In [1]:

    

def my_round(val, digit=0):
    p = 10 ** digit
    return (val * p * 2 + 1) // 2 / p


    

In [2]:

    

my_round_int = lambda x: int((x * 2 + 1) // 2)


    

In [3]:

    

f = 123.456


    

In [4]:

    

print(int(my_round(f)))


    

    




123

In [5]:

    

print(my_round_int(f))


    

    




123

In [6]:

    

print(my_round(f, 1))


    

    




123.5

In [7]:

    

print(my_round(f, 2))


    

    




123.46

In [8]:

    

print(int(my_round(0.4)))
print(int(my_round(0.5)))
print(int(my_round(0.6)))


    

    




0
1
1

In [9]:

    

i = 99518


    

In [10]:

    

print(int(my_round(i, -1)))


    

    




99520

In [11]:

    

print(int(my_round(i, -2)))


    

    




99500

In [12]:

    

print(int(my_round(i, -3)))


    

    




100000

In [13]:

    

print(int(my_round(4, -1)))
print(int(my_round(5, -1)))
print(int(my_round(6, -1)))


    

    




0
10
10

In [14]:

    

print(int(my_round(-0.4)))
print(int(my_round(-0.5)))
print(int(my_round(-0.6)))


    

    




0
0
-1

In [15]:

    

import math


    

In [16]:

    

def my_round2(val, digit=0):
    p = 10 ** digit
    s = math.copysign(1, val)
    return (s * val * p * 2 + 1) // 2 / p * s


    

In [17]:

    

print(int(my_round2(-0.4)))
print(int(my_round2(-0.5)))
print(int(my_round2(-0.6)))


    

    




0
-1
-1