title: List of comprehension on multiple variables in order to concatenate into a list of strings the results
body: <p>I have two lists.
  I would like to concatenate in order to get a list of strings.
  The first list is composed of strings
  The second list is composed of a Timestamp.</p>
  <p>I would concatenate as follow in one line with a list of comprehension.</p>
  <pre><code>#just for creating something similar to my actual situation
  import pandas as pd
  quarter=[&quot;First Quarter&quot;,&quot;Second Quarter&quot;,&quot;Third Quarter&quot;,&quot;Fourth Quarter&quot;]
  quarter_forecast_day=pd.date_range(start=&quot;12/15/2020&quot;,periods=4)
  </code></pre>
  <p>I would like something like that:</p>
  <pre><code>str(quarter[x]+'\n'+quarter_forecast[y].strftime(&quot;%d/%m/%Y&quot;))
  </code></pre>
  <p>What I tried:</p>
  <pre><code>#quarter_label=[str(quarter[x]+'\n'+y.strftime(&quot;%d/%m/%Y&quot;)) for x,y in [quarter, quarter_forecast_day]]
  #too many values to unpack (expected 2)
  
  #quarter_label=[str(quarter[x]+'\n'+y.strftime(&quot;%d/%m/%Y&quot;)) for x,y in (quarter, quarter_forecast_day)]
  #too many values to unpack (expected 2)
  
  #quarter_label=[str(quarter[x]+'\n'+y.strftime(&quot;%d/%m/%Y&quot;)) for x,y in quarter, quarter_forecast_day]
  #invalid sintax
  
  #quarter_label=[lambda x,y:str(quarter[x]+'\n'+y.strftime(&quot;%d/%m/%Y&quot;) for x,y in [quarter, quarter_forecast]]
  #invalid sintax
  
  quarter_label=[lambda x,y:str(quarter[x]+'\n'+y.strftime(&quot;%d/%m/%Y&quot;) for x,y in (quarter, quarter_forecast)]
  #invalid sintax
  </code></pre>
  <p>Before asking I read <a href="https://stackoverflow.com/questions/40351085/multiple-variables-in-list-comprehension">this question</a>, <a href="https://stackoverflow.com/questions/38269538/list-comprehension-iterate-two-variables-at-the-same-time">this one</a> and <a href="https://stackoverflow.com/questions/38269538/list-comprehension-iterate-two-variables-at-the-same-time">this one</a>. But I am still struggling to find a proper way to apply it.</p>