Convert Number to Words in Indian Currency Format in Python

def number_to_word(number):
    def get_word(n):
        words={ 0:"", 1:"One", 2:"Two", 3:"Three", 4:"Four", 5:"Five", 6:"Six", 7:"Seven", 8:"Eight", 9:"Nine", 10:"Ten", 11:"Eleven", 12:"Twelve", 13:"Thirteen", 14:"Fourteen", 15:"Fifteen", 16:"Sixteen", 17:"Seventeen", 18:"Eighteen", 19:"Nineteen", 20:"Twenty", 30:"Thirty", 40:"Forty", 50:"Fifty", 60:"Sixty", 70:"Seventy", 80:"Eighty", 90:"Ninty" }
        if n<=20:
            return words[n]
        else:
            ones=n%10
            tens=n-ones
            return words[tens]+" "+words[ones]
            
    def get_all_word(n):
        d=[100,10,100,100]
        v=["","Hundred And","Thousand","lakh"]
        w=[]
        for i,x in zip(d,v):
            t=get_word(n%i)
            if t!="":
                t+=" "+x
            w.append(t.rstrip(" "))
            n=n//i
        w.reverse()
        w=' '.join(w).strip()
        if w.endswith("And"):
            w=w[:-3]
        return w

    arr=str(number).split(".")
    number=int(arr[0])
    crore=number//10000000
    number=number%10000000
    word=""
    if crore>0:
        word+=get_all_word(crore)
        word+=" crore "
    word+=get_all_word(number).strip()+" Rupees"
    if len(arr)>1:
         if len(arr[1])==1:
            arr[1]+="0"
         word+=" and "+get_all_word(int(arr[1]))+" paisa"
    return word

print(number_to_word(12345))
print(number_to_word(123.45))
print(number_to_word(1234678910))