Python如何批量生成和调用变量

for i in range(3):
  locals() ['x' + str(i)] = i

for j in range(3):
  a = locals() ['x' + str(j)]
  print(a)
print(x0)

0
1
2
0

class test(object):
  def __init__(self):
    for i in range(3):
      locals() ['self.x' + str(i)] = i
  def run(self):
    for i in range(3):
      a = locals() ['self.x' + str(i)]
      print(a)

a = test()
a.run()

KeyError: 'self.x0'

class test(object):
  def __init__(self):
    self.d = {}
    for i in range(3):
      self.d['x' + str(i)] = i
  def run(self):
    for i in range(3):
      a = self.d['x' + str(i)]
      print(a)

asd = test()
asd.run()

d = {}

for i in range(3):
  d['x' + str(i)] = i
  
print(d.keys())
print(d['x0'])

for i in range(3):
  print(d['x' + str(i)])

dict_keys(['x0', 'x1', 'x2'])
0
0
1
2