python i18n

• 现在pygal已经没有i18n模块，要改用pygal_maps_world.i18n(pycharm直接安装)

• import json
  from pygal_maps_world.i18n import COUNTRIES
  
  
  fileName = "population_data.json"
  with open(fileName) as f:
      pop_data = json.load(f) # json.load()将数据转化为python能够处理的格式，这里是一个列表
  
  for pop_dict in pop_data:
      if pop_dict['Year'] == '2010':
          country_name = pop_dict["Country Name"]
          population = int(float(pop_dict['Value']))
          print(country_name + ':' + str(population))
  
  
  def get_country_code(country_name):
      for code, name in COUNTRIES.items():
          if name == country_name:
              return code
      return None
  
  
  print(get_country_code('Andorra'))