gistfile1.txt

task append_array {
  Array[Int] input_array
  Array[Int] elements_to_add
  command {
    python <<CODE
    for x in [${sep="," input_array}]:
      print(x)
    for x in [${sep="," elements_to_add}]:
      print(x)
    CODE
  }
  output {
    Array[Int] new_array = read_lines(stdout())
  }
}

workflow w {
  call append_array { input:
    input_array=[0,1,2],
    elements_to_add=[3,4,5]
  }
}