我希望将list作为参数传递给sparksql语句。

process_date = '2020-01-01'

df1 = spark.sql("""select '{0}', * from table1""".format(process_date))

This works for a string. 
So df1 is created successfully.

But If I have List like this 

list1 = ['a','b','c']

df2 = spark.sql("""select '{0}','{1}',* from table1""".format(process_date,list1))

This is not working for me.