title: Why is the "else" line giving an invalid syntax error?
body: <p>I'm having this error:</p>
  
  <pre><code>File "zzz.py", line 70
      else:
         ^
  SyntaxError: invalid syntax
  </code></pre>
  
  <p>The line which causes the problem is marked with a comment in the code:</p>
  
  <pre><code>def FileParse(self, table_file):
      vars={}
      tf = open(table_file, 'r')
      for line in tf:
          if line.startswith("#") or line.strip() == "": pass
          elif line.startswith("n_states:"):
              self.n_states = str(line[9:].strip())
          elif line.startswith("neighborhood:"):
              self.neighborhood = str(line[13:].strip())
          elif line.startswith("symmetries:"):
              self.symmetries = str(line[11:].strip())
          elif line.startswith("var "):
              line = line[4:]
              ent = line.replace('=',' ').\
              replace('{',' ').\
              replace(',',' ').\
              replace(':',' ').\
              replace('}',' ').\
              replace('\n','').split()
              vars[ent[0]] = []
              for e in ent[1:]:
                  if e in vars: vars[ent[0]] += vars[e]
                  else: 
                      vars[ent[0].append(int(e))]     
          else:
              rule = line.strip().split(",")
              for k in vars.keys():
                  if k in rule:
                      for i in vars[k]:
                          change = rule.replace(k, i)
                          change = [int(x) for x in change]
                          w.rules.append(Rule(change[:5],change[5])
  
                  else: # line which causes the problem
  
                      rule = [int(x) for x in rule]
                      w.rules.append(Rule(rule[:5],rule[5]))                  
      tf.close()
      self.parse_status "OK"
      return w.rules
  </code></pre>
  
  <p><code>w.rules</code> is variable which is assigned to "World" class.</p>
  
  <p>To be honest I have no idea why I get this. Before everything was fine and now that error shows up after adding some extra instructions in other indented blocks.</p>
  
  <p>Any ideas?</p>