字典根据Key排序

value_dict = {"value24":"0.26",
              "value65":"0.24",
              "value89":"4.25",
              "value12":"1.25",
              "value1":"0.25",
              "value67":"2.45",
              "value2":"0.65",
              "value556":"9.25",
              "value1234":"0.15",
              "value123":"0.95",
              "value21":"0.25",
              "value89":"0.28",
              "value2":"0.29",
              "value6":"0.75"}

print sorted(value_dict, key=lambda x:int(x[5:])+1)
print sorted(value_dict.items(), key=lambda key:int(key[0][5:]))