title: When I run code with NumPy imported it does not run
body: <pre><code>'''The prime factors of 13195 are 5, 7, 13 and 29.
  What is the largest prime factor of the number 600851475143 ?'''
  import numpy as numpy
  
  a = 0
  primeFactors = []
  def findPrimeFactor(num):
      global a
      global primeFactors
      while numpy.prod(primeFactors) != num:
          if a%2 == 0 and a != 2:
              a =+ 1
          else:        
              d = num/a
              if isinstance(d, int) == True:
                  primeFactors.append(a)
                  a =+ 1
  
  findPrimeFactor(13195)
  print(primeFactors)
  print(&quot;Bok&quot;)
  </code></pre>
  <p>I imported NumPy after I installed everything propertly (pip, python, NumPy). I also added everyting to Path. Code is not running in VSCode, Idle and also not in Sublime Text 3. I am using Python 3.8.</p>