code: def replace(text, old, new, count=None, strip=False):
      '''
      Replace an ``old`` subset of ``text`` with ``new``.
      
      ``old`` type may be either a string or regular expression.
      
      If ``strip``, remove all leading/trailing whitespace.
      
      If ``count``, replace the specified number of occurence, otherwise replace all.
      '''
      if is_string(old):
          text = text.replace(old, new, -1 if count is None else count)
      else:
          text = old.sub(new, text, 0 if count is None else count)
      
      if strip:
          text = text.strip(None if strip == True else strip)
      
      return texf replace(text, old, new, count=None, strip=False):
      '''
      Replace an ``old`` subset of ``text`` with ``new``.
      
      ``old`` type may be either a string or regular expression.
      
      If ``strip``, remove all leading/trailing whitespace.
      
      If ``count``, replace the specified number of occurence, otherwise replace all.
      '''
      if is_string(old):
          text = text.replace(old, new, -1 if count is None else count)
      else:
          text = old.sub(new, text, 0 if count is None else count)
      
      if strip:
          text = text.strip(None if strip == True else strip)
      
      return text
docs: Replace an ``old`` subset of ``text`` with ``new``.
      
      ``old`` type may be either a string or regular expression.
      
      If ``strip``, remove all leading/trailing whitespace.
      
      If ``count``, replace the specified number of occurence, otherwise replace all.