代码:
print(format(2.34567, '.2f'))
print(format(2.34567, '.3f'))
print(format(2.34567, '.4f'))
2.35
2.346
2.3457
print(format(2.34567, '.2f'))
print(format(2.34567, '.3f'))
print(format(2.34567, '.4f'))
2.35
2.346
2.3457