Python根据字符串调用函数过程解析

# -*- encoding=utf-8 -*-
class Test:
  def __init__(self):
    self.name = '莉莉'
    self.age = 18
if __name__ == '__main__':
  test = Test()
  name = getattr(test, 'name') # 获取属性
  print(name)
  age = getattr(test, 'age') # 获取属性
  print(age)
  none = getattr(test, 'none', 'none') # 获取不存在的属性,需要添加 default，否则抛异常
  print(none)

# -*- encoding=utf-8 -*-
class Test:
  def __init__(self):
    self.name = '莉莉'
    self.age = 18

  def get_name(self):
    print('年龄是:{}'.format(self.name))
    return self.name
if __name__ == '__main__':
  test = Test()
  get_name = getattr(test, 'get_name') # 获取方法
  print(get_name)
  get_name() # 调用方法

# -*- encoding=utf-8 -*-
class Test:
  def __init__(self):
    self.name = '莉莉'
    self.age = 18
if __name__ == '__main__':
  test = Test()
  name = test.__dict__['name']
  print(name)