Validate Brazilian RG

rgvalidator.py

###
# Explain
# RG Number -> AB.CDE.FGH-V
# X=(Hx9)+(Gx8)+(Fx7)+(Ex6)+(Dx5)+(Cx4)+(Bx3)+(Ax2)+(100xV)
# Y= X%11
# If Y (rest of division) is 0 the RG is Valid

###
# Function to validate Brazilian "RG"
def isValidRG(number,dv):
    multiplicator=9
    acumulator=0
    for n in number[::-1]:
        acumulator+=int(n)*multiplicator
        multiplicator-=1
    if dv.lower() == "x":
        dv=10
    else:
        dv=int(dv)

    acumulator+=100*dv
    if (acumulator%11) == 0:
        return True
    return False

#### 
import sys

# Read RG from first argument
rg=sys.argv[1]
# Get RG number and remove dot if exists
rgNumber=rg.split('-')[0].replace('.','')
# Get a Validator Digit
rgDV=rg.split('-')[1]

# Return Valid or not valid RG number using isValidRG Function
if isValidRG(rgNumber,rgDV):
    print("RG Válido")
else:
    print("RG Invalido")