print("range(1,10):",list(range(1,10)))
print("x*x for x in range(10):",[x*x for x in range(10)])
import os
print("direct or file:",[d for d in os.listdir('.')])//打印文件
print("x*x for x in range(10):",[x*x for x in range(10)])
import os
print("direct or file:",[d for d in os.listdir('.')])//打印文件