title: AttributeError: 'builtin_function_or_method' object has no attribute 'replace'
body: <p>When I try to use this in my program, it says that there's an attribute error</p>
  
  <pre><code>'builtin_function_or_method' object has no attribute 'replace'
  </code></pre>
  
  <p>but I don't understand why.</p>
  
  <pre><code>def verify_anagrams(first, second):
      first=first.lower
      second=second.lower
      first=first.replace(' ','')
      second=second.replace(' ','')
      a='abcdefghijklmnopqrstuvwxyz'
      b=len(first)
      e=0
      for i in a:
          c=first.count(i)
          d=second.count(i)
          if c==d:
              e+=1
      return b==e
  </code></pre>