delete elements in a for loop code example
Example: python list .remove() in for loop breaks
elements = ['el1', 'el2', 'el3', 'el4', 'el5']
for el in elements[:]: #[:] shallow-copies the list
if el.lower() in ['el2', 'el3', 'el4']:
elements.remove(el)
// elements -> ['el1', 'el5']