title: How can i execute command "pip install " with concatenating with array element in powershell
body: <p>I have an array with Python modules names. I want to iterate over array elements and for each element in the array I want to execute command <code>pip install</code>. Getting error with line</p>
  
  <p><code>pip install  + $modules[$i]</code></p>
  
  <p>Here is how my code looks like.</p>
  
  <pre><code>$modules = "urllib", "pandas", "selenium", "requests", "numpy"
  
  for($i=0; $i -lt $modules.length; $i++) {
      pip install  + $modules[$i]
  }
  </code></pre>