spurs { Guard : Parker , Forward : Duncan }
f The {len(spurs)} players are: {spurs[ Guard ]} the guard, and {spurs[ Forward ]} the forward.
The 2 players are: Parker the guard, and Duncan the forward.
f Numbers from 1-10 are {[_ for _ in range(1, 11)]}
Numbers from 1-10 are [1, 2, 3, 4, 5, 6, 7, 8, 9, 10]
# 小数精度
PI 3.141592653
f Pi is {PI:.2f}
Pi is 3.14
