四捨五入

# Hello World program in Python
import sys
import math
print(sys.version);

def xround(v,p):
  return math.ceil(v*pow(10,p))/pow(10,p);


bb=2.605;  print(xround(bb,2),round(bb,2));
bb=2.615;  print(xround(bb,2),round(bb,2));
bb=2.625;  print(xround(bb,2),round(bb,2));
bb=2.635;  print(xround(bb,2),round(bb,2));
bb=2.645;  print(xround(bb,2),round(bb,2));
bb=2.655;  print(xround(bb,2),round(bb,2));
bb=2.665;  print(xround(bb,2),round(bb,2));
bb=2.675;  print(xround(bb,2),round(bb,2));
bb=2.685;  print(xround(bb,2),round(bb,2));
bb=2.695;  print(xround(bb,2),round(bb,2));
bb=3.605;  print(xround(bb,2),round(bb,2));
bb=3.615;  print(xround(bb,2),round(bb,2));
bb=3.625;  print(xround(bb,2),round(bb,2));
bb=3.635;  print(xround(bb,2),round(bb,2));
bb=3.645;  print(xround(bb,2),round(bb,2));
bb=3.655;  print(xround(bb,2),round(bb,2));
bb=3.665;  print(xround(bb,2),round(bb,2));
bb=3.675;  print(xround(bb,2),round(bb,2));
bb=3.685;  print(xround(bb,2),round(bb,2));
bb=3.695;  print(xround(bb,2),round(bb,2));