GraphQL Clients 代码优化

小布什微笑地讲了一句很沉重的话 ：“我曾经听说，人最好趁年轻的时候就去世，当然，要越晚越好……”
I once heard it said of man that the idea is to die young as late as possible

如果把这句话，年迈的程序员用Python 语言翻译一下，就是：“写代码，要越年轻越好”
单位来了一位实习生，学习能力超强，写代码飞快，让我唏嘘不已，想起19岁就名校毕业的自己。
一个程序员如何带着尊严，幽默和善良而老去（ As he aged he taught us how to grow with dignity, humor and kindness）

好，言归正传，我们的经验可以代码更简洁更好复用

一、 GraphQL 创建mutation create语句 （动态表名和字段）

def mutation_create(table_name, str_sql, str_status):
    table_name_camelCase = table_name[0].lower() + table_name[1:]
    strmutation = """
        mutation{
          create%s(%s){
            status
            %s{
                %s
            }
          }
        }
        """ % (table_name, str_sql, table_name_camelCase, str_status)

    return strmutation

二、 GraphQL 批量导入数据

def import_from_api(api_url, table_name, *args):
    with urllib.request.urlopen(api_url) as url:
        data = json.loads(url.read().decode())
        for obj in data:
            str_sql = ""
            str_status = ""
            for arg in args:
                # key name must be camelCased
                argCamel = camel(arg)
                str_sql += "%s:\"%s\"," % (argCamel, obj[arg])
                str_status += argCamel + '\n'
            # create graphql sql
            strmutation = mutation_create(table_name, str_sql, str_status)
            # execute graphql
            mutation_result = mutation_graphql(strmutation)

三、 GraphQL 清空整表数据

def truncate_table(table_name):
    query_str = "all%ss" % table_name
    strquery = """
    {
      %s{
        id

      }
    }
            """ % query_str
    query_result = query_graphql(strquery)
    for data in query_result["data"][query_str]:
        data_id = int(data["id"])
        strmutation = mutation_delete_table(table_name, data_id)
        mutation_result = mutation_graphql(strmutation)