lisp-vs-py

http://common-lisp.net/project/iterate/#examples

(loop with max-elt = nil
      with max-key = 0
      for elt in list-of-lists
      for key = (length elt) do
      (when (> key max-key)
        (setq max-elt elt
              max-key key))
      finally (return max-elt))

(iterate (for elt in list-of-lists)
         (finding elt maximizing (length elt)))

 ****************************
 *  Directly to Python:     *
 ****************************

max-elt = None
max-key = 0
for elt in list-of-lists:
    for key in range(len(elf):
       if key > max-key:
            max-elt = elf
            max-key = key
return max-elt

#There is no similar func to "finding maximizing" at all, you can just use simple max-finding alg
tmp = []
for elt in list-of-lists:
    if len(elt) > len(tmp):
        tmp = elt

 ****************************
 *  Using Python power:     *
 ****************************

#it may be shorter, but it already looks better
max-elt = None
max-key = 0
for elt in list-of-lists:
    current-max-var = max(elt)
    if current-max-var > max-key:
        max-key, max-elt =  current-max-var, elt

#no comments
max(list-of-lists)

#you can use any you function for working like it done in CL iterate
max(list-of-lists, key=len)