Cleans up the list of chemical elements from the editable source of the Wikipedia article: http://en.wikipedia.org/wiki/List_of_elements, generating just a list of atomic number and element names

cleanup_element_list.py

file = open('List_of_Elements.wiki', encoding='utf-8')
text = file.read()
# print(len(text), 'chars in the text')

lines = text.split('\n') # split by newlines
# print(len(lines), 'lines in the text')

for line in lines:
  cells = line.split('||')
	if len(cells) < 3 or not cells[2].startswith(' [['):
		continue
	atomic_number = cells[0].replace('|', '').strip()
	element_name = cells[2].replace('[[', '').replace(']]', '').strip()
	if '|' in element_name:
		element_name = element_name.split('|')[1]
	print(atomic_number, element_name)