMM0BR&quot; \
        &quot;&amp;client_secret=PCF41XEGDNVIZSZT5ULESYGZUTW02TVYKX5IOAEAAMF5GYP1&amp;v=20210927&amp;token&quot; \
        &quot;=AEOYTHHSPVCSNNBFRT0RCH55KVRXJ1EH2XDSXPIWEWJEMEPG&amp;ll=&quot; +ll1+ +ll2 +ll3 +ll4+ \
        &quot;&amp;intent=browse&amp;radius=10000 &quot;
  response = requests.request(&quot;GET&quot;, url, headers=headers, data=payload)
  return response.text
  
  
  data = make_request(payload, headers, ll1, ll2, ll3, ll4)
  
  print (data)
  </code></pre>
  <p>the error I get is :</p>
  <pre><code>Traceback (most recent call last):
    File &quot;/Users/hessa/Desktop/main01.py&quot;, line 22, in &lt;module&gt;
      data = make_request(payload, headers, ll1, ll2, ll3, ll4)
    File &quot;/Users/hessa/Desktop/main01.py&quot;, line 14, in make_request
      url = &quot;https://api.foursquare.com/v2/venues/search?client_id=VFFCWVM5UPLGNOS3IAQHQB5LLZBIRYZTGUYW40JHKSEMM0BR&quot; \
  TypeError: can only concatenate str (not &quot;tuple&quot;) to str
  
  </code></pre>