Multi line string with arguments. How to declare?
cmd = """line 1
      line 2
      line 3"""

cmd = """line %d
      line %d
      line %d""" % (1, 2, 3)

cmd = """line %d
      line %d
      line %d""" % (
      1,
      2,
      3)

'''line {0}
line {1}
line {2}'''.format(1,2,3)

args = (1,2,3)
'''line {0}
line {1}
line {2}'''.format(*args)

args = {'arg1':1, 'arg2':2, 'arg3':3}
'''line {arg1}
line {arg2}
line {arg3}'''.format(**args)

cmd = "line %dn"%1 +
      "line %dn"%2 +
      "line %dn"%3

cmd = "n".join([
      "line %d"%1,
      "line %d"%2,
      "line %d"%3])

cmd = """line %d
      line %d
      line %d""" % (
          1,
          2,
          3
      )