列表解析式在python中如何拼接列表

[some_operation(element) for element in sequence]

- returns list of elements.

# Python program to segregate positive and negative numbers in an array.

def segregate(arr):

  return [x for x in arr if x%2 == 0] + [x for x in arr if x%2 != 0]

if __name__ == '__main__':

  arr = [1, 8, 5, 3, 2, 6, 7, 10]

  arr = segregate(arr)

  print (arr)

  # prints [8, 2, 6, 10, 1, 5, 3, 7]