在Python中等距取出一个数组其中n个数的实现方式

import numpy as np
 
a = np.arange(0, 10)
b = np.arange(0, 15)
c = np.arange(0, 20)
d = np.arange(0, 30)
e = np.arange(10, 40)
f = np.arange(0, 100)
 
 
def pick_arange(arange, num):
 if num > len(arange):
  print("# num out of length, return arange:", end=" ")
  return arange
 else:
  output = np.array([], dtype=arange.dtype)
  seg = len(arange) / num
  for n in range(num):
   if int(seg * (n+1)) >= len(arange):
    output = np.append(output, arange[-1])
   else:
    output = np.append(output, arange[int(seg * n)])
  print("# return new arange:", end=' ')
  return output
 
 
print(pick_arange(a, 10))
print(pick_arange(a, 11))
print(pick_arange(b, 10))
print(pick_arange(c, 10))
print(pick_arange(d, 10))
print(pick_arange(e, 10))
print(pick_arange(f, 10))
print(pick_arange(f, 20))