英文:
SnowFlake PythonSheet Error :Could not find handler function. Python worksheet must contain a handler function
问题
以下是翻译好的部分:
在SnowFlake Python表中执行Python代码时,如果没有包含以下函数:
def main(session: snowpark.Session):
return fake('en_US','celltype',{})
如果我包含上述函数,代码将成功执行。
因此,有人可以解释以下函数的目的吗?
def main(session: snowpark.Session):
我猜我也需要一些关于 'handlers' 的理解。
完整的代码如下:
import snowflake.snowpark as snowpark
from faker import Faker
import wheel_loader
def fake(locale, provider, parameters):
wheel_loader.load('faker_biology-0.6.0-py3-none-any.whl')
from faker_biology.physiology import CellType
if type(parameters).__name__ == 'sqlNullWrapper':
parameters = {}
fake = Faker(locale=locale)
fake.add_provider(CellType)
return fake.format(formatter=provider, **parameters)
def main(session: snowpark.Session):
return fake('en_US', 'celltype', {})
请注意,代码中的函数 main
似乎是用于执行特定操作的入口点。
英文:
While executing Python code in SnowFlake Python sheet without the function
def main(session: snowpark.Session):
return fake('en_US','celltype',{})
If I include the above function the code executes successfully.
Therefore, can someone explain the purpose of the function
def main(session: snowpark.Session):
I guess I need some understanding on 'handlers' as well.
The full code is as follows:
import snowflake.snowpark as snowpark
from faker import Faker
import wheel_loader
def fake(locale,provider,parameters):
wheel_loader.load('faker_biology-0.6.0-py3-none-any.whl')
from faker_biology.physiology import CellType
if type(parameters).__name__=='sqlNullWrapper':
parameters = {}
fake = Faker(locale=locale)
fake.add_provider(CellType)
return fake.format(formatter=provider,**parameters)
def main(session: snowpark.Session):
return fake('en_US','celltype',{})
答案1
得分: 1
主函数是Python工作表的默认入口点。
在处理程序函数中编写Snowpark Python代码:
import snowflake.snowpark as snowpark def main(session: snowpark.Session): # 在这里编写您的代码
默认处理程序函数是
main
,但您可以在工作表的设置中更改它。使用在样板代码中提供的
session
对象,通过Snowpark API库访问Snowflake中的数据。例如,您可以为表创建一个DataFrame或执行SQL语句。
重要提示:截至发布此帖子时,处理函数的签名不允许更多参数:
def fake(session: snowpark.Session, locale, provider, parameters):
英文:
main is the default entry point for Python Worksheet.
> Writing Snowpark Code in Python Worksheets
>
> Write your Snowpark Python code inside the handler function:
>
>
> import snowflake.snowpark as snowpark
>
> def main(session: snowpark.Session):
> # your code goes here
>
> The default handler function is main
, but you can change it in the Settings for the worksheet.
>
> Use the session
object provided in the boilerplate code to access data in Snowflake with the Snowpark API libraries. For example, you can create a DataFrame for a table or execute a SQL statement
Important: signature of handling function (as a moment of writing this post) does not allow more arguments:
def fake(session: snowpark.Session, locale,provider,parameters):
通过集体智慧和协作来改善编程学习和解决问题的方式。致力于成为全球开发者共同参与的知识库,让每个人都能够通过互相帮助和分享经验来进步。
评论