Lists

 
Basic operations: 
  a = []                             # creates an empty list
  a = [1]*5                          # creates   [1, 1, 1, 1, 1]
  L = [2]*3                          # creates   [2, 2, 2]
  a.append( 12)                      # appends an element
  a.extend( L)                       # appends a list to a list [1, 1, 1, 1, 1, 2, 2, 2]
  a.sort()                           # sorts a list
  a.reverse()                        # reverses a list
  del a[0]                           # deletes an element
  del a                              # deletes the list
  len( a)                            # the length

  a = ['spam', 'eggs', 100, 1234]
  a[0]                               # 'spam', first element
  a[-1]                              # 1234, last element

  a[0:2] = [1, 12]                   # [1, 12, 100, 1234]
  a[0:2] = []                        # [100, 1234]
  a[1:1] = ['bletch', 'xyzzy']       # [1, 'bletch', 'xyzzy', 1234]
  b = a[2:]                          # ['xyzzy', 1234]
  b = a[:]                           # copies a list, see below

Manipulations: 
  q = [2, 3]
  p = [1, q, 4]
  p[1]                               # [2, 3]
  p[1][0]                            # 2
  p[1].append('xtra')                # [1, [2, 3, 'xtra'], 4]
  q                                  # [2, 3, 'xtra']
  r = [4, 5]
  s = q + r                          # [2, 3, 4, 5] list concatenation
  s.insert( 1, 123)                  # [2, 123, 3, 4, 5] 
  s.pop()                            # [2, 123, 3, 4]
  s.pop(0)                           # [123, 3, 4]

Printing: 
  freshfruit = ['  banana', '  loganberry ', 'passion fruit  ']
  print( [weapon.strip() for weapon in freshfruit])

Searching:
  if elm in list:
      print( elm, "is in the list")