import math

print(math.ceil(2.54))      # 3
print(math.floor(2.54))     # 2

x = 2.34
print(x.__round__())    # 2

y = 2.54
print(y.__round__())    # 3

z = -3.54
print(z.__abs__())  # abs always return positive number
# 3.54

