title: pypdf2 is not defined
body: <p>new to python 3.7 version. 
  Trying to use <code>pypdf2</code> but I have an error that I can't fix by myself:</p>
  
  <p>my comand:</p>
  
  <pre><code>pdfFile2 = open(r"C:\Users\Luca\Desktop\python\tutorial\doc2.pdf", "wb")  # w=write, r=read, b=binary
  writer1 = pyPDF2.PdfFileWriter()
  </code></pre>
  
  <p>The error:
  <code>Traceback (most recent call last):
    File "C:/Users/Luca/Desktop/python/tutorial/tutorial.py", line 8, in &lt;module&gt;
      writer1 = pyPDF2.PdfFileWriter()</code></p>
  
  <p><code>NameError: name 'pyPDF2' is not defined</code></p>
  
  <p>I have installed the <code>pypdf2</code> library but I cant go on, how can I fix this?</p>