Python-based employment big data analysis in higher vocational colleges

In recent years, with the increase of graduates and the economic slowdown caused by the impact of the novel coronavirus pneumonia epidemic, the problem of difficult employment has attracted wide attention from all walks of life. Taking the employment data of graduates of a vocational college as an example, this paper displays the employment rate of graduates, employment industry, matching degree between employment unit and profession, salary level, geographical distribution and other information through data collection, data cleaning, data analysis and data visualization, so as to provide reference for students' career planning and employment choice. Finally, countermeasures and suggestions are put forward to help students better plan their career development, and job market data support for universities and government departments are also provided.