Could you tell me a loop problem-CodePudding

Steps as above, please take a look at why only returned to the 2014 years of data, thank you.

CodePudding user response:

Merg=killing append (slic)
Change
Killing=killing append (slic)

CodePudding user response:

Quote: refer to 1st floor weixin_45903952 response:

Perfect solution,
But why is can't merg? Merg=killing append (slic) is not equivalent to the circulation the resulting DataFrame object is assigned to the merg? And killing=killing append (slic) where is the difference? Thanks for comment.